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FSTU3384 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 FSTU3384
功能描述  10-Bit Bus Switch with −2V Undershoot Protection
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FSTU3384 数据表(HTML) 1 Page - Fairchild Semiconductor

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© 2000 Fairchild Semiconductor Corporation
DS500195
www.fairchildsemi.com
May 1999
Revised October 2006
FSTU3384
10-Bit Bus Switch with
−2V Undershoot Protection
General Description
The Fairchild Switch FSTU3384 provides 10 bits of high-
speed CMOS TTL-compatible bus switches. The low on
resistance of the switch allows inputs to be connected to
outputs without adding propagation delay generating addi-
tional ground bounce noise. Both the A Ports and the B
Ports have “undershoot hardened” circuit protection to sup-
port an extended input range to 2.0V below ground. Fair-
child’s integrated Undershoot Hardened Circuit (UHC®)
senses undershoot at the I/Os, and responds by preventing
voltage differentials from developing and turning on the
switch. The device is organized as two 5-bit switches with
separate bus enable (OE) signals. 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
s 4
Ω switch connection between two ports
s Undershoot Hardened to -2.0V.
s Minimal propagation delay through the switch
s Low lCC.
s Zero ground bounce in flow-through mode
s Control inputs compatible with TTL level
s See Applications Note AN-5008 for details.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Pin Descriptions
Connection Diagram
Truth Table
UHC® is a registered trademark of Fairchild Semiconductor Corporation.
Order Number
Package Number
Package Description
FSTU3384WM
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
FSTU3384QSC
MQA24
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
FSTU3384MTC
MTC24
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
OE1, OE2
Bus Switch Enable
A0–A9
Bus A
B0–B9
Bus B
OE1 OE2
B0–B4
B5–B9
Function
LL
A0–A4
A5–A9
Connect
LH
A0–A4
HIGH-Z State
Connect
H
L
HIGH-Z State
A5–A9
Connect
H
H
HIGH-Z State
HIGH-Z State
Disconnect


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