Nexperia

74LVC2T45; 74LVCH2T45

Dual supply translating transceiver; 3-state

6.2. Pin description

Table 3. Pin description

Symbol

Pin

Description

VCC(A)

1

supply voltage A (port A and DIR)

1A

2

data input or output

2A

3

data input or output

GND

4

ground (0 V)

DIR

5

direction control

2B

6

data input or output

1B

7

data input or output

VCC(B)

8

supply voltage B (port B)

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

nA

nB

1.2 V to 5.5 V

L

nA = nB

input

1.2 V to 5.5 V

H

input

nB = nA

GND [2]

X

Z

Z

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

[2] When either VCC(A) or VCC(B) is at GND level, the device goes into suspend mode.

74LVC_LVCH2T45

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Product data sheet

Rev. 12 — 1 March 2023

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