The HD74HCT238 has 3 binary select inputs (A, B, and C). If the device is enabled these inputs determined which one of the eight normally high outputs will go low. Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders. Features • • • • • • LSTTL Output Logic Level Compatibility as well as CMOS Output Com.
•
•
•
•
•
• LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A, B, C to Y) = 18.5 ns typ (CL = 50 pF) High Output Current: Fanout of 10 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)
HD74HCT238
Function Table
Inputs Enable G1 X X L H H H H H H H H G2A X H X L L L L L L L L G2B H X X L L L L L L L L Select C X X X L L L L H H H H B X X X L L H H L L H H A X X X L H L H L H L H Outputs Y0 L L L H L L L L L L L Y1 L L L L H L L L L L L Y2 L L.
The HD74HCT238 has 3 binary select inputs (A, B, and C). If the device is enabled these inputs determined which one of t.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | HD74HCT237 |
Hitachi Semiconductor |
3-to-8-line Decoder/Demultiplexer with Address Latch | |
2 | HD74HCT240 |
Hitachi Semiconductor |
Octal Buffers/Line Drivers/Line Receivers(with inverted 3-state outputs) | |
3 | HD74HCT241 |
Hitachi Semiconductor |
Octal Buffers/Line Drivers/Line Receivers(with noninverted 3-state outputs) | |
4 | HD74HCT242 |
Hitachi Semiconductor |
Quad. Bus Transceivers (with 3-state outputs) | |
5 | HD74HCT243 |
Hitachi Semiconductor |
Quad. Bus Transceivers (with 3-state outputs) | |
6 | HD74HCT244 |
Hitachi Semiconductor |
Octal Buffers/Line Drivers/Line Receivers(noninverted 3-state outputs) | |
7 | HD74HCT245 |
Hitachi Semiconductor |
Octal Bus Transceivers (with 3-state outputs) | |
8 | HD74HCT00A |
Hitachi Semiconductor |
Quad. 2-input Positive NAND Gates | |
9 | HD74HCT04A |
Hitachi Semiconductor |
Hex Inverters | |
10 | HD74HCT08A |
Hitachi Semiconductor |
Quad. 2-input Positive AND Gates | |
11 | HD74HCT125 |
Hitachi Semiconductor |
Quad. Bus Buffer Gates (with 3-state outputs) | |
12 | HD74HCT126 |
Hitachi Semiconductor |
Quad. Bus Buffer Gates (with 3-state outputs) |