參數(shù)資料
型號(hào): FSTU3125QSC
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi): 通用總線功能
英文描述: 4-Bit Bus Switch with −2V Undershoot Protection
中文描述: CBT/FST/QS/5C/B SERIES, 4-BIT DRIVER, TRUE OUTPUT, PDSO16
封裝: 0.150 INCH, MO-137, QSOP-16
文件頁(yè)數(shù): 1/7頁(yè)
文件大?。?/td> 136K
代理商: FSTU3125QSC
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(guān)PDF資料
PDF描述
FSTU3125 4-Bit Bus Switch with −2V Undershoot Protection
FSTU3125M 4-Bit Bus Switch with −2V Undershoot Protection
FSTU3125MTC 4-Bit Bus Switch with −2V Undershoot Protection
FSTU3125MTCX Bus Switch
FSTU3125MX Bus Switch
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