TLF9547

August 1995

74F525

Programmable Counter

General Description

The ’F525 is a multi-function 28-pin device It consists of a

16-bit count-down counter logic to control the counter logic

to control the state of the outputs and a PLA to decode the

particular function selected by the user The list of high-

speed timing applications include

Features

Y

Baud rate generator

Y

Digitally programmed monostable

Y

Variable system frequency generator

Y

Digital filter variable sampling rate

Y

16-bit data path

Y

External trigger

Y

Extremely accurate one shot wpulse widths from

50 ns to 327 ms

Commercial

Package

Package Description

Number

74F525QC (Note 1)

V28A

28-Lead Molded Plastic Leaded Chip Carrier

74F525SC (Note 1)

M28B

28-Lead (0300 Wide) Molded Small Outline JEDEC

74F525PC

N28B

28-Lead (0600 Wide) Molded Dual-In-Line Package

Note 1

Devices also available in 13

Connection Diagrams

Pin Assignment

DIP and SOIC

TLF9547 – 2

Pin Assignment

for PCC

TLF9547 – 3

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A