16-line TTL multiplexer for legacy bus selection
The DM54150W/883 is a 16-line input TTL multiplexer from Texas Instruments, built on the 54-series logic family with the full military-temperature qualification implied by the 883 suffix. It selects one of sixteen data lines and routes it to a single output under the control of a four-bit address — a classic data selector for parallel-to-serial conversion or wide bus arbitration in high-reliability systems.
Active production — date-code traceability matters
The part is RoHS non-compliant, which is typical for 883-screened mil-temp logic that uses lead-bearing solder dip or tin-lead finish. A buyer specifying lead-free assembly must validate the finish compatibility with their reflow profile, not assume a drop-in. Bulk packaging means the parts ship in tubes or trays, not tape-and-reel — the rework lab tech should expect a tube feed for through-hole or a tray for any surface-mount variant, not a pocket reel.
What does not cross-reference — DS90CP22 and 74LS348
Neither the DS90CP22MT/NOPB (a 1 x 2:2 crosspoint switch) nor the SN74LS348N (a 1 x 8:3 priority encoder) is a functional replacement for the DM54150W/883. The DS90CP22 is a differential crosspoint with a different pinout and supply voltage; the 74LS348 encodes eight inputs to three bits, not sixteen to one. Neither drops into a board laid out for the 16-line TTL mux without a schematic change.
Sourcing posture for the BOM line
Because the part is active and carries a military-temp 883 designation, lot traceability and date-code consistency are verified before shipment — the laser etch and marking font are checked against TI's plant records for the reported date code.