CD40194B CMOS 4-Bit Bidirectional Universal Shift Register |

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CMOS 4-Bit Bidirectional Universal Shift Register

CMOS 4-Bit Bidirectional Universal Shift Register - CD40194B


CD40194B is a universal shift register featuring parallel inputs, parallel outputs SHIFT RIGHT and SHIFT LEFT serial inputs, and a direct overriding clear input. In the parallel-load mode (S0 and S1 are high), data is loaded into the associated flip-flop and appears at the output after the positive transition of the CLOCK input. During loading, serial data flow is inhibited. Shift right and shift left are accomplished synchronously on the positive clock edge with data entered at the SHIFT RIGHT and SHIFT LEFT serial inputs, respectively. Clocking of the register is inhibited when both mode control inputs are low. When low, the RESET\ input resets all stages and forces all outputs low.

The CD40194B 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).


  • Medium-speed: fCL = 12 MHz (typ.) @ VDD = 10 V
  • Fully static operation
  • Synchronous parallel or serial operation
  • Asynchronous master reset
  • Standardized, symmetrical output characteristics
  • 5-V, 10-V, and 15-V parametric ratings
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
  • Applications
    • Arithmetic unit bus registers
    • Serial/parallel conversions
    • General-purpose register for bus-organized systems
    • General-purpose registers



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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) 3-state output Rating Operating temperature range (C)
CD40194B Order now CD4000     3     18     10     8     0.3     200     1.5     -1.5     No     Catalog     -55 to 125