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MC74VHC595 Datasheet(PDF) 1 Page - Motorola, Inc |
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MC74VHC595 Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 9 page MOTOROLA SEMICONDUCTOR TECHNICAL DATA 1 REV 1 © Motorola, Inc. 1997 6/97 8-Bit Shift Register with Output Storage Register (3-State) The MC74VHC595 is an advanced high speed 8–bit shift register with an output storage register fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. The MC74VHC595 contains an 8–bit static shift register which feeds an 8–bit storage register. Shift operation is accomplished on the positive going transition of the Shift Clock input (SCK). The output register is loaded with the contents of the shift register on the positive going transition of the Register Clock input (RCK). Since the RCK and SCK signals are independent, parallel outputs can be held stable during the shift operation. And, since the parallel outputs are 3–state, the VHC595 can be directly connected to an 8–bit bus. This register can be used in serial–to–parallel conversion, data receivers, etc. The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7V, allowing the interface of 5V systems to 3V systems. • High Speed: fmax = 185MHz (Typ) at VCC = 5V • Low Power Dissipation: ICC = 4µA (Max) at TA = 25°C • High Noise Immunity: VNIH = VNIL = 28% VCC • Power Down Protection Provided on Inputs • Balanced Propagation Delays • Designed for 2V to 5.5V Operating Range • Low Noise: VOLP = 1.0V (Max) • Pin and Function Compatible with Other Standard Logic Families • Latchup Performance Exceeds 300mA • ESD Performance: HBM > 2000V; Machine Model > 200V • Chip Complexity: 328 FETs or 82 Equivalent Gates LOGIC DIAGRAM SERIAL DATA INPUT 14 11 10 12 13 SCK SCLR RCK OE SHIFT REGISTER STORAGE REGISTER 15 1 2 3 4 5 6 7 9 QA QB QC QD QE QF QG QH SQH SI PARALLEL DATA OUTPUTS SERIAL DATA OUTPUT MC74VHC595 PIN ASSIGNMENT 13 14 15 16 9 10 11 12 5 4 3 2 1 8 7 6 RCK OE SI QA VCC SQH SCLR SCK QE QD QC QB GND QH QG QF D SUFFIX 16–LEAD SOIC PACKAGE CASE 751B–05 DT SUFFIX 16–LEAD TSSOP PACKAGE CASE 948F–01 ORDERING INFORMATION MC74VHCXXXD MC74VHCXXXDT MC74VHCXXXM SOIC TSSOP SOIC EIAJ M SUFFIX 16–LEAD SOIC EIAJ PACKAGE CASE 966–01 |
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