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MC74HCT373

Octal 3−State Noninverting Transparent Latch with LSTTL−Compatible Inputs

ON Semiconductor 

MC74HCT373A

Octal 3-State Noninverting

Transparent Latch with

LSTTL-Compatible Inputs

High–Performance Silicon–Gate CMOS

The MC74HCT373A may be used as a level converter for

interfacing TTL or NMOS outputs to High–Speed CMOS inputs.

The HCT373A is identical in pinout to the LS373.

The eight latches of the HCT373A are transparent D–type latches.

While the Latch Enable is high the Q outputs follow the Data Inputs.

When Latch Enable is taken low, data meeting the setup and hold

times becomes latched.

The Output Enable does not affect the state of the latch, but when

Output Enable is high, all outputs are forced to the high–impedance

state. Thus, data may be latched even when the outputs are not

enabled.

The HCT373A is identical in function to the HCT573A, which has

the input pins on the opposite side of the package from the output pins.

This device is similar in function to the HCT533A, which has

inverting outputs.

• Output Drive Capability: 15 LSTTL Loads

• TTL/NMOS–Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 µA

• In Compliance with the Requirements Defined by JEDEC Standard

No. 7A

• Chip Complexity: 196 FETs or 49 Equivalent Gates

http://onsemi.com

20

1

20

1

PDIP–20

N SUFFIX

CASE 738

SOIC WIDE–20

DW SUFFIX

CASE 751D

MARKING

DIAGRAMS

20

MC74HCT373AN

AWLYYWW

1

20

HCT373A

AWLYYWW

1 20

20

1

TSSOP–20

DT SUFFIX

CASE 948G

HCT

373A

ALYW

1

A = Assembly Location

WL = Wafer Lot

YY = Year

WW = Work Week

PIN ASSIGNMENT

ENABLE A 1

A1 2

YB4 3

A2 4

YB3 5

A3 6

YB2 7

A4 8

YB1 9

GND 10

20 VCC

19 ENABLE B

18 YA1

17 B4

16 YA2

15 B3

14 YA3

13 B2

12 YA4

11 B1

© Semiconductor Components Industries, LLC, 2000

March, 2000 – Rev. 8

ORDERING INFORMATION

Device

Package Shipping

MC74HCT373AN

PDIP–20 1440 / Box

MC74HCT373ADW SOIC–WIDE 38 / Rail

MC74HCT373ADWR2 SOIC–WIDE 1000 / Reel

MC74HCT373ADT

TSSOP–20 75 / Rail

MC74HCT373ADTR2 TSSOP–20 2500 / Reel

1

Publication Order Number:

MC74HCT373A/D

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