SEMICONDUCT OR

1

Features

• Common Latch Enable Control

• Common Three-State Output Enable Control

• Buffered Inputs

• Three-State Outputs

• Bus Line Driving Capacity

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

Description

The

Harris

CD74HC373,

CD74HCT373,

CD54HC573,

CD74HC573, and CD74HCT573 are high speed Octal Trans-

parent Latches manufactured with silicon gate CMOS technol-

ogy. They possess the low power consumption of standard

CMOS integrated circuits, as well as the ability to drive 15

LSTTL devices. The CD74HCT373 and CD74HCT573 are

functionally as well as pin compatible with the standard

74LS373 and 74LS573.

The outputs are transparent to the inputs when the latch

enable (LE) is high. When the latch enable (LE) goes low the

data is latched. The output enable (OE) controls the three-

state outputs. When the output enable (OE) is high the

outputs are in the high impedance state. The latch operation

is independent to the state of the output enable. The 373 and

573 are identical in function and differ only in their pinout

arrangements.

Ordering Information

PART NUMBER

TEMP. RANGE

PACKAGE

PKG.

NO.

CD54HC573F

-55 to 125

20 Ld CERDIP

F20.3

CD74HC373E

-55 to 125

20 Ld PDIP

F20.3

CD74HCT373E

-55 to 125

20 Ld PDIP

E20.3

CD74HC573E

-55 to 125

20 Ld PDIP

E20.3

CD74HCT573E

-55 to 125

20 Ld PDIP

E20.3

CD74HC373M

-55 to 125

20 Ld SOIC

M20.3

CD74HCT373M

-55 to 125

20 Ld SOIC

M20.3

CD74HC573M

-55 to 125

20 Ld SOIC

M20.3

CD74HCT573M

-55 to 125

20 Ld SOIC

M20.3

NOTES:

1. When ordering, use the entire part number. Add the suffix 96 to

obtain the variant in the tape and reel.

2. Wafer or die for this part number are available which meets all

electrical specifications. Please contact your local sales office or

Harris customer service for ordering information.

November 1997

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

CD74HC373, CD74HCT373,

CD54HC573, CD74HC573,

CD74HCT573

High Speed CMOS Logic

Octal Transparent Latch, Three-State Output

File Number

1679.1