74LS259 8-Bit Addressable Latch

The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS259 8-bit addressable latch is designed for general-purpose storage applications in digital systems. Specific uses include working registers, serial-holding registers, and active-high decoders or demultiplexers

74LS259 Features

• 8-bit Parallel Out Storage Register Performs Serial to Parallel Conversion
• Asynchronous Parallel Clear
• Active High Decoder
• Enable/Disable Input Simplifies Expansion
• Standard TTL Switching Voltages

74LS259 Specifications

Supply Voltage	4.75 – 5.25Vdc
Maximum Clock Frequency	40Mhz
Power Dissipation	2mW/gate @100kHz
Minimum Output Current	8mA
Propagation Delay	10nS
Fan Out (TTL Loads)	20

74LS259 Pinout Diagram

74LS259 Pin Description

Pin No	Pin Name	Description
1	A0	Address input
2	A1	Address input
3	A2	Address input
4	Q0	Parallel Latch Output
5	Q1	Parallel Latch Output
6	Q2	Parallel Latch Output
7	Q3	Parallel Latch Output
8	GND	Ground
9	Q4	Parallel Latch Output
10	Q5	Parallel Latch Output
11	Q6	Parallel Latch Output
12	Q7	Parallel Latch Output
13	D	Data Pin
14	E’	Enable Pin(Active Low)
15	C’	Clear Pin(Active Low)
16	VCC	Positive Supply

Applications

• Working registers
• Serial-holding registers
• Active-high decoders or demultiplexers.

74LS259 Alternative Equivalent

Download 74LS259 8-Bit Addressable Latch Datasheet from the link given below.