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This literature is subject to all applicable copyright laws and is not for resale in any manner.74LCX16543 Low Voltage 16-Bit Registered Transceiver with 5V Tolerant Inputs and Outputs May 1995 Revised April 2001 74LCX16543 Low Voltage 16-Bit Registered Transceiver with 5V Tolerant Inputs and Outputs General Description Features The LCX16543 contains sixteen non-inverting transceivers 5V tolerant inputs and outputs containing two sets of D-type registers for temporary stor- 2.3V3.6V V specifications provided CC age of data flowing in either direction. Each byte has sepa- 5.2 ns t max (V = 3.3V), 20 A I max PD CC CC rate control inputs which can be shorted together for full 16-bit operation. Separate Latch Enable and Output Power down high impedance inputs and outputs Enable inputs are provided for each register to permit inde- Supports live insertion/withdrawal (Note 1) pendent input and output control in either direction of data 24 mA Output Drive (V = 3.0V) CC flow. Implements patented noise/EMI reduction circuitry The LCX16543 is designed for low voltage (2.5V or 3.3V) Latch-up performance exceeds 500 mA V applications with capability of interfacing to a 5V signal CC environment. ESD performance: Human Body Model > 2000V The LCX16543 is fabricated with an advanced CMOS tech- nology to achieve high speed operation while maintaining Machine Model > 200V CMOS low power dissipation. Note 1: To ensure the high-impedance state during power up or down, OE should be tied to V through a pull-up resistor: the minimum value or the CC resistor is determined by the current-sourcing capability of the driver. Ordering Code: Order Number Package Number Package Description 74LCX16543MEA MS56A 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide 74LCX16543MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter X to the ordering code. Connection Diagram Logic Symbol 2001 Fairchild Semiconductor Corporation DS012464 www.fairchildsemi.com