IDT74CBTLV3257_08 Datasheet, PDF (1/5 Pages) Integrated Device Technology – LOW-VOLTAGE QUAD 2:1MUX/DEMUX BUS SWITCH Over-voltage tolerant

IDT74CBTLV3257
LOW-VOLTAGE QUAD 2:1 MUX/DEMUX BUS SWITCH
LOW-VOLTAGE
QUAD 2:1MUX/DEMUX
BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
IDT74CBTLV3257
FEATURES:
• Functionally equivalent to QS3257
• 5Ω switch connection between two ports
• Isolation under power-off conditions
• Over-voltage tolerant
• Latch-up performance exceeds 100mA
• VCC = 2.3V - 3.6V, Normal Range
• ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
• Available in QSOP and TSSOP packages
DESCRIPTION:
The CBTLV3257 is a quad 2:1 multiplexer/demultiplexer. The low on-
state resistance of the switch allows connections to be made with minimal
propagation delay.
The select (S) input controls the data flow. The multiplexers/demultiplexers
are enabled when the output-enable (OE) input is low.
To ensure the high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking capability of the driver.
APPLICATIONS:
• 3.3V High Speed Bus Switching, Multiplexing, and Bus Isolation
FUNCTIONAL BLOCK DIAGRAM
1A
SW
SW
2A
SW
SW
SIMPLIFIED SCHEMATIC, EACH
SWITCH
1B1
1B2
2B1
A
2B2
B
3A
SW
3B1
SW
3B2
4A
SW
4B1
SW
4B2
FROM ENABLE
CIRCUITRY
S
OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2006 Integrated Device Technology, Inc.
OCTOBER 2008
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