5.3 Recommended Operating Conditions (continued)

See (1) (2) (3)

VCCI

VCCO

MIN

MAX

UNIT

VIL

Low-level

input voltage

DIR

(referenced to VCCA)(5)

1.65 to 1.95V

VCCA × 0.35

V

2.3 to 2.7V

0.7

3 to 3.6V

0.8

4.5 to 5.5V

VCCA × 0.3

VI

Input voltage

0

5.5

V

VO

Output voltage

0

VCCO

V

IOH

High-level output current

1.65 to 1.95V

–4

mA

2.3 to 2.7V

–8

3 to 3.6V

–24

4.5 to 5.5V

–32

IOL

Low-level output current

1.65 to 1.95V

4

mA

2.3 to 2.7V

8

3 to 3.6V

24

4.5 to 5.5V

32

Δt/Δv

Input transition

rise or fall rate

Data inputs

1.65 to 1.95V

20

ns/V

2.3 to 2.7V

20

3 to 3.6V

10

4.5 to 5.5V

5

Control inputs

1.65 to 5.5V

5

TA

Operating free-air temperature

–40

85

°C

(1)

VCCI is the VCC associated with the input port.

(2)

VCCO is the VCC associated with the output port.

(3)

All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. See the TI application report,

Implications of Slow or Floating CMOS Inputs, SCBA004.

(4)

For VCCI values not specified in the data sheet, VIH min = VCCI × 0.7V, VIL max = VCCI × 0.3V.

(5)

For VCCI values not specified in the data sheet, VIH min = VCCA × 0.7V, VIL max = VCCA × 0.3V.

5.4 Thermal Information

THERMAL METRIC(1)

SN74LVC1T45

UNIT

DBV

(SOT-23)

DCK

(SC70)

DPK

(USON)

DRL

(SOT)

YZP

(DSBGA)

6 PINS

RθJA

Junction-to-ambient thermal resistance

215.1

210.9

278.3

223.7

131.0

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

136.5

139.2

133.4

88.7

1.3

°C/W

RθJB

Junction-to-board thermal resistance

96.6

72

174.1

58.4

22.6

°C/W

ψJT

Junction-to-top characterization parameter

71.5

54.9

23.4

5.9

5.2

°C/W

ψJB

Junction-to-board characterization parameter

96.3

71.7

173.5

58.1

22.6

°C/W

(1)

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

report.

www.ti.com

SN74LVC1T45

SCES515N – DECEMBER 2003 – REVISED JUNE 2024

Copyright © 2024 Texas Instruments Incorporated

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