ADG3257

Features:

100 ps Propagation Delay through the Switch
Data Rates up to 933 Mbps
Single 3.3 V/5 V Supply Operation
Level Translation Operation
Ultralow Quiescent Supply Current (1 nA Typical)
3.5 ns Switching
Standard '3257 Type Pinout




Application

Bus Switching
Bus Isolation
Level Translation
Memory Switching/Interleaving




Pinout








Specifications

V_CC to GND . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to +6 V
Digital Inputs to GND . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
DC Input Voltage . . . . . . . . . . . . . . . . . . . . . .0.3 V to +6 V
DC Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . .. . . 150°C
QSOP Package
_JA Thermal Impedance . . . . . . . . . . . . . . . . . 149.97°C/W
Lead Temperature, Soldering (10 sec) . . . . . . .. . . . 300°C
IR Reflow, Peak Temperature (<20 sec) . . . . . . . . . 235°C






Description

The ADG3257 is a CMOS bus switch comprised of four 2:1 multiplexers/demultiplexers with high impedance outputs. The device is manufactured on a CMOS process. This provides low power dissipation yet high switching speed and very low ON resistance, allowing the inputs to be connected to the outputs without adding propagation delay or generating additional ground bounce noise.

The ADG3257 operates from a single 3.3 V/5 V supply. The control logic for each switch is shown in Table I. These switches are bidirectional when ON. In the OFF condition, signal levels are blocked up to the supplies. This bus switch is suited to both switching and level translation applications. It may be used in applications requiring level translation from 3.3 V to 2.5 V when powered from 3.3 V. Additionally, with a diode connected in series with 5 V VDD, the ADG3257 may also be used in applications requiring 5 V to 3.3 V level translation.