IDT74FST163233
16-BIT 2:1 MUX/DEMUX SWITCH
INDUSTRIAL TEMPERATURE RANGE
16-BIT 2:1 MUX/DEMUX
SWITCH
IDT74FST163233
FEATURES:
DESCRIPTION:
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The FST163233 belongs to IDT's family of Bus switches. Bus switch
devices perform the function of connecting or isolating two ports without
providing any inherent current sink or source capability. Thus they
generate little or no noise of their own while providing a low resistance path
for an external driver. These devices connect input and output ports through
an n-channel FET. When the gate-to-source junction of this FET is
adequately forward-biased the device conducts and the resistance between input and output ports is small. Without adequate bias on the gateto-source junction of the FET, the FET is turned off, therefore with no VCC
applied, the device has hot insertion capability.
The low on-resistance and simplicity of the connection between input and
output ports reduces the delay in this path to close to zero.
The FST163233 provides three 16-bit TTL-compatible ports that support 2:1 multiplexing. The SEL0,1 and TEST0,1 pins provide switch enable
and mux select control as shown below.
The A port can be connected to port 1B or port 2B or both ports 1B and
2B.
Bus switches provide zero delay paths
Low switch on-resistance
TTL-compatible input and output levels
ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• Hot insertion capability
• Very low power dissipation
• Available in SSOP and TSSOP packages
FUNCTIONAL BLOCK DIAGRAM
SEL1
TEST1
SEL0
TEST0
0A 1 - 8
1A 9 - 16
2B 1 - 8
2B 9 - 16
1B 9 - 16
1B 1 - 8
One of 16 Channels
One of 16 Channels
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
MAY 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-5517/3
