74LS45 BCD to Decimal Decoders/Drivers IC – Datasheet

The 74LS45 is a Multipurpose Decoder designed to accept four BCD inputs and provide ten mutually exclusive outputs. It is a member of the 74XXYY IC series. The 74LS45 has built-in Schottky barrier diode to process for high speed. The 74LS45 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers.

What is a BCD to Decimal Decoder?

A BCD to Decimal Decoder consists of eight inverters and ten four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid BCD input logic ensures that all outputs remain OFF for all invalid binary input conditions. These decoders feature TTL inputs and high – performance NPN output transistors designed for use as indicator/relay drivers or as open – collector logic circuit drivers.

74LS45 Key Features & Specifications

• Function: Decoder, Demultiplexer
• Technology Family: LS
• VCC (Min): 4.75V
• VCC (Max): 5.25V
• No. of Channels: 1
• Voltage (Nom): 5V
• Configuration: 4:10
• Type: Standard
• IOL (Max): 8mA
• IOH (Max): -0.4mA
• Rating: Catalog
• Operating temperature range: 0°C to 70°C
• Bits (#): 10
• Digital input leakage (Max): 5uA
• ESD CDM: 0.75KV
• ESD HBM: 2KV

74LS45 Key Pinout

Pin Name	Pin No.	Description
Q0	1	Output Q0
Q1	2	Output Q1
Q2	3	Output Q2
Q3	4	Output Q3
Q4	5	Output Q4
Q5	6	Output Q5
Q6	7	Output Q6
GND	8	Ground
Q7	9	Output Q7
Q8	10	Output Q8
Q9	11	Output Q9
A3 (8)	12	Input D
A2 (4)	13	Input C
A1 (2)	14	Input B
A0 (1)	15	Input A
Vcc	16	Chip Supply Voltage

Applciations

The 74LS45 BCD to Decimal Decoder IC has a number of applications, a few are listed below:

• This performs DEMUX function in various devices such as RAM, ROM & various other memory storage devices

74LS45 Datasheet

You can download the 74LS45 BCD to Decimal Decoder IC Datasheet from the link given below:

See Also: 74LS08 Quadruple Two Input AND Gate IC |74LS32 Quad 2 – Input OR Logic Gate IC| 74LS25 Dual 4 – Input NOR Gate IC with Strobe