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MC14XXXBCP データシート(PDF) 1 Page - Motorola, Inc |
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MC14XXXBCP データシート(HTML) 1 Page - Motorola, Inc |
1 / 8 page MOTOROLA CMOS LOGIC DATA 1 MC14521B 24-Stage Frequency Divider The MC14521B consists of a chain of 24 flip–flops with an input circuit that allows three modes of operation. The input will function as a crystal oscillator, an RC oscillator, or as an input buffer for an external oscillator. Each flip–flop divides the frequency of the previous flip–flop by two, consequently this part will count up to 224 = 16,777,216. The count advances on the negative going edge of the clock. The outputs of the last seven–stages are available for added flexibility. • All Stages are Resettable • Reset Disables the RC Oscillator for Low Standby Power Drain • RC and Crystal Oscillator Outputs Are Capable of Driving External Loads • Test Mode to Reduce Test Time • VDD′ and VSS′ Pins Brought Out on Crystal Oscillator Inverter to Allow the Connection of External Resistors for Low–Power Operation • Supply Voltage Range = 3.0 Vdc to 18 Vdc • 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 Parameter Value Unit VDD DC Supply Voltage – 0.5 to + 18.0 V Vin, Vout Input or Output Voltage (DC or Transient) – 0.5 to VDD + 0.5 V Iin, Iout Input or Output Current (DC or Transient), per Pin ± 10 mA PD Power Dissipation, per Package† 500 mW Tstg Storage Temperature – 65 to + 150 _C TL Lead Temperature (8–Second Soldering) 260 _C * Maximum Ratings are those values beyond which damage to the device may occur. †Temperature Derating: Plastic “P and D/DW” Packages: – 7.0 mW/ _C From 65_C To 125_C Ceramic “L” Packages: – 12 mW/ _C From 100_C To 125_C BLOCK DIAGRAM Output Count Capacity Q18 218 = 262,144 Q19 219 = 524,288 Q20 220 = 1,048,576 Q21 221 = 2,097,152 Q22 222 = 4,194,304 Q23 223 = 8,388,608 Q24 224 = 16,777,216 STAGES 18 THRU 24 STAGES 1 THRU 17 Q18 Q19 Q20 Q21 Q22 Q23 Q24 10 11 12 13 14 15 1 2 6 IN 2 9 IN 1 7 RESET VDD = PIN 16 VSS = PIN 8 5 3 4 OUT 1 VDD′ VSS′ OUT2 MOTOROLA SEMICONDUCTOR TECHNICAL DATA © Motorola, Inc. 1995 REV 3 1/94 MC14520B See Page 6-292 MC14521B L SUFFIX CERAMIC CASE 620 ORDERING INFORMATION MC14XXXBCP Plastic MC14XXXBCL Ceramic MC14XXXBD SOIC TA = – 55° to 125°C for all packages. P SUFFIX PLASTIC CASE 648 D SUFFIX SOIC CASE 751B PIN ASSIGNMENT 13 14 15 16 9 10 11 12 5 4 3 2 1 8 7 6 Q20 Q21 Q22 VDD IN 1 Q18 Q19 OUT 2 VSS′ RESET Q24 VSS OUT 1 IN 2 VDD′ Q23 |
同様の部品番号 - MC14XXXBCP |
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同様の説明 - MC14XXXBCP |
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