Skip to main content
Log in
Texas Instruments SN74LS298N — Logic ICs

SN74LS298N Multiplexer, 4 x 2:1, 16-DIP, 74LS Family

MPNSN74LS298N
End of Life

Texas Instruments SN74LS298N, 74LS series, Multiplexer, 4 x 2:1, Single 4.75V to 5.25V supply, 0°C to 70°C, 16-DIP (0.300", 7.62mm) through-hole, 400µA / 8mA output drive.

$2.45Ref. price · indicative, final on quote
Texas Instruments SN74LS298N datasheet (PDF)
Packaging16-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74LS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LS298N specifications
ParameterValue
TypeMultiplexer
Series74LS
MountingThrough Hole
Supply voltage4.75V ~ 5.25V
Voltage supply sourceSingle Supply
Current - output high, low400µA, 8mA
Operating temperature0°C ~ 70°C
Circuit4 x 2:1
PackageTube
Case16-DIP (0.300\", 7.62mm)
Independent circuits1

Product details

4 x 2:1 multiplexer — 74LS logic, through-hole

The Texas Instruments SN74LS298N is a 4-bit, 2-input multiplexer from the 74LS Schottky TTL family. It selects one of two 4-bit data sources under control of a common select line, routing the chosen nibble to the output.

Output drive — 400 µA source, 8 mA sink

The output high current is rated at 400 µA and output low at 8 mA. That sink current is typical for the 74LS family and drives one standard LS load per output without external buffers. If you are interfacing to a higher-current load (LED, relay coil, or a bus with multiple fan-in), plan on a transistor or a line driver after the mux.

Frequently asked questions

What is the function of the SN74LS298N?

The SN74LS298N is a 4-bit, 2-input multiplexer. It selects one of two 4-bit data buses (A or B) based on a common select input and presents the chosen nibble at the output. The part contains one independent multiplexer circuit with four 2:1 channels.

What are the alternatives for the SN74LS298N?

A functional alternative within the same 74LS family is the SN74LS348N, but note that the SN74LS348N is a priority encoder (1 x 8:3), not a multiplexer — it serves a different logic function. For a true multiplexer replacement, look for other 74LS-series 4-bit 2:1 muxes in 16-DIP, such as the 74LS157 or 74LS158, which offer similar pinouts and logic levels.