DM54LS169J/883 National Semiconductor, DM54LS169J/883 Datasheet

DM54LS169J/883

Manufacturer Part Number

DM54LS169J/883

Description

Manufacturer

National Semiconductor

Type

Binaryr

Datasheet

1.DM54LS169J883.pdf (8 pages)

Specifications of DM54LS169J/883

Technology

Bipolar

Number Of Elements

Number Of Bits

Logic Family

Logical Function

Counter

Operating Supply Voltage (typ)

Propagation Delay Time

44ns

Operating Temp Range

-55C to 125C

Operating Supply Voltage (min)

4.5V

Operating Supply Voltage (max)

5.5V

Operating Temperature Classification

Military

Mounting

Through Hole

Pin Count

Lead Free Status / RoHS Status

Not Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

DM54LS169J/883B

Quantity:

4 526

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C 1995 National Semiconductor Corporation

54LS169 DM54LS169A DM74LS169A

Synchronous 4-Bit Up Down Binary Counter

General Description

This synchronous presettable counter features an internal

carry look-ahead for cascading in high-speed counting ap-

plications Synchronous operation is provided by having all

flip-flops clocked simultaneously so that the outputs all

change at the same time when so instructed by the count-

enable inputs and internal gating This mode of operation

helps eliminate the output counting spikes that are normally

associated with asynchronous (ripple clock) counters A

buffered clock input triggers the four master-slave flip-flops

on the rising edge of the clock waveform

This counter is fully programmable that is the outputs may

each be preset either high or low The load input circuitry

allows loading with the carry-enable output of cascaded

counters As loading is synchronous setting up a low level

at the load input disables the counter and causes the out-

puts to agree with the data inputs after the next clock pulse

The carry look-ahead circuitry permits cascading counters

for n-bit synchronous applications without additional gating

Both count-enable inputs (P and T) must be low to count

The direction of the count is determined by the level of the

up down input When the input is high the counter counts

up when low it counts down Input T is fed forward to en-

able the carry outputs The carry output thus enabled will

produce a low-level output pulse with a duration approxi-

mately equal to the high portion of the Q

Connection Diagram

DM54LS169AJ DM54LS169AW DM74LS169AM or DM74LS169AN

Order Number 54LS169DMQB 54LS169FMQB 54LS169LMQB

TL F 6401

See NS Package Number E20A J16A M16A N16E or W16A

output when

Dual-In-Line Package

counting up and approximately equal to the low portion of

the Q

carry pulse can be used to enable successively cascaded

stages Transitions at the enable P or T inputs are allowed

regardless of the level of the clock input All inputs are diode

clamped to minimize transmission-line effects thereby sim-

plifying system design

This counter features a fully independent clock circuit

Changes at control inputs (enable P enable T load up

down) which modify the operating mode have no effect

until clocking occurs The function of the counter (whether

enabled disabled loading or counting) will be dictated

solely by the conditions meeting the stable setup and hold

times

Features

Fully

programming

Internal look-ahead for fast counting

Carry output for n-bit cascading

Fully independent clock circuit

Alternate

available

Office Distributor for specifications

output when counting down This low-level overflow

synchronous

Contact a National Semiconductor Sales

Military Aerospace

operation

TL F 6401– 1

device

for

RRD-B30M105 Printed in U S A

counting

(54LS169)

June 1989

and

Related parts for DM54LS169J/883

DM54LS169J/883 Summary of contents

Page 1

... Y programming Internal look-ahead for fast counting Y Carry output for n-bit cascading Y Fully independent clock circuit Y Alternate Military Aerospace Y available Contact a National Semiconductor Sales Office Distributor for specifications output when A Dual-In-Line Package June 1989 operation for counting and device (54LS169 6401– 1 ...

Page 2

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Operating Free Air Temperature Range DM54LS and 54LS DM74LS Storage Temperature Range Recommended Operating Conditions Symbol ...

Page 3

Switching Characteristics Symbol Parameter f Maximum Clock MAX Frequency t Propagation Delay Time PLH Low to High Level Output t Propagation Delay Time PHL High to Low Level Output t Propagation Delay Time PLH Low to High Level Output t ...

Page 4

Logic Diagram LS169A Binary Counter 6401– 2 ...

Page 5

Timing Diagram Typical Load Count and Inhibit Sequences LS169A Binary Counters 6401 – 3 ...

Page 6

Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS169DMQB or DM54LS169AJ Order Number 54LS169LMQB NS Package Number E20A NS Package Number J16A 6 ...

Page 7

Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Molded Package (M) 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS169AM NS Package Number M16A Order Number DM74LS169AN NS Package Number N16E 7 ...

Page 8

... Hong Kong Ltd 49) 0-180-530 85 86 13th Floor Straight Block a Ocean Centre 5 Canton Rd 49) 0-180-530 85 85 Tsimshatsui Kowloon a Tel ( 49) 0-180-532 78 32 Hong Kong a 49) 0-180-532 93 58 Tel (852) 2737-1600 a Tel ( 49) 0-180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 ...

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