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This literature is subject to all applicable copyright laws and is not for resale in any manner.74VHC393 Dual 4-Bit Binary Counter December 2007 74VHC393 Dual 4-Bit Binary Counter Features General Description High Speed: f = 170MHz (Typ.) at T = 25C The VHC393 is an advanced high speed CMOS 4-bit MAX A Binary Counter fabricated with silicon gate CMOS tech- Low power dissipation: I = 4A (Max.) at T = 25C CC A nology. It achieves the high speed operation similar to High noise immunity: V = V = 28% V (Min.) NIH NIL CC equivalent Bipolar Schottky TTL while maintaining the Power down protection is provided on all inputs CMOS low power dissipation. It contains two indepen- Pin and function compatible with 74HC393 dent counter circuits in one package, so that counting or frequency division of 8 binary bits can be achieved with one IC. This device changes state on the negative going transition of the CLOCK pulse. The counter can be reset to 0 (Q Q = L) by a HIGH at the CLEAR input 0 3 regardless of other inputs. An input protection circuit ensures that 0V to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mis- matched supply and input voltages. Ordering Information Package Order Number Number Package Description 74VHC393M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74VHC393SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74VHC393MTC MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Device also available in Tape and Reel. Specify by appending suffix letter X to the ordering number. All packages are lead free per JEDEC: J-STD-020B standard. 1998 Fairchild Semiconductor Corporation www.fairchildsemi.com 74VHC393 Rev. 1.5.0