SN75462P

Introduction

The SN75462P is a versatile integrated circuit (IC) used in applications that require a voltage translator or interface between two different voltage levels. It’s used in the interface and driver applications realizable with its dedicated internal circuitry. This device is designed for easy integration in systems requiring full duplex communication between two different voltage domains. The SN75462P utilizes a high speed Schmitt trigger comparator, an overvoltage and undervoltage catch cell, a feedback circuit and an active pull-up.

Features of SN75462P

• Allows for full duplex communication between two voltage domains
• Supports transmission up to 20V
• Provides a low IVDD operating current of 310 μA, with power saving standby current
• Wide operating supply voltage range of 2 V to 20V
• Prevents open-state and cross-state leakage current
• Protects against surges and hiccups of up to 25V
• Low propagation delay time
• TTL compatible inputs
• Available in 16-pin DIP and 32-pin SMT packages

Applications

The SN75462P is ideally suited for a variety of data transmission applications and is widely used in all sorts of systems to provide a reliable voltage translator between two voltage domains. It is suitable for local interconnect networks such as Ethernet and USB, memory card readers, and I/O systems.

Working Principle

The SN75462P device contains two drivers, two receivers and one transceiver, arranged in a differential configuration. The drivers provide the interface between the two voltage domains and the receiver provides the voltage level detection. The transceiver is used to detect the input voltage levels and determine which level is valid. The circuit includes comparator logic, an active pull-up resistor, and a feedback cell which is used to maintain the output voltage level. The device is designed such that the output voltage is held stable when the input voltage is changing, thus allowing for maximum flexibility in the design of the interface.