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IDT74FCT623TPB fiches techniques PDF

Integrated Device Technology - FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)

Numéro de référence IDT74FCT623TPB
Description FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
Fabricant Integrated Device Technology 
Logo Integrated Device Technology 





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IDT74FCT623TPB fiche technique
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
FAST CMOS OCTAL
BUS TRANSCEIVERS
Integrated Device Technology, Inc.
(3-STATE)
IDT54/74FCT623T/AT/CT
FEATURES:
• Std., A and C speed grades
• Low input and output leakage 1µA (max.)
• CMOS power levels
• True TTL input and output compatibility
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
• High drive outputs (-15mA IOH, 64mA IOL)
• Power off disable outputs permit “live insertion”
• Meets or exceeds JEDEC standard 18 specifications
• Product available in Radiation Tolerant and Radiation
Enhanced versions
• Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
• Available in DIP, SOIC, CERPACK and LCC packages
DESCRIPTION
The FCT623T/AT/CT is a non-inverting octal transceiver
with 3-state bus-driving outputs in both the send and receive
directions. The B bus outputs are capable of sinking 64mA and
sourcing up to 15mA, providing very good capacitive drive
characteristics.
These octal bus transceivers are designed for asynchro-
nous two-way communication between data buses. The control
function implementation allows for maximum flexibility in
timing.
One important feature of the FCT623T/AT/CT is the Power
GDown Disable capability. When the GAB and BA inputs are
conditioned to put the device in high-Z state, the I/O ports will
maintain high impedance during power supply ramps and
when VCC = 0V. This is a desirable feature in back-plane
applications where it may be necessary to perform “live”
insertion and removal of cards for on-line maintenance. It is
also a benefit in systems with multiple redundancy where one
or more redundant cards may be powered-off.
FUNCTIONAL BLOCK DIAGRAM
GBA
GAB
A1
B1
A2 - A8
7 other transceivers
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
6.19
6.19
B2 - B8
2563 drw 01
NOVEMBER 1995
DSC-2563/5
1
1

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