FSTU3384MTC Fairchild Semiconductor, FSTU3384MTC Datasheet
FSTU3384MTC
Manufacturer Part Number
FSTU3384MTC
Description
10 Bit Bus Switch with -2 V Undershoot Protection
Manufacturer
Fairchild Semiconductor
Datasheet
1.FSTU3384MTC.pdf
(5 pages)
© 2000 Fairchild Semiconductor Corporation
FSTU3384WM
FSTU3384QSC
FSTU3384MTC
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.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Pin Descriptions
UHC
Order Number
OE
A
B
0
0
–A
–B
1
, OE
is a trademark of Fairchild Semiconductor Corporation.
9
9
Pin Names
2
Package Number
MQA24
MTC24
M24B
Bus Switch Enable
Bus A
Bus B
Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
DS500195
Features
Connection Diagram
Truth Table
OE
4 switch connection between two ports
Undershoot Hardened to -2.0V.
Minimal propagation delay through the switch
Low l
Zero ground bounce in flow-through mode
Control inputs compatible with TTL level
See Applications Note AN-5008 for details.
H
H
L
L
1
CC
Package Description
OE
H
H
.
L
L
2
A
A
HIGH-Z State A
HIGH-Z State HIGH-Z State
0
0
–A
–A
B
4
4
0
–B
4
A
HIGH-Z State
May 1999
Revised December 2000
5
5
–A
–A
B
9
9
5
–B
www.fairchildsemi.com
9
Disconnect
Function
Connect
Connect
Connect
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FSTU3384MTC Summary of contents
Page 1
... 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 Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. ...
Page 2
Absolute Maximum Ratings Supply Voltage ( Switch Voltage ( Input Voltage (V ) (Note Input Diode Current ( Output (I ) Sink Current OUT DC ...
Page 3
AC Electrical Characteristics Symbol Parameter V Min Prop Delay Bus to Bus (Note 6) PHL PLH Output Enable Time PZH PZL ...
Page 4
Physical Dimensions inches (millimeters) unless otherwise noted 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide www.fairchildsemi.com Package Number M24B Package Number MQA24 4 ...
Page 5
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Technology Description The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its 74LVX3L384 ...