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| 型号： | IDT54FCT257DTDSOB |
| 厂商： | Integrated Device Technology, Inc. |
| 英文描述： | FAST CMOS QUAD 2-INPUT MULTIPLEXER |
| 中文描述： | 快速CMOS四路2输入多路复用器 |
| 文件页数： | 1/7页 |
| 文件大小： | 73K |
| 代理商： | IDT54FCT257DTDSOB |
MILITARYANDINDUSTRIALTEMPERATURERANGES
IDT54/74FCT257T/AT/CT/DT
FASTCMOSQUAD2-INPUTMULTIPLEXER
1
JUNE 2001
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
2002 Integrated Device Technology, Inc.
DSC-5500/2
FEATURES:
Std., A, C, and D grades
Low input and output leakage
≤≤≤≤≤1A (max.)
CMOS power levels
True TTL input and output compatibility:
–VOH = 3.3V (typ.)
–VOL = 0.3V (typ.)
High Drive outputs (-15mA IOH, 48mA IOL)
Meets or exceeds JEDEC standard 18 specifications
Military product compliant to MIL-STD-883, Class B and DESC
listed (dual marked)
Power off disable outputs permit "live insertion"
Available in the following packages:
– Industrial: SOIC, QSOP
– Military: CERDIP, LCC
FUNCTIONAL BLOCK DIAGRAM
IDT54/74FCT257T/AT/CT/DT
FAST CMOS
QUAD 2-INPUT
MULTIPLEXER
DESCRIPTION:
The FCT257T is a high-speed quad 2-input multiplexer built using an
advanced dual metal CMOS technology. Four bits of data from two sources
can be selected using the common select input. The four buffered outputs
present the selected data in the true (non-inverting) form.
The FCT257T has a common Output Enable (OE) input. When OE is
high,alloutputsareswitchedtoahigh-impedancestateallowingtheoutputs
to interface directly with bus-oriented systems.
Three other multiplexers
OE
Z A
Z B
Z D
S
I1B
I1D
I0B
I0D
I1A
I0A
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