The Texas Instruments SN74LS194AN is a 4-bit bidirectional universal shift register from the 74LS low-power Schottky logic family. It can shift data left or right, load parallel data, or hold its state — all controlled by two mode-select pins. Typical applications include serial-to-parallel data conversion, digital delay lines, and state registers in 5V TTL-based control systems, industrial logic controllers, and legacy test equipment.
SN74LS194AN 74LS Bidirectional Shift Register, 16-DIP
MPNSN74LS194AN
End of Life
Texas Instruments 74LS series, SN74LS194AN, Bidirectional Universal Shift Register, 4-bit, Push-Pull Output, 4.75V ~ 5.25V Supply, 0°C ~ 70°C, 16-DIP Through Hole.
$1.96Ref. price · indicative, final on quote
Packaging16-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74LS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | 74LS |
| Logic type | Register, Bidirectional |
| Output type | Push-Pull |
| Mounting | Through Hole |
| Supply voltage | 4.75V ~ 5.25V |
| Operating temperature | 0°C ~ 70°C |
| Package | Tube |
| Function | Universal |
| Case | 16-DIP (0.300\", 7.62mm) |
| Number of elements | 1 |
| Number of bits per element | 4 |
Product details
Frequently asked questions
What is the function of the SN74LS194AN?
It is a 4-bit bidirectional universal shift register. It is used for serial-to-parallel conversion, digital delay, and state storage in 5V TTL logic systems.
What are the alternatives for the SN74LS194AN?
Within the 74LS family, the SN74LS194AN is the standard DIP version. A surface-mount alternative is the SN74LS194AD (SOIC-16), which shares the same logic function but in a smaller footprint for boards that avoid through-hole. Both are active parts from TI.