IDT54/74FCT821/A/B
HIGH PERFORMANCE CMOS BUS INTERFACE REGISTER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
HIGH PERFORMANCE
CMOS BUS INTERFACE
REGISTER
FEATURES:
DESCRIPTION:
IDT54/74FCT821A/B
鈥?Equivalent to AMD鈥檚 Am29821-25 bipolar registers in pinout/
function, speed and output drive over full temperature and
voltage supply extremes
鈥?IDT54/74FCT821A equivalent to FAST鈩?speed
鈥?IDT54/74FCT821B 25% faster than FAST
鈥?I
OL
= 48mA (commercial) and 32mA (military)
鈥?Clamp diodes on all inputs for ringing suppression
鈥?CMOS power levels (1mW typ. static)
鈥?TTL input and output compatibility
鈥?CMOS output level compatible
鈥?Substantially lower input current levels than AMD鈥檚 bipolar
Am29800 series (5碌A max.)
鈥?Military product compliant to MIL-STD-883, Class B
鈥?Available in the following packages:
鈥?Commercial: SOIC
鈥?Military: CERDIP, LCC
The FCT821 series is built using an advanced dual metal CMOS
technology. The FCT821 series bus interface registers are designed to
eliminate the extra packages required to buffer existing registers and
provide extra data width for wider address/data paths or buses carrying
parity. The 74FCT821 is a buffered, 10-bit wide version of the popular
FCT374 function.
The FCT821 high-performance interface family is designed for high-
capacitance load drive capability, while providing low-capacitance bus
loading at both inputs and outputs. All inputs have clamp diodes and all
outputs are designed for low-capacitance bus loading in high-impedance
state.
FUNCTIONAL BLOCK DIAGRAM
OE
CP
C
1
D
0
1
D
Q
23
Y
TO NINE OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
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JUNE 2002
DSC-5427/2
漏 2002 Integrated Device Technology, Inc.
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