74AVCH2T45DCTTE4 datasheet(7/31 Pages) TI1

номер детали	74AVCH2T45DCTTE4

подробное описание детали	2-Supply, Bus Transceiver with Configurable Level-Shifting

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SN74AVCH2T45

www.ti.com

SCES582H – JULY 2004 – REVISED APRIL 2015

7.4 Thermal Information

SN74AVCH2T45

THERMAL METRIC(1)

DCT (SSOP)

DCU (VSSOP)

YZP (DSBGA)

UNIT

8 PINS

RθJA

Junction-to-ambient thermal resistance

194.4

199.3

105.8

RθJC(top)

Junction-to-case (top) thermal resistance

124.7

76.2

1.6

RθJB

Junction-to-board thermal resistance

106.8

80.6

10.8

°C/W

ψJT

Junction-to-top characterization parameter

49.8

7.1

3.1

ψJB

Junction-to-board characterization parameter

105.8

80.1

10.8

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

7.5 Electrical Characteristics

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

(1) (2)

TA = 25°C

–40°C to 85°C

PARAMETER

TEST CONDITIONS

VCCA

VCCB

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

IOH = –100 μA

1.2 V to 3.6 V

VCCO – 0.2

IOH = –3 mA

1.2 V

0.95

IOH = –6 mA

1.4 V

1.05

VOH

(3)

VI = VIH

V

IOH = –8 mA

1.65 V

1.2

IOH = –9 mA

2.3 V

1.75

IOH = –12 mA

3 V

2.3

IOL = 100 μA

1.2 V to 3.6 V

0.2

IOL = 3 mA

1.2 V

0.15

IOL = 6 mA

1.4 V

0.35

VOL

(3)

VI = VIL

V

IOL = 8 mA

1.65 V

0.45

IOL = 9 mA

2.3 V

0.55

IOL = 12 mA

3 V

0.7

II

(3)

DIR input

VI = VCCA or GND

1.2 V to 3.6 V

±0.025

±0.25

±1

μA

VI = 0.42 V

1.2 V

25

VI = 0.49 V

1.4 V

15

IBHL

(4)

VI = 0.58 V

1.65 V

25

μA

VI = 0.7 V

2.3 V

45

VI = 0.8 V

3.3 V

100

VI = 0.78 V

1.2 V

–25

VI = 0.91 V

1.4 V

–15

IBHH

(5)

VI = 1.07 V

1.65 V

–25

μA

VI = 1.6 V

2.3 V

–45

VI = 2 V

3.3 V

–100

1.2 V

50

1.6 V

125

IBHLO

(6)

VI = 0 to VCC

1.95 V

200

μA

2.7 V

300

3.6 V

500

(1)

VCCO is the voltage associated with the output port supply VCCA or VCCB.

(2)

VCCI is the voltage associated with the input port supply VCCA or VCCB.

(3)

VOH: Output High Voltage; VOL: Output Low Voltage; II: Control Input Current.

(4)

The bus-hold circuit can sink at least the minimum low sustaining current at VIL maximum. IBHL should be measured after lowering VIN to

GND and then raising it to VIL maximum.

(5)

The bus-hold circuit can source at least the minimum high sustaining current at VIH mininum. IBHH should be measured after raising VIN

to VCC and then lowering it to VIH minimum.

(6)

An external driver must source at least IBHLO to switch this node from low to high.

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