SN74LS623N集成电路（IC）的缓冲器驱动器接收器收发器规格书PDF中文资料

SN74LS623N属于集成电路（IC）的缓冲器驱动器接收器收发器。由美国德州仪器公司制造生产的SN74LS623N缓冲器，驱动器，接收器，收发器逻辑缓冲器、驱动器、接收器和收发器允许隔离对某个电路的逻辑信号的访问，以用于另一电路。缓冲器将其输入信号（不变或反相）传递到其输出，并可能用于清除弱信号或驱动负载。在布尔逻辑仿真器中，缓冲器主要用于增加传播延迟。逻辑接收器和收发器允许在数据总线之间进行隔离通信。

Bidirectional Bus Transceivers in

High-Density 20-Pin Packages

Local Bus-Latch Capability

Hysteresis at Bus Inputs Improves

Noise Margins

Choice of True or inverting Logic

Choice of 3-State or Open-Collector

Outputs

DEVICE ouTPuT LoGic

'LS620 3-Stata Inverting

‘L621 Open-Collector True

‘Ls623 3State Tre

description

These octal bus transceivers are designed for asyn-

chronous two-way communication between data

buses. The control function implementation allows

for maximum flexibility in timing.

These devices allow data transmission from the A bus

10 the B bus or from the B bus to the A bus depend-

ing 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 effectively isolated.

The dual-enable configuration gives the 'LS620,

'L§621, and 'L$623 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 thair last states. The 8-bit codes appearing

on the two sets of buses will be identical for the

'L§621 and 'LS623 davices or complementary for the

‘LS620.