CY54FCT573T, CY74FCT573T

8-BIT LATCHES

WITH 3-STATE OUTPUTS

SCCS068 – OCTOBER 2001

1

POST OFFICE BOX 655303

and F Logic

of Equivalent FCT Functions

Significantly Improved Noise

Characteristics

Operation

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

Output Logic Levels

– 32-mA Output Sink Current

– 12-mA Output Source Current

– 64-mA Output Sink Current

– 32-mA Output Source Current

description

The ’FCT573T devices consist of eight latches with 3-state outputs for bus-organized applications. When the

latch-enable (LE) input is high, the flip-flops appear transparent to the data. Data that meets the required setup

times are latched when LE transitions from high to low. Data appears on the bus when the output-enable (OE)

input is low. When OE is high, the bus output is in the high-impedance state. In this mode, data can be entered

into the latches. The ’FCT573T devices are identical to the ’FCT373T devices, except for the flow-through

pinout of the ’FCT573T, which simplifies board design.

outputs, preventing damaging current backflow through the device when it is powered down.

Copyright

 2001, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

CY54FCT573T ...D PACKAGE

CY74FCT573T ...P, Q, OR SO PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

OE

GND

LE

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.