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參數資料
| 型號： | FSTU3125 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 4-Bit Bus Switch with −2V Undershoot Protection |
| 文件頁數： | 1/7頁 |
| 文件大小： | 136K |
| 代理商： | FSTU3125 |
2001 Fairchild Semiconductor Corporation
DS500449
www.fairchildsemi.com
June 2001
Revised August 2001
F
2
FSTU3125
4-Bit Bus Switch with
2V Undershoot Protection
General Description
The Fairchild Switch FSTU3125 provides four high-speed
CMOS TTL-compatible bus switches. The low On Resis-
tance of the switch allows inputs to be connected to out-
puts without adding propagation delay or generating
additional ground bounce noise. The A and B Ports are
protected against undershoot to support an extended
range to 2.0V below ground. Fairchild’s integrated Under-
shoot Hardened Circuit (UHC
) senses undershoot at the
I/O and responds by preventing voltage differentials from
developing and turning the switch on.
The device is organized as four 1-bit switches with sepa-
rate OE inputs. When OE is LOW, the switch is ON and
Port A is connected to Port B. When OE is HIGH, the
switch is OPEN and a high-impedance state exists
between the two ports.
Features
I
Undershoot hardened to
2V (A and B Ports)
I
4
switch connection between two ports
I
Minimal propagation delay through the switch
I
Low l
CC
I
Zero bounce in flow-through mode
I
Control inputs compatible with TTL level
I
See application notes AN-5008 and AN-5021 for details
on undershoot
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter
“
X
”
to the ordering code.
Connection Diagrams
Pin Assignment for SOIC and TSSOP
Pin Assignment for QSOP
Pin Descriptions
Truth Table
Order Number
FSTU3125M
FSTU3125QSC
FSTU3125MTC
Package Number
M14A
MQA16
MTC14
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Name
Description
OE
1
, OE
2
, OE
3
, OE
4
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
Bus Switch Enables
Bus A
Bus B
Not Connected
Inputs
Inputs/Outputs
OE
L
H
A,B
A
=
B
Z
相關PDF資料 |
PDF描述 |
|---|---|
| FSTU3125M | 4-Bit Bus Switch with −2V Undershoot Protection |
| FSTU3125MTC | 4-Bit Bus Switch with −2V Undershoot Protection |
| FSTU3125MTCX | Bus Switch |
| FSTU3125MX | Bus Switch |
| FSTU3125QSCX | Bus Switch |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FSTU3125 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FSTU3125M | 功能描述:數字總線開關 IC RoHS:否 制造商:Texas Instruments 開關數量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| FSTU3125MTC | 功能描述:數字總線開關 IC RoHS:否 制造商:Texas Instruments 開關數量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| FSTU3125MTCX | 功能描述:數字總線開關 IC RoHS:否 制造商:Texas Instruments 開關數量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| FSTU3125MX | 功能描述:數字總線開關 IC RoHS:否 制造商:Texas Instruments 開關數量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
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