74VCX164245 Datasheet | Fairchild Semiconductor

Description The VCX164245 is a dual supply, 16-bit translating transceiver that is designed for 2 way asynchronous munication between busses at different supply voltages by providing true signal translation. The supply rails consist of VCCB, which is the higher potential rail operating at 2.3 to 3.6V and VCCA, which is the lower potential rail operating at 1.65 to 2.7V. (VCCA must be less than or equal to VCCB for proper device operation.) This dual supply design allows for translation from 1.8V to 2.5V busses to busses at a higher potential, up to 3.3V. Features s Bidirectional interface between busses ranging from 1.65V to 3.6V s Supports Live Insertion and Withdrawal (Note 1) s Static Drive (IOH/IOL) ±24 m A @ 3.0V VCC ±18 m A @ 2.3V VCC ±6 m A @ 1.65V VCC s Uses patented noise/EMI reduction circuitry s Functionally patible with 74 series 16245 The Transmit/Receive (T/R) input determines the direction s Latchup performance exceeds 300 m A of data flow. Transmit (active-HIGH) enables data from A Ports to B Ports; Receive (active-LOW) enables data from s ESD performance: B Ports to A Ports.The Output Enable (OE) input, when Human Body Model >2000V HIGH, disables both A and P Ports by placing them in a Machine model >200V High-Z condition. The A Port interfaces with the lower voltage bus (1.8 - 2.5V); The B Port interfaces with the higher voltage bus (2.7 - 3.3V). Also the VCX164245 is designed . so that the control pins (T/Rn, OEn) are supplied by VCCB .. Note 1: To ensure the high impedance state during power The 74VCX164245 is suitable for mixed voltage applications such as notebook puters using a 1.8V CPU and 3.3V peripheral ponents. It is fabricated with an Advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. up or power down, OEn should be tied to VCCB through a pull up resistor. The minimum value of the resistor is determined by the current sourcing capability of the driver. Ordering Code: Order Number...