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This literature is subject to all applicable copyright laws and is not for resale in any manner.74LCX16821 Low Voltage 20-Bit D-Type Flip-Flop with 5V Tolerant Inputs and Outputs January 1996 Revised April 1999 74LCX16821 Low Voltage 20-Bit D-Type Flip-Flop with 5V Tolerant Inputs and Outputs General Description Features The LCX16821 contains twenty non-inverting D-type flip- 5V tolerant inputs and outputs flops with 3-STATE outputs and is intended for bus oriented 2.3V3.6V V specifications provided CC applications. The device is designed for low voltage (2.5V 6.2 ns t max (V = 3.3V), 20 A I max PD CC CC or 3.3V) V applications with capability of interfacing to a CC Power down high impedance inputs and outputs 5V signal environment. Supports live insertion/withdrawal (Note 1) The LCX16821 is fabricated with an advanced CMOS tech- nology to achieve high speed operation while maintaining 24 mA output drive (V = 3.0V) CC CMOS low power dissipation. Implements patented noise/EMI reduction circuitry Latch-up performance exceeds 500 mA ESD performance: Human body model > 2000V Machine model > 200V 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 74LCX16821MEA MS56A 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide 74LCX16821MTD 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 suffix letter X to the ordering code. Logic Symbol Pin Descriptions Pin Names Description OE Output Enable Input (Active LOW) n CLK Clock Input n D D Inputs 0 19 O O Outputs 0 19 1999 Fairchild Semiconductor Corporation DS012634.prf www.fairchildsemi.com