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參數(shù)資料
| 型號(hào)： | SCAN18541T |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Non-Inverting Line Driver with 3-STATE Outputs |
| 中文描述： | 非反相線驅(qū)動(dòng)器3態(tài)輸出 |
| 文件頁(yè)數(shù)： | 3/11頁(yè) |
| 文件大小： | 90K |
| 代理商： | SCAN18541T |
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www.fairchildsemi.com
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Description of Boundary-Scan Circuitry
The scan cells used in the BOUNDARY-SCAN register are
one of the following two types depending upon their loca-
tion. Scan cell TYPE1 is intended to solely observe system
data, while TYPE2 has the additional ability to control sys-
tem data.
Scan cell TYPE1 is located on each system input pin while
scan cell TYPE2 is located at each system output pin as
well as at each of the two internal active-high output enable
signals. AOE controls the activity of the A-outputs while
BOE controls the activity of the B-outputs. Each will acti-
vate their respective outputs by loading a logic high.
The BYPASS register is a single bit shift register stage
identical to scan cell TYPE1. It captures a fixed logic low.
Bypass Register Scan Chain Definition
Logic 0
The INSTRUCTION register is an 8-bit register which cap-
tures the default value of 10000001. The two least signifi-
cant bits of this captured value (01) are required by IEEE
Std 1149.1. The upper six bits are unique to the
SCAN18541T device. SCAN CMOS Test Access Logic
devices do not include the IEEE 1149.1 optional identifica-
tion register. Therefore, this unique captured value can be
used as a
“
pseudo ID
”
code to confirm that the correct
device is placed in the appropriate location in the boundary
scan chain.
Instruction Register Scan Chain Definition
MSB
→
LSB
Scan Cell TYPE1
Scan Cell TYPE2
Instruction Code
00000000
10000001
10000010
00000011
All Others
Instruction
EXTEST
SAMPLE/PRELOAD
CLAMP
HIGH-Z
BYPASS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SCAN18541T/MXA | 制造商:Rochester Electronics LLC 功能描述: |
| SCAN18541TFMQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SERIALLY CONTROLLED ACCESS NETWORK NON-INVERTING LINE DRIVER WITH TRI-STATE OUTPUTS |
| SCAN18541TFMQB WAF | 制造商:Texas Instruments 功能描述: |
| SCAN18541TSSC | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Non-Inv Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| SCAN18541TSSC-G | 制造商:Rochester Electronics LLC 功能描述: |
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