74LVC_LVCH8T245

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Product data sheet

Rev. 3 — 12 December 2011

4 of 28

Nexperia

74LVC8T245; 74LVCH8T245

8-bit dual supply translating transceiver; 3-state

5.2 Pin description

[1]

All GND pins must be connected to ground (0 V).

6.

Functional description

[1]

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

[2]

[3]

7.

Limiting values

Table 2.

Pin description

Symbol

Pin

Description

1

DIR

2

direction control

A1 to A8

3, 4, 5, 6, 7, 8, 9, 10

data input or output

GND[1]

11

ground (0 V)

GND[1]

12

ground (0 V)

GND[1]

13

ground (0 V)

B1 to B8

21, 20, 19, 18, 17, 16, 15, 14 data input or output

OE

22

output enable input (active LOW)

23

24

Table 3.

Function table[1]

Supply voltage

Input

Input/output[3]

OE[2]

DIR[2]

An[2]

Bn[2]

1.2 V to 5.5 V

L

L

An = Bn

input

1.2 V to 5.5 V

L

H

input

Bn = An

1.2 V to 5.5 V

H

X

Z

Z

GND[3]

XXZ

Z

Table 4.

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

supply voltage A

0.5

+6.5

V

supply voltage B

0.5

+6.5

V

input clamping current

50

-

mA

input voltage

[1]

0.5

+6.5

V

output clamping current

50

-

mA

output voltage

Active mode

[1][2][3]

0.5

V

Suspend or 3-state mode

[1]

0.5

+6.5

V

output current

[2] -

50

mA

supply current

-

100

mA