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CD4527B-CMOS BCD 比率乘法器
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TI产品 - CD4527B介绍

CD4527B - CMOS BCD 比率乘法器

CD4527B是TI德州仪器公司的一款比率乘法器/分频器/定时器产品，CD4527B是CMOS BCD 比率乘法器，本站介绍了CD4527B的封装应用图解、特点和优点、功能等，并给出了与CD4527B相关的TI元器件型号供参考。

CD4527B - CMOS BCD 比率乘法器 - 比率乘法器/分频器/定时器 - 特殊逻辑 - 德州仪器

产品描述

CD4527B is a low-power 4-bit digital rate multiplier that provides an output-pulse rate which is the clock-input-pulse rate multiplied by 1/10 times the BCD input. For example, when the BCD input is 8, there will be 8 output pulses for every 10 input pulses. This device may be used to perform arithmetic operations (add, subtract, divide, raise to a power), solve algebraic and differential equations, generate natural logarithms and trigonometric functions, A/D and D/A conversion, and frequency division.

For fractional multipliers with more than one digit, CD4527B devices may be cascaded in two different modes: the Add mode and the Multiply mode. (See Figs. 12 and 15). In the Add Mode,

Output Rate = (Clock Rate) [0.1 BCD1 + 0.01 BCD2 + 0.001 BCD3 + . . . ]

In the Multiply mode, the fraction programmed into the first rate multiplier is multiplied by the fraction programmed into the second one,

9 4 36 e.g. — × — = — or 36 output 10 10 100

pulses for every 100 clock input pulses.

The CD4527B types are supplied in 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

产品特性

  • Cascadable in multiples of 4-bits
  • Set to "9" input and "9" detect output
  • 100% test for quiescent current at 20 V
  • 5-V, 10-V, and 15-V parametric ratings
  • Standardized, symmetrical output characteristics
  • Maximum input current of 1 µA at 18 V over full package-temperature range; 100nA at 18V and 25°C
  • Noise margin (full package-temperature range)= 1 V at VDD = 5 V 2 V at VDD = 10 V 2.5 V at VDD = 15 V
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
  • Applications
    • Numerical control
    • Instrumentation
    • Digital filtering
    • Frequency synthesis

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