74LVX3245MTCX

The LVX3245 is a dual-supply, 8-bit translating transceiver that is designed to interface between a 3V bus and a 5V bus in a mixed 3V/5V supply environment. The Transmit/ Receive (T/R) input determines the direction of data flow. Transmit (active-HIGH) enables data from A Ports to B Ports; Receive (active-LOW) enables data from B Ports to A Ports. The Output Enable input, when HIGH, disables both A and B Ports by placing them in a high impedance condition. The A Port interfaces with the 3V bus; the B Port interfaces with the 5V bus. The LVX3245 is suitable for mixed voltage applications such as notebook computers using 3.3V CPU and 5V peripheral components. The LVX3245 is a dual supply device capable of bidirectional signal translation. This level shifting ability provides an efficient interface between low voltage CPU local bus with memory and a standard bus defined by 5V I/O levels. The device control inputs can be controlled by either the low voltage CPU and core logic or a bus arbitrator with 5V I/O levels. Manufactured on a sub-micron CMOS process, the LVX3245 is ideal for mixed voltage applications such as notebook computers using 3.3V CPU’s and 5V peripheral devices.

Applications

• notebook computers using 3.3V CPU and 5V peripheral components

Key features

• Bidirectional interface between 3V and 5V buses
• Inputs compatible with TTL level
• 3V data flow at A Port and 5V data flow at B Port
• Outputs source/sink 24 mA
• Guaranteed simultaneous switching noise level and dynamic threshold performance
• Implements proprietary EMI reduction circuitry
• Functionally compatible with the 74 series 245