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參數資料
| 型號： | HD74HCT620 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal Bus Transceivers (with inverted 3-state outputs)/ |
| 中文描述： | 八路總線收發器（帶倒三態輸出）/ |
| 文件頁數： | 1/9頁 |
| 文件大小： | 58K |
| 代理商： | HD74HCT620 |
HD74HCT620/HD74HCT623
Octal Bus Transceivers (with inverted 3-state outputs)/
Octal Bus Transceivers (with 3-state outputs)
Description
This octal transceiver is designed for asynchronous two-way communication between data buses. The
control function implementation allows for maximum flexibility in timng.
This device allows data transmission from A bus to the B bus or from the B bus to the A bus depending
upon the logic levels at the enable inputs (
GBA
and GAB).
The enable inputs can be used to disable the device so that the buses are affectively isolated.
The dual-enable configuration gives these devices the capability to store data by simultaneous enabling of
GBA
and GAB. Each output reinforces its input in this transceiver configuration. Thus, when both control
inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, both sets of
bus lines (16 in all) will remain at their last states. The 8-bit codes appearing on the two sets of buses will
be identical for the HD74HCT623 or complementary for the HD74HCT620.
Features
LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility
High Speed Operation: t
pd
(Bus to Bus) = 15 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)
相關PDF資料 |
PDF描述 |
|---|---|
| HD74HCT623 | Octal Bus Transceivers (with inverted 3-state outputs)/ |
| HD74HCT640 | Octal Bus Transceivers (with 3-state outputs) |
| 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 |
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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