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

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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.

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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 Name	Pin No.	Description
P1A	1	preset input 1A
P1B	2	preset input 1B
P1C	3	preset input 1C
P1D	4	preset input 1D
VCC	5	Chip Supply Voltage
PE1	6	Preset Enable pin 1
DS	7	Serial Data Pin
CLK	8	Clock Input
OUT	9	Output Pin
CLR	10	Clear pin
P2D	11	preset input 2D
GND	12	Ground Pin
P2C	13	preset input 2C
P2B	14	preset input 2B
PE2	15	Preset Enable pin 2
P2A	16	preset input 2A