参数资料
型号: IDT74LVC257ADY
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 编、解码器及复用、解复用
英文描述: LVC/LCX/Z SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封装: 0.65 MM PITCH, SSOP-16
文件页数: 1/6页
文件大小: 109K
代理商: IDT74LVC257ADY
1
EXTENDEDCOMMERCIALTEMPERATURERANGE
IDT74LVC257A
3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
FEBRUARY 2000
1999
Integrated Device Technology, Inc.
DSC-4741/-
c
IDT74LVC257A
EXTENDED COMMERCIAL TEMPERATURE RANGE
DESCRIPTION
The LVC257A is built using advanced dual metal CMOS technology and
is designed to multiplex signals from 4-bit data sources to 4-output data lines
inbus-organized systems.The3-stateoutputsdonotloadthedatalineswhen
the output-enable (
OE) input is at a high logic level.
The LVC257A has been designed with a ±24mA output driver. This driver
is capable of driving a moderate to heavy load while maintaining speed
performance.
To ensure the high-impedance state during power up or power down,
OE
shouldbetiedtoVCCthroughapullupresisitor;theminimumvalueoftheresistor
is determined by the current-sinking capability of the driver.
Inputs can be driven from either 3.3V or 5V devices. This feature allows the
use of this device as a translator in a mixed 3.3V/5V supply system.
FEATURES:
0.5 MICRON CMOS Technology
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
1.27mm pitch SOIC, 0.635mm pitch QSOP,
0.65mm pitch SSOP, 0.65mm pitch TSSOP packages
Extended commercial range of – 40°C to +85°C
–VCC = 3.3V ±0.3V, Normal Range
–VCC = 2.3V to 3.6V, Extended Range
CMOS power levels (0.4 W typ. static)
Rail-to-Rail output swing for increased noise margin
All inputs, outputs and I/O are 5 Volt tolerant
Supports hot insertion
3.3V CMOS QUADRUPLE
2-LINE TO 1-LINE DATA
SELECTOR/MULTIPLEXER WITH
3-STATE OUTPUTS, 5V TOLERANT I/O
FUNCTIONAL BLOCK DIAGRAM
1
Y
4
1
A
2
Y
7
3
Y
9
4
Y
12
1
B
2
A
2
B
3
A
3
B
4
A
4
B
2
3
5
6
11
10
14
13
OE
A/B
1
15
Drive Features for LVC257A:
High Output Drivers: ±24mA
Reduced system switching noise
APPLICATIONS:
5V and 3.3V mixed voltage systems
Data communication and telecommunication systems
相关PDF资料
PDF描述
IDT74LVC258APG8 LVC/LCX/Z SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDSO16
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