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參數資料
| 型號： | HD74HCT640 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal Bus Transceivers (with 3-state outputs) |
| 中文描述： | 八路總線收發器（3態輸出） |
| 文件頁數： | 1/7頁 |
| 文件大小： | 52K |
| 代理商： | HD74HCT640 |
HD74HCT640/HD74HCT643
Octal Bus Transceivers (with 3-state outputs)
Description
Both the HD74HCT640 and the HD74HCT643 have one active low enable input (
G
), and a direction
control (DIR). When the DIR input is high, data flows from the A inputs to the B outputs. When DIR is
low, data flows from B to A.
The HD74HCT640 transfers inverted data from one bus to the other. The HD74HCT643 transfers inverted
data from the A bus to the B bus and non-inverted data from the B bus to the A bus.
Features
LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility
High Speed Operation: t
pd
(A to B) = 14.5 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: V
CC
= 4.5 to 5.5 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Function Table
Control Input
G
Operation
DIR
HD74HCT640
B
data to A bus
A
data to B bus
HD74HCT643
L
L
B data to A bus
A
data to B bus
L
H
H
X
Isolation
Isolation
相關PDF資料 |
PDF描述 |
|---|---|
| HD74HCT643 | Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-LCCC -55 to 125 |
| HD74HCT688 | Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-CDIP -55 to 125 |
| HD74HCT74A | Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-CDIP -55 to 125 |
| HD74HCU04A | Hex Inverters |
| HD74HCU04 | surface mount silicon Zener diodes |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HD74L | 制造商:Panasonic Industrial Company 功能描述:IC |
| HD74LS00FP | 制造商:Renesas Electronics 功能描述:74LS |
| HD74LS00P | 制造商:Panasonic Industrial Company 功能描述:IC 制造商:Hitachi 功能描述:Logic Circuit, Quad 2-Input NAND, LS-TTL, 14 Pin, Plastic, DIP |
| HD74LS00P-E | 制造商:Renesas Electronics Corporation 功能描述: |
| HD74LS01FP(EL-E) | 制造商:Renesas Electronics Corporation 功能描述: |
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