Document | DataSheet (1.56MB) |
The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non-inverting three-state buffers that differ only in that the 241 has one active-high and one active-low output enable, and the 244 has two active-low outpu.
• HC/HCT240 Inverting
• HC/HCT241 Non-inverting
• HC/HCT244 Non-inverting
• Typical propagation delay = 8ns at VCC = 5 V,
CL = 15 pF, TA = 25℃ for HC240
• Three-state outputs
• Buffered inputs
• High-current bus driver outputs
• Fanout (over temperature range)
– Standard outputs: 10 LSTTL loads
– Bus driver outputs: 15 LSTTL loads
• Wide operating temperature range:
–55℃ to 125℃
• Balanced propagation delay and transition times
• Significant power reduction compared to LSTTL Logic ICs
• HC types:
– 2 V to 6 V operation
– High noise immunity: NIL = 30%, NIH = 30% of
VCC at VCC = 5 V
• HCT types.
Distributor | Stock | Price | Buy |
---|
No. | Part # | Manufacture | Description | Datasheet |
---|---|---|---|---|
1 | 54HC240 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic | |
2 | 54HC240 |
Texas Instruments |
High-Speed CMOS Logic Octal Buffer/Line Drivers | |
3 | 54HC244 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic | |
4 | 54HC244 |
Texas Instruments |
Octal Buffers and Line Drivers | |
5 | 54HC245 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic | |
6 | 54HC245 |
Texas Instruments |
Octal Bus Transceivers | |
7 | 54HC245 |
Motorola Semiconductor |
OCTAL BUS TRANSCEIVER | |
8 | 54HC21 |
STMicroelectronics |
DUAL 4-INPUT AND GATE | |
9 | 54HC237 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic | |
10 | 54HC237 |
Texas Instruments |
High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer | |
11 | 54HC251 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic | |
12 | 54HC251 |
Texas Instruments |
Data Selectors/Multiplexers | |
13 | 54HC257 |
Texas Instruments |
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS | |
14 | 54HC257 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic | |
15 | 54HC259 |
STMicroelectronics |
Rad-hard high speed 2 to 6V CMOS logic |