2B

2A

1B

1A

4

5

3

GND

2Y

1Y

7

6

2

1

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

SN55451B, SN55452B, SN55453B, SN55454B

SN75451B, SN75452B, SN75453B, SN75454B

SLRS021C – DECEMBER 1967 – REVISED MAY 2016

SN5545xB, SN7545xB Dual-Peripheral Drivers for High-Current, High-Speed Switching

1

1 Features

1

•

Characterized for Use to 300 mA

•

High-Voltage Outputs up to 30 V

•

No Output Latch-Up at 20 V (After Conducting

300 mA)

•

High-Speed Switching

•

Open-Collector Outputs

•

Circuit Flexibility for Varied Applications

•

TTL-Compatible Diode-Clamped Inputs

•

Standard Supply Voltages

2 Applications

•

High-Speed Logic Buffers

•

Power Drivers

•

Lamp Drivers

•

LED Drivers

•

Line Drivers

•

Memory Drivers

3 Description

The SN5545xB and SN7545xB devices are dual-

peripheral drivers designed for use in systems that

employ

TTL

logic.

This

family

is

functionally

interchangeable with and replaces the SN75450

family

and

the

SN75450A

family

devices

manufactured previously. The speed of the devices is

equal to that of the SN75450 family, and the parts are

designed to ensure freedom from latch-up. Diode-

clamped inputs simplify circuit design.

The

SNx5451B,

SNx5452B,

SNx5453B,

and

SNx5454B devices are dual peripheral AND, NAND,

OR,

and

NOR

drivers,

respectively

(assuming

positive logic), with the output of the logic gates

internally connected to the bases of the npn output

transistors.

The

SN5545xB

drivers

are

characterized

for

operation over the full military range of –55°C to

125°C. The SN7545xB drivers are characterized for

operation from 0°C to 70°C.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SN7545xBP

PDIP (8)

9.81 mm × 6.35 mm

SN7545xBD

SOIC (8)

4.90 mm × 3.90 mm

SN7545xBPS

SO (8)

6.20 mm x 5.30 mm

SN5545xBJG

CDIP (8)

9.60 mm × 6.67 mm

SN5545xBFK

LCCC (20)

8.89 mm × 8.89 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

SN75451B Logic Diagram