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 output enables. All three types have identical pinouts. PART NUM.
• 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.
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers o.
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | 74HCT240 |
Philips |
Octal buffer/line driver | |
2 | 74HCT240 |
Texas Instruments |
High-Speed CMOS Logic Octal Buffer/Line Drivers | |
3 | 74HCT240 |
nexperia |
Octal buffer/line driver | |
4 | 74HCT240-Q100 |
nexperia |
Octal buffer/line driver | |
5 | 74HCT240D |
Toshiba |
Octal Bus Buffer | |
6 | 74HCT240D |
nexperia |
Octal buffer/line driver | |
7 | 74HCT241 |
Philips |
Octal buffer/line driver | |
8 | 74HCT241 |
nexperia |
Octal buffer/line driver | |
9 | 74HCT241 |
Texas Instruments |
High-Speed CMOS Logic Octal Buffer/Line Drivers | |
10 | 74HCT241D |
nexperia |
Octal buffer/line driver | |
11 | 74HCT242 |
Philips |
Quad bus transceiver | |
12 | 74HCT243 |
Philips |
Quad bus transceiver |