PCA8550D, 8550 series, Type Multiplexer, Circuit 1 x 4:4, Single Supply 3V ~ 3.6V, Surface Mount 16-SOIC (0.154", 3.90mm Width), Tube, 0°C ~ 70°C, Active lifecycle.
| Parameter | Value |
|---|---|
| Type | Multiplexer |
| Mounting | Surface Mount |
| Supply voltage | 3V ~ 3.6V |
| Voltage supply source | Single Supply |
| Current - output high, low | 2mA, 2mA |
| Operating temperature | 0°C ~ 70°C |
| Circuit | 1 x 4:4 |
| Package | Tube |
| Case | 16-SOIC (0.154\", 3.90mm Width) |
| Independent circuits | 1 |
The PCA8550D is a single-supply 4-line multiplexer from the 8550 series, packaged in a 16-SO (3.90 mm width) for surface-mount assembly. It switches one of four input lines to a single output — a 1 x 4:4 configuration — operating from a 3 V to 3.6 V rail. The output drive is rated at 2 mA high and low, suited for CMOS logic-level fan-out rather than high-current buses.
It remains a current-production part, available through the standard independent-distribution channel.
The DS90CP22MT/NOPB is a crosspoint switch, not a multiplexer — different circuit topology (1 x 2:2 vs 1 x 4:4) and a wider temperature range (-40°C to 85°C). It is not a pin-compatible or functional drop-in for the PCA8550D. No official second-source alternate is listed for this part.
Type: Multiplexer. Circuit: 1 x 4:4 — one 4-line input selector driving a single output.