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Technology family TTL Operating temperature range (°C) -55 to 125 Rating Military
Technology family TTL Operating temperature range (°C) -55 to 125 Rating Military
CDIP (J) 14 130.4652 mm² 19.56 x 6.67
  • Performs BCD, Bi-Quinary, or Binary Counting
  • Fully Programmable
  • Fully Independent Clear Input
  • Input Clamping Diodes Simplify System Design
  • Output QA Maintains Full Fan-out Capability In Addition to Driving Clock-2 Input

  • Performs BCD, Bi-Quinary, or Binary Counting
  • Fully Programmable
  • Fully Independent Clear Input
  • Input Clamping Diodes Simplify System Design
  • Output QA Maintains Full Fan-out Capability In Addition to Driving Clock-2 Input

These high-speed monolithic counters consist of four d-c coupled, master-slave flip-flops, which are internally interconnected to provide either a divide-by-two and a divide-by-five counter (’196, ’LS196, ’S196) or a divide-by-two and a divide-by-eight counter (’197, ’LS197, ’S197). These four counters are fully programmable; that is, the outputs may be preset to any state by placing a low on the count/load input and entering the desired data at the data inputs. The outputs will change to agree with the data inputs independent of the state of the clocks.

During the count operation, transfer of information to the outputs occurs on the negative-going edge of the clock pulse. These counters feature a direct clear which when taken low sets all outputs low regardless of the states of the clocks.

These counters may also be used as 4-bit latches by using the count/load input as the strobe and entering data at the data inputs. The outputs will directly follow the data inputs when the count/load is low, but will remain unchanged when the count/load is high and the clock inputs are inactive.

All inputs are diode-clamped to minimize transmission-line effects and simplify system design. These circuits are compatible with most TTL logic families. Series 54, 54LS, and 54S circuits are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74, 74LS, and 74S circuits are characterized for operation from 0°C to 70°C.

These high-speed monolithic counters consist of four d-c coupled, master-slave flip-flops, which are internally interconnected to provide either a divide-by-two and a divide-by-five counter (’196, ’LS196, ’S196) or a divide-by-two and a divide-by-eight counter (’197, ’LS197, ’S197). These four counters are fully programmable; that is, the outputs may be preset to any state by placing a low on the count/load input and entering the desired data at the data inputs. The outputs will change to agree with the data inputs independent of the state of the clocks.

During the count operation, transfer of information to the outputs occurs on the negative-going edge of the clock pulse. These counters feature a direct clear which when taken low sets all outputs low regardless of the states of the clocks.

These counters may also be used as 4-bit latches by using the count/load input as the strobe and entering data at the data inputs. The outputs will directly follow the data inputs when the count/load is low, but will remain unchanged when the count/load is high and the clock inputs are inactive.

All inputs are diode-clamped to minimize transmission-line effects and simplify system design. These circuits are compatible with most TTL logic families. Series 54, 54LS, and 54S circuits are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74, 74LS, and 74S circuits are characterized for operation from 0°C to 70°C.

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类型 标题 下载最新的英语版本 日期
* 数据表 50/30/100-MHz Presettable Decade Or Binary Counters/Latches 数据表 (Rev. A) 2008年 5月 14日
选择指南 Logic Guide (Rev. AB) 2017年 6月 12日
应用手册 Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 2015年 12月 2日
选择指南 逻辑器件指南 2014 (Rev. AA) 最新英语版本 (Rev.AB) 2014年 11月 17日
用户指南 LOGIC Pocket Data Book (Rev. B) 2007年 1月 16日
应用手册 Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 2004年 7月 8日
应用手册 使用逻辑器件进行设计 (Rev. C) 1997年 6月 1日
应用手册 Input and Output Characteristics of Digital Integrated Circuits 1996年 10月 1日
应用手册 Live Insertion 1996年 10月 1日

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CDIP (J) 14 查看选项

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包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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