74ACT11593

8BIT BINARY COUNTER

WITH PARALLELINPUT REGISTERS AND 3STATE OUTPUTS

SCAS203 − JUNE 1992 − REVISED APRIL 1993

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Copyright

2−1

Counter/3-State Outputs

Clear

PCB Layout

Minimize High-Speed Switching Noise

CMOS) 1-

µm Process

Small-Outline Packages and Standard

Plastic 300-mil DIPs

description

The 74ACT11593 contains eight multiplexed parallel I/Os with 3-state output capability and an 8-bit storage

register that feeds an 8-bit binary counter. Both the register and the counter have individual positive-edge

triggered clocks.

The function tables show the operation of the counter clock-enable (CCKEN, CCKEN) and output-enable

(OE, OE) inputs.

The counter input has direct load and clear functions. A low-going RCO pulse is obtained when the counter

reaches the hex word FF.

Expansion is easily accomplished for two stages by connecting RCO of the first stage to CCKEN of the second

stage. Cascading for larger count chains is accomplished by connecting RCO of each stage to CCK of the

following stage.

The 74ACT11593 is characterized for operation from − 40

°C to 85°C.

Function Tables

COUNTER CLOCK ENABLE

OUTPUT ENABLE

INPUTS

OUTPUTS

A/Q

THRU H/Q

INPUTS

OUTPUTS

A/Q

THRU H/Q

CCKEN

CCKEN

OUTPUTS

A/QA THRU H/QH

OE

OE

OUTPUTS

A/QA THRU H/QH

L

L

Disable

L

L

Input mode

L

H

Disable

L

H

Input mode

H

L

Enable

H

L

Output mode

H

H

Disable

H

H

Input mode

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.

EPIC is a trademark of Texas Instruments Incorporated.

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GND

GND

GND

GND

CCK

CCLR

CCKEN

CCKEN

CLOAD

OE

OE

RCK

RCK

RCO

DW OR NT PACKAGE

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