FSTD16450MTD Fairchild Semiconductor, FSTD16450MTD Datasheet

FSTD16450MTD

Manufacturer Part Number
FSTD16450MTD
Description
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FSTD16450MTD

Logic Family
FST
Number Of Bits
20
Technology
CMOS
High Level Output Current
-128mA
Low Level Output Current
128mA
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Operating Supply Voltage (min)
4V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Pin Count
56
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
© 2001 Fairchild Semiconductor Corporation
FSTD16450GX
(Note 1)
FSTD16450MTD
FSTD16450
Configurable 4-Bit to 20-Bit Bus Switch
with Selectable Level Shifting
General Description
The Fairchild Universal Bus Switch FSTD16450 provides
4-bit, 5-bit, 8-bit, 10-bit, 16-bit, 20-bit of high-speed CMOS
TTL-compatible bus switching. The low on resistance of
the switch allows inputs to be connected to outputs without
adding propagation delay or generating additional ground
bounce noise.
The FSTD16450 is designed to allow “customer” configura-
tion control of the enable connections. The device is orga-
nized as either a 4-bit, 5-bit, 10-bit or 20-bit bus switch. 8-
bit and 16-bit configurations are also achievable (see Func-
tional Description). The device's bit configuration is chosen
through select pin logic. (see Truth Table). When OE
LOW, Port A
the switch is OPEN.
Another key device feature is the addition of a level shifting
select pin, “S
standard N-MOS switch. When S
is integrated into the circuit allowing for level shifting
between 5V inputs and 3.3V outputs.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Note 1: BGA package available in Tape and Reel only.
UHC
Order Number
is a trademark of Fairchild Semiconductor Corporation.
x
2
is connected to Port B
”. When S
Package Number
(Preliminary)
2
BGA54A
MTD56
is LOW, the device behaves as a
2
is HIGH, a diode to V
x
. When OE
54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
[Tape and Reel]
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
DS500438
x
is HIGH,
x
CC
is
Features
Applications Note
Select pins S
user configurable control pins. The AC performance of
these pins has not been characterized or tested. Switching
of these select pins during system operation may tempo-
rarily disrupt output logic states and/or enable pin controls.
4 switch connection between two ports
Voltage level shifting
Minimal propagation delay through the switch
Low l
Zero bounce in flow-through mode
Control inputs compatible with TTL level
Also packaged in plastic Fine-Pitch Ball Grid Array
(FBGA) (Preliminary)
CC
Package Description
0
, S
1
, S
2
are intended to be used as static
January 2001
Revised August 2001
www.fairchildsemi.com

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FSTD16450MTD Summary of contents

Page 1

... Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide (Note 1) (Preliminary) [Tape and Reel] FSTD16450MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. ...

Page 2

Connection Diagrams Pin Assignments for TSSOP Pin Assignments for FBGA (Top Thru View) www.fairchildsemi.com Pin Descriptions Pin Name Description Bus Switch Enables 1 2 1A, 2A Bus A 1B, 2B Bus Bit Configuration ...

Page 3

Logic Diagrams 20-Bit Configuration (Configuration 1) 5-Bit Configuration (Configuration 3) 10-Bit Configuration (Configuration 2) 4-Bit Configuration (Configuration 4) 3 www.fairchildsemi.com ...

Page 4

Functional Description The device can also be configured and 16-bit device by grounding the unused pins in Configurations 2 and 1 respectively. The 8-bit configuration may also be achieved by tying two of the 4-bit enables from ...

Page 5

Truth Tables (Continued Configuration Inputs ...

Page 6

Absolute Maximum Ratings Supply Voltage ( Switch Voltage (V ) (Note Input Control Pin Voltage (V ) (Note Input Diode Current ( Output (I ) ...

Page 7

AC Electrical Characteristics Symbol Parameter Propagation Delay Bus-to-Bus PHL PLH (Note Output Enable Time PZH PZL Output Disable Time PHZ PLZ Output ...

Page 8

AC Loading and Waveforms www.fairchildsemi.com Note: Input driven by 50 source terminated in 50 Note: C includes load and stray capacitance L Note: Input Frequency 1.0 MHz, t FIGURE 1. AC Test Circuit FIGURE 2. AC Waveforms 8 500 ns ...

Page 9

FIGURE 3. 9 www.fairchildsemi.com ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide www.fairchildsemi.com Package Number BGA54A Preliminary 10 ...

Page 11

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Technology Description The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its 74LVX3L384 ...

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