Device Overview
Nexperia 74HC139D,653 is an exact-order dual 2-to-4 line decoder/demultiplexer supplied in SOIC-16. The main engineering checks for this variant are Device Function (dual 2-to-4 line decoder/demultiplexer), Supply Voltage (2.0 to 6.0 V), Decoder Count (2).
Selection-Critical Data
| Parameter | Confirmed Data | Why It Matters |
|---|---|---|
| Device Function | dual 2-to-4 line decoder/demultiplexer | Defines the device function or architecture that a compatible replacement must preserve before secondary ratings are compared. |
| Supply Voltage | 2.0 to 6.0 V (74HC family operating range) | Defines compatibility with the available board power rail and required bias range. |
| Decoder Count | 2 | Defines functional logic or signal-routing behavior; a substitute must preserve the required truth table, direction and control-state behavior. |
| Outputs | active-low mutually exclusive | Defines the output-state behavior and polarity that downstream logic must interpret correctly. |
| Exact Package | SOIC-16 | Determines PCB footprint, pinout, mechanical assembly and orderable-variant compatibility. |
| Enable Behavior | independent enable per decoder | Defines functional logic or signal-routing behavior; a substitute must preserve the required truth table, direction and control-state behavior. |
Logic and Interface Selection Notes
dual 2-to-4 line decoder/demultiplexer is the stated device function value. Defines the device function or architecture that a compatible replacement must preserve before secondary ratings are compared. The enable behavior is independent enable per decoder; this defines functional logic or signal-routing behavior; a substitute must preserve the required truth table, direction and control-state behavior.
The supply voltage is 2.0 to 6.0 V; this defines compatibility with the available board power rail and required bias range. Technical condition: 74HC family operating range.
Exact Package is SOIC-16. Determines PCB footprint, pinout, mechanical assembly and orderable-variant compatibility.
2 is the stated decoder count value. Defines functional logic or signal-routing behavior; a substitute must preserve the required truth table, direction and control-state behavior. Outputs is active-low mutually exclusive. Defines the output-state behavior and polarity that downstream logic must interpret correctly.
