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Número de pieza | FSTD16861MTD | |
Descripción | 20-Bit Bus Switch with Level Shifting | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
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No Preview Available ! May 2001
Revised May 2001
FSTD16861
20-Bit Bus Switch with Level Shifting
General Description
The Fairchild Switch FSTD16861 provides 20-bits 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. A diode to VCC has been
integrated into the circuit to allow for level shifting between
5V inputs and 3.3V outputs.
The device is organized as a 10-bit or 20-bit bus switch.
When OE1 is LOW, the switch is ON and Port 1A is con-
nected to Port 1B. When OE2 is LOW, Port 2A is connected
to Port 2B. When OEX is HIGH, a high impedance state
exists between the A and B Ports.
Features
s 4Ω switch connection between two ports.
s Minimal propagation delay through the switch.
s Low lCC.
s Zero bounce in flow-through mode.
s Control inputs compatible with TTL level.
s TruTranslation voltage translation from 5.0V inputs to
3.3V outputs
Ordering Code:
Order Number Package Number
Package Description
FSTD16861MTD
MTD48
48-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.
Connection Diagram
Logic Diagram
Pin Descriptions
Pin Name
OE1, OE2
1An, 2An
1Bn, 2Bn
Description
Bus Switch Enables
Bus A
Bus B
TruTranslation is trademark of Fairchild Semiconductor Corporation.
© 2001 Fairchild Semiconductor Corporation DS500421
Truth Table
Inputs
OE1
OE2
LL
LH
HL
HH
H = HIGH Voltage Level
L = LOW Voltage Level
Z = High Impedance
Inputs/Outputs
1A, 1B
1A = 1B
1A = 1B
Z
Z
2A, 2B
2A = 2B
Z
2A = 2B
Z
www.fairchildsemi.com
1 page Physical Dimensions inches (millimeters) unless otherwise noted
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Package Number MTD48
Technology Description
The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its
74LVX3L384(FST3384) bus switch product.
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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5 www.fairchildsemi.com
5 Page |
Páginas | Total 5 Páginas | |
PDF Descargar | [ Datasheet FSTD16861MTD.PDF ] |
Número de pieza | Descripción | Fabricantes |
FSTD16861MTD | 20-Bit Bus Switch with Level Shifting | Fairchild Semiconductor |
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