Nexperia

74AVCH2T45

Dual-bit, dual-supply voltage level translator/transceiver; 3-state

7. Functional description

Table 4. Function table

H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.

Supply voltage

Input

Input/output[1]

VCC(A), VCC(B)

DIR[2]

nA

nB

0.8 V to 3.6 V

L

nA = nB

input

0.8 V to 3.6 V

H

input

nB = nA

GND[3]

X

Z

Z

[1] The input circuit of the data I/O is always active.

[2] The DIR input circuit is referenced to VCC(A).

[3] If at least one of VCC(A) or VCC(B) is at GND level, the device goes into suspend mode.

8. Limiting values

Table 5. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol Parameter

Conditions

Min

Max

Unit

VCC(A) supply voltage A

-0.5

+4.6

V

VCC(B) supply voltage B

-0.5

+4.6

V

IIK

input clamping current

VI < 0 V

-50

-

mA

VI

input voltage

[1]

-0.5

+4.6

V

IOK

output clamping current

VO < 0 V

-50

-

mA

Active mode

[1][2][3]

-0.5

VCCO + 0.5 V

VO

output voltage

Suspend or 3-state mode

[1]

-0.5

+4.6

V

IO

output current

VO = 0 V to VCCO

-

±50

mA

ICC

supply current

ICC(A) or ICC(B)

-

100

mA

IGND

ground current

-100

-

mA

Tstg

storage temperature

-65

+150

°C

Ptot

total power dissipation

Tamb = -40 °C to +125 °C

[4]

-

250

mW

[1] The minimum input voltage rating and output voltage ratings may be exceeded if the input and output current ratings are observed.

[2] VCCO is the supply voltage associated with the output port.

[3] VCCO + 0.5 V should not exceed 4.6 V.

[4] For SOT765-1 (VSSOP8) package: Ptot derates linearly with 4.9 mW/K above 99 °C.

For SOT833-1 (XSON8) package: Ptot derates linearly with 3.1 mW/K above 68 °C.

For SOT1089 (XSON8) package: Ptot derates linearly with 4.0 mW/K above 88 °C.

For SOT1116 (XSON8) package: Ptot derates linearly with 4.2 mW/K above 90 °C.

For SOT1203 (XSON8) package: Ptot derates linearly with 3.6 mW/K above 81 °C.

74AVCH2T45

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Product data sheet

Rev. 8 — 7 December 2022

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