- Description
- Features
- Diagram
- Parametrics
- Applications for you
- Complete your design

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 BCD_{1} + 0.01 BCD_{2} + | 0.001 BCD_{3} + . . . ] |

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).

- 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 V_{DD}= 5 V

2 V at V_{DD}= 10 V

2.5 V at V_{DD}= 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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Technology Family |

VCC (Min) (V) |

VCC (Max) (V) |

Bits (#) |

Voltage (Nom) (V) |

F @ Nom Voltage (Max) (Mhz) |

ICC @ Nom Voltage (Max) (mA) |

tpd @ Nom Voltage (Max) (ns) |

IOL (Max) (mA) |

IOH (Max) (mA) |

Operating Temperature Range (C) |

Schmitt Trigger |

Package Group |

CD4527B |
---|

CD4000 |

3 |

18 |

4 |

10 |

8 |

0.3 |

290 |

4 |

-4 |

-55 to 125 |

No |

PDIP | 16
SO | 16 TSSOP | 16 |

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