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74VHC163N Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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74VHC163N Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 10 page © 2002 Fairchild Semiconductor Corporation DS012122 www.fairchildsemi.com September 1995 Revised February 2002 74VHC163 4-Bit Binary Counter with Synchronous Clear General Description The VHC163 is an advanced high-speed CMOS device fabricated with silicon gate CMOS technology. It achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissi- pation. The VHC163 is a high-speed synchronous modulo-16 binary counter. This device is synchronously presettable for application in programmable dividers and has two types of Count Enable inputs plus a Terminal Count output for ver- satility in forming multistage counters. The CLK input is active on the rising edge. Both PE and MR inputs are active on low logic level. Presetting is synchronous to rising edge of CLK and the Clear function of the VHC163 is syn- chronous to CLK. Two enable inputs (ENP and ENT) and Carry Output are provided to enable easy cascading of counters, which facilitates easy implementation of n-bit counters without using external gates. An input protection circuit insures that 0V to 7V can be applied to the input pins without regard to the supply volt- age. This device can be used to interface 5V to 3V systems and two supply systems such as battery backup. This cir- cuit prevents device destruction due to mismatched supply and input voltages. Features s High speed: fMAX = 185 MHz (typ) at VCC = 5V s Low power dissipation: ICC = 4 µA (max) at TA = 25°C s Synchronous counting and loading s High-speed synchronous expansion s High noise immunity: VNIH = VNIL = 28% VCC (min) s Power down protection is provided on all inputs. s Low noise: VOLP = 0.8V (max) s Pin and function compatible with 74HC163 Ordering Code: Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols IEEE/IEC Order Number Package Number Package Description 74VHC163M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow 74VHC163SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74VHC163MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74VHC163N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide |
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