74AC257M datasheet(1/11 Pages) STMICROELECTRONICS

tên linh kiện	74AC257M

Giải thích chi tiết về linh kiện	QUAD 2 CHANNEL MULTIPLEXER 3-STATE

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1/11

April 2001

s

HIGH SPEED: tPD = 4.5ns (TYP.) at VCC = 5V

s

LOW POWER DISSIPATION:

ICC = 4µA(MAX.) at TA=25°C

s

HIGH NOISE IMMUNITY:

VNIH = VNIL = 28 % VCC (MIN.)

s

50

Ω TRANSMISSION LINE DRIVING

CAPABILITY

s

SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN)

s

BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s

OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 257

s

IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74AC257 is an advanced high-speed CMOS

QUAD 2-CHANNEL MULTIPLEXER (3-STATE)

fabricated

with

sub-micron silicon gate and

double-layer metal wiring C2MOS tecnology.

It is composed of four independent 2-channel

multiplexer with common SELECT and ENABLE

(OE) inputs. It is a non-inverting multiplexer. When

the OE input is held HIGH,all the output become in

high impedance state. If SELECT input is held

LOW, "A" data is selected, when SELECT input is

held HIGH, "B" data is chosen.

All

inputs

and

outputs

are

equipped

with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

74AC257

QUAD 2 CHANNEL MULTIPLEXER (3-STATE)

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

74AC257B

SOP

74AC257M

74AC257MTR

TSSOP

74AC257TTR

TSSOP

DIP

SOP

Số phần tương tự - 74AC257M

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Fairchild Semiconductor	74AC257MTC	97Kb / 9P	Quad 2-Input Multiplexer with 3-STATE Outputs

More results

Mô tả tương tự - 74AC257M

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	74VHC257	315Kb / 14P	QUAD 2 CHANNEL MULTIPLEXER 3-STATE 12-Nov-2004
	74VHCT257A	70Kb / 10P	QUAD 2 CHANNEL MULTIPLEXER 3-STATE Mar-2000
	M54HCT257	255Kb / 12P	HCT257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE HCT258 QUAD 2 CHANNEL MULTIPLEXER 3-STATE, INVERTING Feb-1993
Toshiba Semiconductor	TC74VHC257F	235Kb / 7P	QUAD 2-CHANNEL MULTIPLEXER (3-STATE)
STMicroelectronics	M74HC257	190Kb / 11P	QUAD 2 CHANNEL MULTIPLEXER (3-STATE) Aug-2001
Toshiba Semiconductor	TC74HC257AP	264Kb / 8P	Quad 2-Channel Multiplexer (3-state)
Toshiba Semiconductor	TC7MH257FK	189Kb / 7P	Quad 2-Channel Multiplexer (3-State)
STMicroelectronics	74ACT257	286Kb / 11P	QUAD 2 CHANNEL MULTIPLEXER (3-STATE) Apr-2001
STMicroelectronics	74VHCT257A	311Kb / 13P	QUAD 2 CHANNEL MULTIPLEXER (3-STATE) 16-Dec-2004
Toshiba Semiconductor	TC74VHC257F	224Kb / 9P	Quad 2-Channel Multiplexer (3-state)

More results

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Số phần tương tự - 74AC257M

Mô tả tương tự - 74AC257M

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