74LVC244APW Ver la hoja de datos (PDF) - NXP Semiconductors.

Número de pieza

componentes Descripción

fabricante

74LVC244APW

Octal buffer/line driver with 5-volt tolerant inputs/outputs 3-Statetitle

NXP Semiconductors. 

NXP Semiconductors

74LVC244A; 74LVCH244A

Octal buffer/line driver; 3-state

5. Pinning information

5.1 Pinning

1OE 1

1A0 2

2Y0 3

1A1 4

2Y1 5

1A2 6

2Y2 7

1A3 8

2Y3 9

GND 10

74LVC244A

74LVCH244A

20 VCC

19 2OE

18 1Y0

17 2A0

16 1Y1

15 2A1

14 1Y2

13 2A2

12 1Y3

11 2A3

001aad113

Fig 4. Pin configuration for SO20 and (T)SSOP20

terminal 1

index area

74LVC244A

74LVCH244A

1A0 2

2Y0 3

1A1 4

2Y1 5

1A2 6

2Y2 7

1A3 8

2Y3 9

GND (1)

19 2OE

18 1Y0

17 2A0

16 1Y1

15 2A1

14 1Y2

13 2A2

12 1Y3

001aad 114

Transparent top view

(1) This is not a supply pin. The substrate is attached to this

pad using conductive die attach material. There is no

electrical or mechanical requirement to solder this pad.

However, if it is soldered, the solder land should remain

floating or be connected to GND.

Fig 5. Pin configuration for DHVQFN20 and

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

74LVC_LVCH244A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 8 — 26 June 2013

© NXP B.V. 2013. All rights reserved.

4 of 19

Share Link: