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MC14520B

Part Number	MC14520B
Manufacturer	Motorola
Description	DUAL UP COUNTERS
Published	Dec 8, 2005
Detailed Description	MOTOROLA SEMICONDUCTOR TECHNICAL DATA Dual Up Counters The MC14518B dual BCD counter and the MC14520B dual binary coun...
Datasheet	MC14520B PDF File

Overview

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Dual Up Counters The MC14518B dual BCD counter and the MC14520B dual binary counter are constructed with MOS P–channel and N–channel enhancement mode devices in a single monolithic structure.
Each consists of two identical, independent, internally synchronous 4–stage counters.
The counter stages are type D flip–flops, with interchangeable Clock and Enable lines for incrementing on either the positive–going or negative–going transition as required when cascading multiple stages.
Each counter can be cleared by applying a high level on the Reset line.
In addition, the MC14518B will count out of all undefined states within two clock periods.
These complementary MOS up counters find primary use in multi–stage synchronous or ripple counting applications requiring low power dissipation and/or high noise immunity.
• • • • Diode Protection on All Inputs Supply Voltage Range = 3.
0 Vdc to 18 Vdc Internally Synchronous for High Internal and External Speeds Logic Edge–Clocked Design — Incremented on Positive Transition of Clock or Negative Transition on Enable • Capable of Driving Two Low–power TTL Loads or One Low–power Schottky TTL Load Over the Rated Temperature Range MAXIMUM RATINGS* (Voltages Referenced to VSS) Symbol VDD Vin, Vout Iin, Iout PD Tstg TL Parameter DC Supply Voltage Input or Output Voltage (DC or Transient) Input or Output Current (DC or Transient), per Pin Power Dissipation, per Package† Storage Temperature Lead Temperature (8–Second Soldering) MC14518B MC14520B L SUFFIX CERAMIC CASE 620 P SUFFIX PLASTIC CASE 648 DW SUFFIX SOIC CASE 751G ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Value Unit V V mA mW – 0.
5 to + 18.
0 0.
5 to VDD + 0.
5 ± 10 500 – 65 to + 150 260 ORDERING INFORMATION MC14XXXBCP MC14XXXBCL MC14XXXBDW Plastic Ceramic SOIC TA = – 55° to 125°C for all packages.
BLOCK DIAGRAM CLOCK 1 2 ENABLE 7 CLOCK 9 10 ENABLE 15 VDD = PIN 16 VSS = PIN 8 C R Q0 Q1 Q2 Q3 11 12 13 14 C R Q0 Q1 Q2 Q3...

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