DESCRIPTION

· The 74LVX4245 is a dual supply low voltage CMOS OCTAL BUS TRANSCEIVER.

· Fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.

· Designed for interface between 5V and 3.3V buses in mixed supply systems.

· Enables two-way asynchronous communication between data buses.

· Direction of data transmission is controlled by DIR input.

· Enable input G can disable the device, isolating the buses.

· A-port interfaces with 5V bus, B-port with 3.3V bus.

· Inputs have protection against static discharge with 2KV ESD immunity.

FEATURES

· High speed: tPD = 8.5 ns (MAX.) at VCCA=5.0V, VCCB=3.3V.

· Low power dissipation: ICCA = ICCB = 5µA (MAX.) at TA=25°C.

· Low noise: VOLP = 0.3V (TYP.) at VCCA=5.5V, VCCB=3.3V.

· Symmetrical output impedance: |IOH| = IOL = 24mA (MIN).

· Balanced propagation delays: tPLH ≅ tPHL.

· Operating voltage range: VCCA(OPR) = 4.5V to 5.5V, VCCB(OPR) = 2.7V to 3.6V.

· Pin and function compatible with 74 series 4245.

· Improved latch-up immunity.

APPLICATIONS

· Interface between 5V and 3.3V buses in mixed supply systems.

· Two-way asynchronous communication between data buses.

· Data transmission direction control in mixed voltage systems.

· Bus isolation in mixed voltage environments.

· Systems requiring high-speed operation with low power dissipation.

· Applications needing protection against static discharge and transient excess voltage.