Hitachi HD74HCT242
The HD74HCT242 is an inverting buffer and the HD74HCT243 is a noninverting buffer. Each device has one active high enable (GBA), and one active low enable (GAB). The device does not have schmitt trigger inputs.| Part No. | HD74HCT242 |
|---|---|
| Datasheet | HD74HCT242 Download |
| Manufacturer |  Hitachi |
| Description | Quad. Bus Transceivers (with 3-state outputs) |
| Buy | Stock & Price |
DESCRIPTION
GBA enables the A outputs and GAB enables the B outputs. The device does not have schmitt trigger inputs.FEATURES
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● LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A to Y) = 9.5 ns typ (C L = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table HD74HCT242 Control Inputs GAB H L H L I O O Z : : : : GBA H H L L Input Output Inverting Output High Impedance Data Port Status A O Z Z I B I Z Z O HD74HCT243 Data Port Status A O Z Z I B I Z Z O HD74HCT242/HD74HCT243 Pin Arrangement GAB NC 1A 2A 3A 4A GND 1 2 3 4 5 6 7 14 VCC 13 GBA 12 NC 11 1B 10 2B 9 8 3B 4B (Top view) Block Diagram HD74HCT242 VCC A 1 of 4 Transceivers VCC B GBA GAB 2 HD74HCT242/HD74HCT243 HD74HCT243 VCC A 1 of 4 Transceivers VCC B GBA GAB
ABSOLUTE MAXIMUM RATINGS
Item Supply voltage range Input volt...
