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SL74HC652N

Octal 3-State Bus Transceivers and D Flip-Flops High-Performance Silicon-Gate CMOS

System Logic Semiconductor 

SL74HC652

Octal 3-State Bus Transceivers and D Flip-Flops

High-Performance Silicon-Gate CMOS

The SL74HC652 is identical in pinout to the LS/ALS652. The device

inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

These devices consists of bus transceiver circuits, D-type flip-flop,

and control circuitry arranged for multiplex transmission of data

directly from the data bus or from the internal storage registers.

Direction and Output Enable are provided to select the read-time or

stored data function. Data on the A or B Data bus, or both, can be

stored in the internal D flip-flops by low-to-high transitions at the

appropriate clock pins (A-to-B Clock or B-to-A Clock) regardless of the

select or enable or enable control pins. When A-to-B Source and B-to-

A Source are in the real-time transfer mode, it is also possible to store

data without using the internal D-type flip-flops by simulta-neously

enabling Direction and Output Enable. In this configuration each

output reinforces its input. Thus, when all other data sources to the

two sets of bus lines are at high impedance, each set of bus lines will

remain at its last state.

The SL74HC652 has noninverted outputs.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA

• High Noise Immunity Characteristic of CMOS Devices

ORDERING INFORMATION

SL74HC652N Plastic

SL74HC652D SOIC

TA = -55° to 125° C for all packages

PIN ASSIGNMENT

LOGIC DIAGRAM

SLS

System Logic

Semiconductor

PIN 24=VCC

PIN 12 = GND

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