SN74LS259D Motorola, SN74LS259D Datasheet

SN74LS259D

Manufacturer Part Number

SN74LS259D

Description

8-BIT ADDRESSABLE LATCH

Manufacturer

Motorola

Datasheet

1.SN74LS259D.pdf (6 pages)

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8-BIT ADDRESSABLE LATCH

general purpose storage applications in digital systems. It is a multifunctional

device capable of storing single line data in eight addressable latches, and

also a 1-of-8 decoder and demultiplexer with active HIGH outputs. The device

also incorporates an active LOW common Clear for resetting all latches, as

well as, an active LOW Enable.

NOTES:

a) 1 TTL Unit Load (U.L.) = 40 A HIGH/1.6 mA LOW.

b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial

GUARANTEED OPERATING RANGES

PIN NAMES

A 0 , A 1 , A 2

Q 0 to Q 7

V CC

T A

I OH

I OL

(74) Temperature Ranges.

The SN54/ 74LS259 is a high-speed 8-Bit Addressable Latch designed for

Serial-to-Parallel Conversion

Eight Bits of Storage With Output of Each Bit Available

Random (Addressable) Data Entry

Active High Demultiplexing or Decoding Capability

Easily Expandable

Common Clear

Symbol

Supply Voltage

Operating Ambient Temperature Range

Output Current — High

Output Current — Low

Address lnputs

Data Input

Enable (Active LOW) Input

Clear (Active LOW) input

Parallel Latch Outputs (Note b)

CONNECTION DIAGRAM DIP (TOP VIEW)

V CC

A o

A 1

A 2

Q 0

Parameter

Q 7

Q 1

Q 6

Q 2

FAST AND LS TTL DATA

Q 5

Q 3

0.5 U.L.

1.0 U.L.

0.5 U.L.

10 U.L.

HIGH

LOADING (Note a)

GND

Q 4

5-433

5 (2.5) U.L.

0.25 U.L.

LOW

0.5 U.L.

54, 74

4.75

– 55

Min

4.5

8-BIT ADDRESSABLE LATCH

SN54/74LS259

ORDERING INFORMATION

LOW POWER SCHOTTKY

SN54LSXXXJ

SN74LSXXXN

SN74LSXXXD

Typ

5.0

– 0.4

Max

5.25

125

5.5

4.0

8.0

Ceramic

Plastic

SOIC

CASE 751B-03

CASE 620-09

CASE 648-08

CERAMIC

N SUFFIX

D SUFFIX

J SUFFIX

PLASTIC

SOIC

Unit

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SN74LS259D Summary of contents

Page 1

ADDRESSABLE LATCH The SN54/ 74LS259 is a high-speed 8-Bit Addressable Latch designed for general purpose storage applications in digital systems multifunctional device capable of storing single line data in eight addressable latches, and also a 1-of-8 ...

Page 2

LOGIC DIAGRAM FUNCTIONAL DESCRIPTION The SN54 / 74LS259 has four modes of operation as shown in the mode selection table. In the addressable latch mode, ...

Page 3

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE Symbol Symbol Parameter Parameter V IH Input HIGH Voltage Input LOW Voltage Input LOW Voltage V IK Input Clamp Diode Voltage Output HIGH Voltage Output HIGH ...

Page 4

PHL t PLH Q OTHER CONDITIONS STABLE Figure 1. Turn-on and Turn-off Delays, Enable To Output and Enable Pulse Width A 1 1 ...

Page 5

G - 0.25 (0.010 - SEATING -T- PLANE 0.25 (0.010) ...

Page 6

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “ ...

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