74LS94 4-Bit Serial In-Out Shift Register IC – Datasheet

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74LS94 Dual 4-Bit 4-Bit Serial In-Out Shift Register IC is a part of the 74XXYY IC series. The 74LS94 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The IC 74LS94 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.

74ls94 ic

What is a Shift Register?

Shift registers are digital memory circuitry found in devices such as calculators, computers, and data processing systems. With the shift register, data or bits are entered into the system in a serial or parallel manner. data entry is done from one direction, and as more data is added, shift positions until they get to the output end. The two ends are referred to as the left and right end. Movement of data can be from left to right, from right to left, or in both directions to make a bidirectional register.

74LS94 Key Features & Specifications

  • Technology Family: LS
  • VCC (Min): 4.75V
  • VCC (Max): 5.25
  • Bits (#): 2
  • Operating Voltage (Nom): 5V
  • Frequency at normal voltage (Max): 35MHz
  • Propagation delay (Max): 35ns
  • IOL (Max): 16mA
  • IOH (Max):-0.4mA
  • Rating: Catalog
  • Available in 14-pin PDIP, GDIP, PDSO packages

74LS94 Pinout

Pin NamePin No.Description
P1A1preset input 1A
P1B2preset input 1B
P1C3preset input 1C
P1D4preset input 1D
VCC5Chip Supply Voltage
PE16Preset Enable pin 1
DS7Serial Data Pin
CLK8Clock Input
OUT9Output Pin
CLR10Clear pin
P2D11preset input 2D
GND12Ground Pin
P2C13preset input 2C
P2B14preset input 2B
PE215Preset Enable pin 2
P2A16preset input 2A
74ls94 pinout

Applications

The 74LS94 IC has a number applications, a few are listed below:

  • Used in expanding the GPIO pin on an MCU/MPU
  • LED Matrix/Cube Projects
  • Interface LCD
  • Cascading applications
  • High logic level controller 

74LS94 Datasheet

You can download the 4-Bit Serial In-Out Shift Register IC Datasheet from the link given below

See Also: 7404 NOT Gate IC | 74LS21 Dual 4 -Input AND Logic Gate IC | 74LS20 Dual 4 – Input NAND IC

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