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參數資料
| 型號： | CY74FCT821TDIP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8-/9-/10-Bit Bus Interface Registers |
| 中文描述： | 8-/9-/10-Bit總線接口寄存器 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 95K |
| 代理商： | CY74FCT821TDIP |
8-/9-/10-Bit Bus Interface Registers
CY74FCT821T
CY74FCT823T
CY74FCT825T
SCCS033 - May 1994 - Revised March 2000
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
Copyright
2000, Texas Instruments Incorporated
Features
Function,pinout,anddrivecompatiblewithFCT,F,and
Am29821/23/25 logic
FCT-C speed at 6.0 ns max.
FCT-B speed at 7.5 ns max.
Reduced V
(typically = 3.3V) versions of equivalent
FCT functions
Edge-rate control circuitry for significantly improved
noise characteristics
Power-off disable feature
Matched rise and fall times
Fully compatible with TTL input and output logic levels
ESD > 2000V
Sink current
64 mA
Source current
32 mA
High-speed parallel registers with positive
edge-triggered D-type flip-flops
Bufferedcommonclockenable(EN)andasynchronous
clear input (CLR)
Extended commercial range of
40C to +85C
Functional Description
These 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 FCT821T is a buffered, 10-bit wide version
of the popular FCT374 function. The FCT823T is a 9-bit wide
buffered register with clock enable (EN) and clear (CLR) ideal
for parity bus interfacing in high-performance micropro-
grammed systems. The FCT825T is an 8-bit buffered register
with all the FCT823T 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
.
These devices are designed for high-capacitance load drive
capability, while providing low-capacitance bus loading at both
inputs and outputs. Outputs are designed for low-capacitance
busloadinginthehigh-impedancestateandaredesignedwith
a power-off disable feature to allow for live insertion of boards.
Note:
1.
Not on FCT821.
CL
D
Y
0
CP
OE
CLR
EN
D
0
Q
CP
Q
CL
D
Y
1
D
1
Q
CP
Q
CL
D
Y
2
D
2
Q
CP
Q
CL
D
Y
3
D
3
Q
CP
Q
CL
D
Y
4
D
4
Q
CP
Q
CL
D
Y
5
D
5
Q
CP
Q
CL
D
Y
n- 1
D
N- 1
Q
CP
Q
CL
D
Y
n
D
N
Q
CP
Q
[1]
[1]
Logic Block Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| CY74FCT821TQSOP | 8-/9-/10-Bit Bus Interface Registers |
| CY74FCT821TSOIC | 8-/9-/10-Bit Bus Interface Registers |
| CY74FCT823TDIP | 8-/9-/10-Bit Bus Interface Registers |
| CY74FCT823TQSOP | 8-/9-/10-Bit Bus Interface Registers |
| CY74FCT823TSOIC | 8-/9-/10-Bit Bus Interface Registers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CY74FCT823ATPC | 功能描述:觸發器 9B Bus Interface Flip-Flops RoHS:否 制造商:Texas Instruments 電路數量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| CY74FCT823ATPCE4 | 功能描述:觸發器 9B Bus Interface Flip-Flops RoHS:否 制造商:Texas Instruments 電路數量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| CY74FCT823ATQC | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Cypress Semiconductor 功能描述: |
| CY74FCT823ATQCT | 功能描述:觸發器 9B Bus Interface Flip-Flops RoHS:否 制造商:Texas Instruments 電路數量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| CY74FCT823ATQCTG4 | 功能描述:觸發器 9B Bus Interface Flip-Flops RoHS:否 制造商:Texas Instruments 電路數量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
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