CD4557-1-to-64 stage variable length shift register

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CD4557 belongs to 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors.CD4557 has 1-to-64 stage variable length shift register

CD4557 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

CD4557 Features

  • High-Voltage Types (20V Rating)
  • Propagation Delay Time = 60ns (Typ.) at CL = 50pF, VDD = 10V
  • Buffered Inputs and Outputs
  • Standard Symmetrical Output Characteristics
  • 100% Tested for Maximum Quiescent Current at 20V
  • 5V, 10V, and 15V Parametric Ratings

CD4557 Specifications

Absolute Maximum Ratings

  • DC Supply Voltage Range, (VDD): -0.5V to +20V (Voltage Referenced to VSS Terminals)
  • Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
  • DC Input Current, Any One Input: ±10mA
  • Operating Temperature Range: -55oC to +125oC Package Types D, F, K, H
  • Storage Temperature Range (TSTG): -65oC to +150oC
  • Lead Temperature (During Soldering): +265oC
    • At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum

CD4557 Pinout Diagram

CD4557 Pin Description

Pin NoPin NameDescription
1L2Bit-length control input 2
2L1Bit-length control input 1
3MRAsynchronous Master Reset
4CP0Clock Input
5CP1′Clock Enable Input
6DBData Input B
7DA Data Input A
8VSSSupply Voltage
9A/B’Select Data Input
10OBuffered Output
11O’Invert Buffered Output
12L32Bit-length control input 32
13L16Bit-length control input 16
14L8Bit-length control input 8
15L4Bit-length control input 4
16VDDDrain Voltage

CD4557 Circuit

Applications

  • The shift registers are used for temporary data storage.
  • The shift registers are also used for data transfer and data manipulation.

CD4557 Alternative Equivalent

CD4021, CD4094

Download CD4557-1-to-64 stage variable length shift register Datasheet from the link given below.