Logic ICs

Logic - Buffers, Drivers, Receivers, Transceivers (10,185)
Logic - Comparators (262)
Logic - Counters, Dividers (1,801)
Logic - FIFOs Memory (3,360)
Logic - Flip Flops (4,522)
Logic - Gates and Inverters (9,389)
Logic - Gates and Inverters - Multi-Function, Configurable (1,030)
Logic - Latches (2,228)
Logic - Multivibrators (486)
Logic - Parity Generators and Checkers (127)
Logic - Shift Registers (1,477)
Logic - Signal Switches, Multiplexers, Decoders (5,655)
Logic - Specialty Logic (1,366)
Logic - Translators, Level Shifters (2,245)
Logic - Universal Bus Functions (587)

Records 44,720

Page 714/1491

Part Number	Description	In Stock
74HC04D,652 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SO Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock21,228
74HC04D,653 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SO Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock152,916
74HC04D/AUJ NXP	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SO Manufacturer: NXP USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock5,958
74HC04DB,112 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SSOP Package / Case: 14-SSOP (0.209", 5.30mm Width)	In Stock3,132
74HC04DB,118 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SSOP Package / Case: 14-SSOP (0.209", 5.30mm Width)	In Stock2,461
74HC04DB-Q100J Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SSOP Package / Case: 14-SSOP (0.209", 5.30mm Width)	In Stock8,316
74HC04D-Q100,118 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SO Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock3,420
74HC04DR2G ON Semiconductor	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SOIC Manufacturer: ON Semiconductor Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -55°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SOIC Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock8,298
74HC04DTR2G ON Semiconductor	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: ON Semiconductor Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -55°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock5,238
74HC04N,652 NXP	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14DIP Manufacturer: NXP USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Through Hole Supplier Device Package: 14-DIP Package / Case: 14-DIP (0.300", 7.62mm)	In Stock8,820
74HC04PW,112 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock18,312
74HC04PW,118 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock52,104
74HC04PW/AUJ NXP	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: NXP USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock3,474
74HC04PW-Q100,118 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 14ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock5,958
74HC04S14-13 Diodes Incorporated	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SO Manufacturer: Diodes Incorporated Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 20µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock3,114
74HC04T14-13 Diodes Incorporated	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Diodes Incorporated Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 20µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock2,412
74HC05BQ,115 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14DHVQFN Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-DHVQFN (2.5x3) Package / Case: 14-VFQFN Exposed Pad	In Stock5,958
74HC05BQ-Q100,115 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14DHVQFN Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-DHVQFN (2.5x3) Package / Case: 14-VFQFN Exposed Pad	In Stock27,096
74HC05D Toshiba Semiconductor and Storage	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14SOIC Manufacturer: Toshiba Semiconductor and Storage Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 1µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SOIC Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock24,252
74HC05D,112 Nexperia	Logic - Gates and Inverters IC INVERTER OD 6CH 6-INP 14SO Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock8,856
74HC05D,118 Nexperia	Logic - Gates and Inverters IC INVERTER OD 6CH 6-INP 14SO Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock6,048
74HC05D-Q100,118 Nexperia	Logic - Gates and Inverters IC INVERTER OD 6CH 6-INP 14SO Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock3,418
74HC05PW,112 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock6,138
74HC05PW,118 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock8,730
74HC05PW-Q100,118 Nexperia	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock3,420
74HC05S14-13 Diodes Incorporated	Logic - Gates and Inverters IC INVERTER OD 6CH 6-INP 14SO Manufacturer: Diodes Incorporated Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 20µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 14-SO Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock2,304
74HC05T14-13 Diodes Incorporated	Logic - Gates and Inverters IC INVERTER 6CH 6-INP 14TSSOP Manufacturer: Diodes Incorporated Series: 74HC Logic Type: Inverter Number of Circuits: 6 Number of Inputs: 6 Features: Open Drain Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 20µA Current - Output High, Low: -, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 14-TSSOP Package / Case: 14-TSSOP (0.173", 4.40mm Width)	In Stock3,330
74HC08BQ,115 Nexperia	Logic - Gates and Inverters IC GATE AND 4CH 2-INP 14DHVQFN Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: AND Gate Number of Circuits: 4 Number of Inputs: 2 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-DHVQFN (2.5x3) Package / Case: 14-VFQFN Exposed Pad	In Stock114,522
74HC08BQ-Q100,115 Nexperia	Logic - Gates and Inverters IC GATE AND 4CH 2-INP 14DHVQFN Manufacturer: Nexperia USA Inc. Series: 74HC Logic Type: AND Gate Number of Circuits: 4 Number of Inputs: 2 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 2µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 15ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-DHVQFN (2.5x3) Package / Case: 14-VFQFN Exposed Pad	In Stock2,322
74HC08D Toshiba Semiconductor and Storage	Logic - Gates and Inverters IC GATE AND 4CH 2-INP 14SOIC Manufacturer: Toshiba Semiconductor and Storage Series: 74HC Logic Type: AND Gate Number of Circuits: 4 Number of Inputs: 2 Features: - Voltage - Supply: 2V ~ 6V Current - Quiescent (Max): 1µA Current - Output High, Low: 5.2mA, 5.2mA Logic Level - Low: 0.5V ~ 1.8V Logic Level - High: 1.5V ~ 4.2V Max Propagation Delay @ V, Max CL: 13ns @ 6V, 50pF Operating Temperature: -40°C ~ 125°C Mounting Type: Surface Mount Supplier Device Package: 14-SOIC Package / Case: 14-SOIC (0.154", 3.90mm Width)	In Stock5,886

«
‹
1
...
711
712
713
714 (current)
715
716
717
...
1491
›
»

Send Message

Certifications

Logic ICs

Resources

Support

Social Media

Need Help?
Send Message