CBTLV16215 LOW-VOLTAGE 20-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS

SCDS045A - DECEMBER 1997 - REVISED MARCH 1998

features

• 5-Ω Switch Connection Between Two Ports
• Isolation Under Power-Off Conditions
• B-Port Outputs are Precharged by Bias Voltage to Minimize Signal Distortion During Live Insertion
• Package Options Include Plastic Thin Shrink Small-Outline (DGG), Thin Very Small-Outline (DGV), and 300-mil Shrink Small-Outline (DL) Packages

description

The CBTLV16215 provides 20 bits of high-speed bus switching. The low on-state resistance of the switch allows 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 device is organized as dual 10-bit bus switches with separate output-enable (OE\) inputs. It can be used as two 10-bit bus switches or one 20-bit bus switch. When OE\ is low, the associated 10-bit bus switch is on and port A is connected to port B. When OE\ is high, the switch is open, 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 V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The CBTLV16215 is characterized for operation from -40°C to 85°C.

View more information about generic part numbers:SN74CBTLV16215

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