74AHCT257 datasheet(11/20 Pages) PHILIPS

部件名	74AHCT257

功能描述	Quad 2-input multiplexer; 3-state

Download	20 Pages

Scroll/Zoom	100%

制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

标志

11 / 20 page

2000 Apr 03

11

Philips Semiconductors

Product speciﬁcation

Quad 2-input multiplexer; 3-state

74AHC257;

74AHCT257

handbook, full pagewidth

MNA450

tPLZ

tPHZ

outputs

disabled

outputs

enabled

VOH − 0.3 V

VOL + 0.3 V

outputs

enabled

output

LOW-to-OFF

OFF-to-LOW

output

HIGH-to-OFF

OFF-to-HIGH

OE input

VI

VCC

VM

(1)

VOL

VOH

GND

tPZL

tPZH

VM

(2)

VM

(2)

Fig.7 3-state enable and disable times.

FAMILY

VI INPUT

REQUIREMENTS

VM(1)

INPUT

VM(2)

OUTPUT

AHC

GND to VCC

50% VCC 50% VCC

AHCT

GND to 3.0 V

1.5 V

50% VCC

Fig.7 3-state enable and disable times.

Fig.8 Load circuitry for switching times.

handbook, full pagewidth

open

GND

VCC

VI

VO

MNA219

D.U.T.

CL

RT

1000

Ω

PULSE

GENERATOR

S1

TEST

S1

tPLH/tPHL

open

tPLZ/tPZL

VCC

tPHZ/tPZH

GND

Definitions for test circuit.

CL = load capacitance including jig and probe capacitance (See Chapter “AC characteristics”).

RT = termination resistance should be equal to the output impedance Zo of the pulse generator.

类似零件编号 - 74AHCT257

制造商	部件名	数据表	功能描述
Nexperia B.V. All right...	74AHCT257	601Kb / 16P	Quad 2-input multiplexer; 3-state Rev. 02 - 9 May 2008
Nexperia B.V. All right...	74AHCT257-Q100	706Kb / 17P	Quad 2-input multiplexer; 3-state
NXP Semiconductors	74AHCT257D	99Kb / 16P	Quad 2-input multiplexer 3-state Rev. 02-9 May 2008
Nexperia B.V. All right...	74AHCT257D	601Kb / 16P	Quad 2-input multiplexer; 3-state Rev. 02 - 9 May 2008
Nexperia B.V. All right...	74AHCT257D-Q100	706Kb / 17P	Quad 2-input multiplexer; 3-state

More results

类似说明 - 74AHCT257

制造商	部件名	数据表	功能描述
NXP Semiconductors	74HC257	80Kb / 13P	Quad 2-input multiplexer 3-state 1998 Sep 30
Nexperia B.V. All right...	74AHCT257	601Kb / 16P	Quad 2-input multiplexer; 3-state Rev. 02 - 9 May 2008
NXP Semiconductors	74LV257	114Kb / 12P	Quad 2-input multiplexer 3-State 1998 May 20
	74HC_HCT257	195Kb / 18P	Quad 2-input multiplexer; 3-state Rev. 6-26 January 2015
	74AHC_AHCT257	99Kb / 16P	Quad 2-input multiplexer; 3-state Rev. 02-9 May 2008
Nexperia B.V. All right...	74HC257-Q100	1Mb / 16P	Quad 2-input multiplexer; 3-state
	74AHC257-Q100	706Kb / 17P	Quad 2-input multiplexer; 3-state
	74HCT257	249Kb / 15P	Quad 2-input multiplexer; 3-state Rev. 8 - 9 February 2021
NXP Semiconductors	74HC257	185Kb / 17P	Quad 2-input multiplexer; 3-state Rev. 05-13 January 2010
NXP Semiconductors	74AHC257	99Kb / 16P	Quad 2-input multiplexer 3-state Rev. 02-9 May 2008