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參數資料
| 型號： | IDT54FCT825BSO |
| 廠商： | Integrated Device Technology, Inc. |
| 英文描述： | HIGH-PERFORMANCE CMOS BUS INTERFACE REGISTERS |
| 中文描述： | 高性能CMOS總線接口寄存器 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 186K |
| 代理商： | IDT54FCT825BSO |
Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
MAY 1992
1992 Integrated Device Technology, Inc.
7.19
DSC-4618/2
1
IDT54/74FCT821A/B/C
IDT54/74FCT823A/B/C
IDT54/74FCT824A/B/C
IDT54/74FCT825A/B/C
HIGH-PERFORMANCE
CMOS BUS INTERFACE
REGISTERS
FEATURES:
Equivalent to AMD’s Am29821-25 bipolar registers in
pinout/function, speed and output drive over full tem-
perature and voltage supply extremes
IDT54/74FCT821A/823A/824A/825A equivalent to
FAST
speed
IDT54/74FCT821B/823B/824B/825B 25% faster than
FAST
IDT54/74FCT821C/823C/824C/825C 40% faster than
FAST
Buffered common Clock Enable (
EN
) and asynchronous
Clear input (
CLR
)
I
OL
= 48mA (commercial) and 32mA (military)
Clamp diodes on all inputs for ringing suppression
CMOS power levels (1mW typ. static)
TTL input and output compatibility
CMOS output level compatible
Substantially lower input current levels than AMD’s
bipolar Am29800 series (5
μ
A max.)
Product available in Radiation Tolerant and Radiation
Enhanced versions
Military product compliant to MIL-STD-883, Class B
DESCRIPTION:
The IDT54/74FCT800 series is built using an advanced
dual metal CMOS technology.
The IDT54/74FCT820 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 IDT54/
74FCT821 are buffered, 10-bit wide versions of the popular
‘374 function. The IDT54/74FCT823 and IDT54/74FCT824
are 9-bit wide buffered registers with Clock Enable (
EN
) and
Clear (
CLR
) – ideal for parity bus interfacing in high-perform-
ance microprogrammed systems. The IDT54/74FCT825 are
8-bit buffered registers with all the ‘823 controls plus multiple
enables (
OE
1
,
OE
2
,
OE
3
) to allow multiuser control of the
interface, e.g.,
CS
, DMA and RD/
WR
. They are ideal for use
as an output port requiring HIGH I
OL
/I
OH
.
All of the IDT54/74FCT800 high-performance interface
family are 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 DIAGRAMS
IDT54/74FCT821/823/825
D
0
IDT54/74FCT824
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor Co.
2608 cnv* 01
2608 cnv* 02
D
CPQ
Q
CL
D
CPQ
Q
CL
D
N
Y
0
Y
N
EN
CLR
CP
OE
D
CPQ
Q
CL
D
CPQ
Q
CL
D
0
D
N
Y
0
Y
N
EN
CLR
CP
OE
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