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參數(shù)資料
| 型號(hào)： | 74ACT818 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Two 1-Bit LVTTL/GTLP Adj-Edge-Rate Bus Xcvrs w Split LVTTL Port, Fdbk Path and Selectable Polarity 20-TVSOP -40 to 85 |
| 中文描述： | 8位診斷登記 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 55K |
| 代理商： | 74ACT818 |
2000 Fairchild Semiconductor Corporation
DS009801
www.fairchildsemi.com
July 1988
Revised September 2000
7
74ACT818
8-Bit Diagnostic Register
General Description
The ACT818 is a high-speed, general-purpose pipeline
register with an on-board diagnostic register for performing
serial diagnostics and/or writable control store loading.
The D-to-Y path provides an 8-bit parallel data path pipe-
line register for normal system operation. The diagnostic
register can load parallel data to or from the pipeline regis-
ter and can output data through the D input port (as in
WCS loading).
The 8-bit diagnostic register has multiplexer inputs that
select parallel inputs from the Y-port or adjacent bits in the
diagnostic register to operate as a right-shift-only register.
This register can then participate in a serial loop throughout
the system where normal data, address, status and control
registers are replaced with ACT818 diagnostic pipeline reg-
isters. The loop can be used to scan in a complete test rou-
tine starting point (Data, Address, etc.). Then after a
specified number of machine cycles it scans out the results
to be inspected for the expected results. WCS loading can
be accomplished using the same technique. An instruction
word can be serially shifted into the shadow register and
written into the WCS RAM by enabling the D output.
Features
I
On-line and off-line system diagnostics
I
Swaps the contents of diagnostic register and output
register
I
Diagnostic register and diagnostic testing
I
Cascadable for wide control words as used in micropro-
gramming
I
Edge-triggered D registers
I
Outputs source/sink 24 mA
I
ACT818 has TTL-compatible inputs
I
ACT818 is functionally- and pin-compatible to AMD
Am29818 and MMI 74S818
Applications
Register for microprogram control store
Status register
Data register
Instruction register
Interrupt mask register
Pipeline register
General purpose register
Parallel-serial/serial-parallel converter
Ordering Code:
Logic Symbol
Connection Diagram
FACT
is a trademark of Fairchild Semiconductor Corporation.
Order Number
74ACT818SPC
Order Package
N24C
Package Description
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74ACT818SPC | Two 1-Bit LVTTL/GTLP Adj-Edge-Rate Bus Xcvrs w Split LVTTL Port, Fdbk Path and Selectable Polarity 20-SOIC -40 to 85 |
| 74ACTQ02 | CONNECTOR ACCESSORY |
| 74ACTQ02PC | CONNECTOR ACCESSORY |
| 74ACTQ02SC | CONNECTOR ACCESSORY |
| 74ACTQ02SJ | Quad 2-Input NOR Gate |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74ACT818 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74ACT818SPC | 功能描述:寄存器 8-Bit Diagnostic Reg RoHS:否 制造商:NXP Semiconductors 邏輯類型:CMOS 邏輯系列:HC 電路數(shù)量:1 最大時(shí)鐘頻率:36 MHz 傳播延遲時(shí)間: 高電平輸出電流:- 7.8 mA 低電平輸出電流:7.8 mA 電源電壓-最大:6 V 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-38 封裝:Tube |
| 74ACT821MTCX | 功能描述:觸發(fā)器 10-Bit D Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)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(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| 74ACT821SC | 功能描述:觸發(fā)器 10-Bit D Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)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(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| 74ACT821SCX | 功能描述:觸發(fā)器 10-Bit D Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)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(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
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