74LVC244APW datasheet(10/17 Pages) PHILIPS

tên linh kiện	74LVC244APW

Giải thích chi tiết về linh kiện	Octal buffer/line driver with 5 V tolerant inputs/outputs (3-state)

PDF	17 Pages

Scroll/Zoom	100%

nhà sản xuất	PHILIPS [NXP Semiconductors]

Trang chủ	http://www.nxp.com

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10 / 17 page

2003 Oct 30

Philips Semiconductors

Product speciﬁcation

Octal buffer/line driver with 5 V tolerant

inputs/outputs (3-state)

74LVC244A; 74LVCH244A

AC WAVEFORMS

handbook, halfpage

MNA171

nAn input

nYn output

tPLH

tPHL

GND

VOH

VOL

Fig.6 Input nAn to output nYn propagation delays.

VM = 1.5 V at VCC ≥ 2.7 V.

VM = 0.5VCC at VCC < 2.7 V.

VOL and VOH are typical output voltage drop that occur with the output load.

handbook, full pagewidth

MNA362

tPLZ

tPHZ

outputs

disabled

outputs

enabled

outputs

enabled

output

LOW-to-OFF

OFF-to-LOW

output

HIGH-to-OFF

OFF-to-HIGH

nOE input

VOL

VOH

VCC

GND

tPZL

tPZH

Fig.7 3-state enable and disable times.

VM = 1.5 V at VCC ≥ 2.7 V.

VM = 0.5VCC at VCC < 2.7 V.

VX =VOL + 0.3 V at VCC ≥ 2.7 V;

VX =VOL + 0.1VCC at VCC < 2.7 V.

VY =VOH + 0.3 V at VCC ≥ 2.7 V;

VY =VOH + 0.1VCC at VCC < 2.7 V.

VOL and VOH are typical output voltage drop that occur with the output load.

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