IDT74CBTLV16800 Datasheet, PDF (1/5 Pages) Integrated Device Technology – LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS

IDT74CBTLV16800
LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS
LOW-VOLTAGE 20-BIT
BUS SWITCH WITH
PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
IDT74CBTLV16800
FEATURES:
• 5Ω A/B bi-directional switch
• 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 SSOP, TSSOP, and TVSOP packages
APPLICATIONS:
• 3.3V High Speed Bus Switching and Bus Isolation
DESCRIPTION:
The CBTLV16800 provides 20-bits of high-speed bus switching with low
on-state resistance of the switch allowing connections to be made with
minimal propagation delay. The device also precharges the B port to a
user-selectable bias voltage (BIASV) to minimize live-insertion noise.
The CBTLV16800 is organized as dual 10-bit bus switches with two
different output-enable (OE) control inputs. When OE is low, the corre-
sponding 10-bit bus 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, and port B is precharged to BIASV through the equivalent
of a 10-kΩ resistor.
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.
FUNCTIONAL BLOCK DIAGRAM
2
1A1
SW
1
BIASV
46
1B1
SIMPLIFIED SCHEMATIC, EACH
SWITCH
12
1A10
SW
48
1OE
13
2A1
SW
36 _1B10
A
35
2B1
24
2A10
SW
25
2B10
1
2OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c 2002 Integrated Device Technology, Inc.
B
OE
AUGUST 2002
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