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This literature is subject to all applicable copyright laws and is not for resale in any manner.74VHCT574A Octal D-Type Flip-Flop with 3-STATE Outputs July 1997 Revised April 2005 74VHCT574A Octal D-Type Flip-Flop with 3-STATE Outputs General Description Features The VHCT574A is an advanced high speed CMOS octal High speed: f 140 MHz (typ) at T 25qC MAX A flip-flop with 3-STATE output fabricated with silicon gate Power Down Protection is provided on all inputs and CMOS technology. It achieves the high speed operation outputs. similar to equivalent Bipolar Schottky TTL while maintain- Low Noise: V 1.6V (max) OLP ing the CMOS low power dissipation. This 8-bit D-type flip- flop is controlled by a clock input (CP) and an Output Low Power Dissipation: Enable input (OE). When the OE input is HIGH, the eight I 4 PA (max) T 25qC CC A outputs are in a high impedance state. Pin and Function Compatible with 74HCT574 Protection circuits ensure that 0V to 7V can be applied to the input and output (Note 1) pins without regard to the supply voltage. This device can be used to interface 3V to 5V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mis- matched supply and input voltages. Note 1: Outputs in OFF-State. Ordering Code: Order Number Package Number Package Description 74VHCT574AM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74VHCT574ASJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74VHCT574AMTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74VHCT574AN N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter X to the ordering code. Pb-Free package per JEDEC J-STD-020B. Logic Symbol Connection Diagram IEEE/IEC 2005 Fairchild Semiconductor Corporation DS500029 www.fairchildsemi.com