74LVC257APW datasheet(6/10 Pages) PHILIPS

номер детали	74LVC257APW

подробное описание детали	Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs 3-State

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производитель	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product specification

74LVC257A

Quad 2-input multiplexer with 5 Volt tolerant

inputs/outputs (3-State)

1998 Jul 29

6

AC WAVEFORMS

VM = 0.5 × VCC at VCC < 2.7 V

VM = 1.5 V at VCC ≥ 2.7 V

VX = VOL + 0.3 V at VCC ≥ 2.7 V

VX = VOL + 0.1 × VCC at VCC < 2.7 V

VY = VOH – 0.3 V at VCC ≥ 2.7V

VY = VOH – 0.1 × VCC at VCC < 2.7 V

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

output load.

SV00641

VM

S, nI0, nI1

INPUTS

nY OUTPUT

VM

tPLH

tPHL

GND

VCC

VOL

VOH

Figure 1. Input (S, nl0, nl1) to output (nY) propagation delays.

SV00642

outputs

disabled

outputs

enabled

outputs

enabled

tPHZ

tPZH

tPZL

tPLZ

OUTPUT

HIGH-to-OFF

OFF-to-HIGH

OUTPUT

LOW-to-OFF

OFF-to-LOW

VM

OE INPUT

VX

VOL

VOH

VY

GND

VCC

VI

VM

Figure 2. 3-state enable and disable times.

TEST CIRCUIT

PULSE

GENERATOR

VI

RT

D.U.T.

VO

CL

50pF

S1

2 x VCC

Open

GND

500

Ω

500

Ω

VCC

VI

t 2.7V

VCC

2.7V – 3.6V

2.7V

Test

S1

GND

tPLZ/tPZL

2 x VCC

tPHZ/tPZH

tPLH/tPHL

Open

SY00003

VCC

Figure 3. Load circuitry for switching times.

Аналогичный номер детали - 74LVC257APW

производитель	номер детали	датащи	подробное описание детали
Nexperia B.V. All right...	74LVC257APW	262Kb / 14P	Quad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-state Rev. 8 - 31 August 2021

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Аналогичное описание - 74LVC257APW

производитель	номер детали	датащи	подробное описание детали
NXP Semiconductors	LVC257A	380Kb / 10P	Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) 1998 Jul 29
NXP Semiconductors	74LVC257A	193Kb / 18P	Quad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-state Rev. 6-28 November 2011
Nexperia B.V. All right...	74LVC257A	262Kb / 14P	Quad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-state Rev. 8 - 31 August 2021
NXP Semiconductors	74LVC125A	94Kb / 10P	Quad buffer/line driver with 5-volt tolerant inputs/outputs 3-State 1998 Apr 28
Toshiba Semiconductor	TC74LCX257F	223Kb / 10P	Low-Voltage Quad 2-Channel Multiplexer (3-state) with 5-V Tolerant Inputs and Outputs
Toshiba Semiconductor	TC74LCX257F	249Kb / 10P	Low-Voltage Quad 2-Channel Multiplexer (3-state) with 5-V Tolerant Inputs and Outputs
NXP Semiconductors	74LVC126A	115Kb / 20P	Quad buffer/line driver with 5 Volt tolerant input/outputs; 3-state 2003 Feb 28
Fairchild Semiconductor	74F258A	56Kb / 6P	Quad 2-Input Multiplexer with 3-STATE Outputs
Motorola, Inc	SN54LS257B	182Kb / 6P	QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
Fairchild Semiconductor	74ACT258	284Kb / 10P	Quad 2-Input Multiplexer with 3-STATE Outputs

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