Nexperia

74LVC244A; 74LVCH244A

Octal buffer/line driver; 3-state

74LVC244A

aaa-032841

Transparent top view

GND(1)

1A0 2

terminal 1

index area

2Y0

1Y0

3

18

2Y2 7

1A3 8

2Y3 9

2OE

19

1Y2

14

1A1 4

2A0

17

2A2

13

2Y1 5

1A2 6

1Y1

16

2A1

15

1Y3

12

(1) This is not a ground pin. There is no electrical or mechanical requirement to solder the pad. In case soldered,

the solder land should remain floating or connected to GND.

Fig. 6. Pin configuration SOT8020-1 (DHXQFN20)

5.2. Pin description

Table 2. Pin description

Symbol

Pin

Description

1OE, 2OE

1, 19

output enable input (active low)

1A0, 1A1, 1A2, 1A3

2, 4, 6, 8

data input

2Y0, 2Y1, 2Y2, 2Y3

3, 5, 7, 9

data output

GND

10

ground (0 V)

2A0, 2A1, 2A2, 2A3

17, 15, 13, 11

data input

1Y0, 1Y1, 1Y2, 1Y3,

18, 16, 14, 12

data output

VCC

20

supply voltage

6. Functional description

Table 3. Function table

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

Control

Input

Output

nOE

nAn

nYn

L

L

L

L

H

H

H

X

Z

74LVC_LVCH244A

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Product data sheet

Rev. 12 — 16 September 2021

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