IDT74CBTLV3257

Features:

-  Functionally equivalent to QS3257
-  5W 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 SSOP, QSOP, and TSSOP packages


Application

-  3.3V High Speed Bus Switching, Multiplexing, and Bus Isolation


Pinout




Specifications

Symbol	Description	Max.	Unit
VCC	Supply Voltage Range	0.5 to 4.6	V
VI	Input Voltage Range	0.5 to 4.6	V
	Continuous Channel Current	128	mA
IIK	Input Clamp Current, VI/O < 0	50	mA
TSTG	Storage Temperature	65 to +150	°C

Description

The SN74CBTLV3253 is a dual 1-of-4 high-speed FET multiplexer/demultiplexer. The low on-state resistance of the switch allows connections to be made with minimal propagation delay.

The select (S0, S1) inputs control the data flow. The FET multiplexers/demultiplexers IDT74CBTLV3257 are disabled when the associated output-enable (OE) input is high.

IDT74CBTLV3257 is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE IDT74CBTLV3257 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.