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SN55451B, SN55452B, SN55453B, SN55454B

SN75451B, SN75452B, SN75453B, SN75454B

SLRS021C – DECEMBER 1967 – REVISED MAY 2016

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Product Folder Links: SN55451B SN55452B SN55453B SN55454B SN75451B SN75452B SN75453B SN75454B

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Copyright © 1967–2016, Texas Instruments Incorporated

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

Voltage values are with respect to network GND, unless otherwise specified.

(3)

This is the voltage between two emitters of a multiple-emitter transistor.

(4)

This value applies when the base-emitter resistance (RBE) is equal to or less than 500

Ω.

(5)

Both halves of these dual circuits may conduct rated current simultaneously; however, power dissipation averaged over a short time

interval must fall within the continuous dissipation rating.

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1)

MIN

MAX

UNIT

7

V

Input voltage

5.5

V

5.5

V

Off-state output voltage

30

V

400

mA

Peak collector or output current, II (tw

500

mA

Continuous total power dissipation

See Dissipation

Ratings

Operating free-air temperature

SN5545xB

–55

125

°C

SN7545xB

0

70

Case temperature for 60 seconds

SN5545xB FK package

260

°C

Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds

SN5545xB JG package

100

°C

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

SN7545xB D or P package

260

°C

Operating virtual junction temperature

150

°C

Storage temperature

–65

150

°C

7.2 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN

NOM

MAX

UNIT

Supply voltage

SN5545xB

4.5

5

5.5

V

SN7545xB

4.75

5

5.25

High-level input voltage

2

V

Low-level input voltage

0.8

V

Operating free-air temperature

SN5545xB

–50

125

°C

SN7545xB

0

70

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

7.3 Thermal Information

SN7545xB

UNIT

D (SOIC)

P (PDIP)

PS (SO)

8 PINS

8 PINS

8 PINS

Junction-to-ambient thermal resistance

122.2

63.7

119.6

°C/W

68.4

53.6

71.5

°C/W

Junction-to-board thermal resistance

62.4

40.8

68.7

°C/W

Junction-to-top characterization parameter

23.2

31.1

31.6

°C/W

Junction-to-board characterization parameter

62.0

40.8

67.7

°C/W