参数资料
型号: IDT74FCT2543ATSOG
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 总线收发器
英文描述: FCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封装: SOIC-24
文件页数: 1/7页
文件大小: 72K
代理商: IDT74FCT2543ATSOG
INDUSTRIALTEMPERATURERANGE
IDT74FCT2543AT/CT
FASTCMOSOCTALLATCHEDTRANSCEIVER
1
JUNE 2002
INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
2002 Integrated Device Technology, Inc.
DSC-5490/3
FEATURES:
A and C 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.)
Resistor outputs (-15mA IOH, 12mA IOL)
Meets or exceeds JEDEC standard 18 specifications
Reduced system switching noise
Available in SOIC and QSOP packages
FUNCTIONAL BLOCK DIAGRAM
IDT74FCT2543AT/CT
FAST CMOS
OCTAL LATCHED
TRANSCEIVER
DESCRIPTION:
The FCT2543T is a non-inverting octal transceiver built using an
advanced dual metal CMOS technology. This device contains two sets of
eight D-type latches with separate input and output controls for each set. For
data flow from A to B, for example, the A-to-B Enable (
CEAB) input must be
low in order to enter data from A0–A7 or to take data from B0–B7, as indicated
in the Function Table. With
CEAB low, a low signal on the A-to-B Latch
Enable (
LEAB) input makes the A-to-B latches transparent; a subsequent
low-to-high transition of the
LEAB signal puts the A latches in the storage
mode and their outputs no longer change with the A inputs. With
CEAB and
OEAB both low, the 3-state B output buffers are active and reflect the data
present at the output of the A latches. Control of data from B to A is similar,
but uses the
CEBA, LEBA and OEBA inputs.
The FCT2543T has balanced output drive with current limiting resistors.
This offers low ground bounce, minimal undershoot and controlled output
fall times-reducing the need for external series terminating resistors.
FCT2543T parts are plug-in replacements for FCT543T parts.
A 1
Q
OEBA
A 2
A 3
A 4
A 5
A 6
A 7
B 1
B 2
B 3
B 4
B 5
B 6
B 7
CEBA
LEBA
OEAB
CEAB
LEAB
DETAIL A x 7
D
LE
Q
D
LE
DETAIL A
A 0
B0
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