Part A
74HC153D
Toshiba Semiconductor and Storage
- Lifecycle
- Active
- Stock
- 5590 PCS
- Package
- SOIC-20
- Series
- Logic - Signal Switches, Multiplexers, Decoders
Replacement verdict
Not a drop-in replacement
The 74HC153D and 74HC154D,653 are not functionally interchangeable. The 74HC153D is a dual 4-to-1 multiplexer with two independent data selectors, while the 74HC154D,653 is a single 4-to-16 line decoder/demultiplexer. Their logic functions, input/output configurations, and pin assignments differ fundamentally, making direct substitution impossible without significant circuit redesign.
Different logic function
Different input/output configuration
Different pin assignment
Different channel count
Parts at a glance
Part B
74HC154D,653
NXP USA Inc.
- Lifecycle
- Active
- Stock
- 4133 PCS
- Package
- SOIC-24
- Series
- Logic - Signal Switches, Multiplexers, Decoders
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC153D | 74HC154D,653 | Why it matters |
|---|---|---|---|
| Function | Dual 4-input multiplexer | 4-to-16 line decoder/demultiplexer | These devices perform fundamentally different logic functions, so they are not functionally interchangeable in a circuit. |
| Number of Channels / Outputs | 2 multiplexer outputs | 16 decoder outputs | The output count determines how many signals can be selected or addressed, directly affecting circuit architecture. |
| Number of Select/Address Inputs | 2 select inputs (shared per multiplexer) | 4 address inputs | The number of select/address lines defines the selection range and how the device is controlled by upstream logic. |
| Logic Family | 74HC (high-speed CMOS) | 74HC (high-speed CMOS) | Matching logic families ensures compatible voltage thresholds and switching characteristics. |
| Supply Voltage Range | 2 V to 6 V | 2 V to 6 V | The supply range must match the system rail to guarantee correct operation and logic-level compatibility. |
| Package | SO16 (SOIC-16) | SO24 (SOIC-24) | Different package footprints and pin counts prevent direct drop-in replacement on the same PCB pad layout. |
| Pin Count | 16 | 24 | Pin count affects board layout, routing, and whether the parts can share a common footprint. |
| Output Type | Push-pull (standard CMOS) | Active-low decoder outputs | Output polarity and drive style determine how downstream logic must interpret the signal. |
| Propagation Delay (typical) | Approximately 14 ns at 4.5 V | Approximately 20 ns at 4.5 V | Timing differences can affect setup/hold margins and maximum operating frequency in synchronous designs. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | The temperature range must cover the application environment for reliable long-term operation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC153D | 74HC154D,653 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | 74HC | 74HC |
| Part Status | Active | Active |
| Type | Multiplexer | Decoder/Demultiplexer |
| Circuit | 2 x 4:1 | 1 x 4:16 |
| Independent Circuits | 2 | 1 |
| Current - Output High Low | 5.2mA, 5.2mA | 5.2mA, 5.2mA |
| Voltage Supply Source | Single Supply | Single Supply |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the 74HC153D and the 74HC154D,653?
The 74HC153D is a dual 4-input multiplexer, meaning it contains two separate multiplexers that each select one of four data inputs based on two select lines. The 74HC154D,653 is a 4-to-16 line decoder/demultiplexer that decodes a 4-bit binary address into one of sixteen mutually exclusive active-low outputs. They serve different logic functions and are not functionally interchangeable.
Are the 74HC153D and 74HC154D,653 pin-compatible?
No. The 74HC153D is typically supplied in a 16-pin SOIC package, while the 74HC154D,653 is supplied in a 24-pin SOIC package. The pin counts, pin assignments, and package dimensions differ, so they cannot be used as drop-in replacements on the same PCB footprint.
What are the supply voltage and logic family specifications for both devices?
Both devices belong to the 74HC high-speed CMOS logic family and operate over a supply voltage range of 2.0 V to 6.0 V. They feature typical CMOS low power consumption and are compatible with standard 74HC input and output voltage thresholds.
How many select or address inputs does each device have?
The 74HC153D has two select inputs (S0 and S1) that are shared between its two internal 4-input multiplexers. The 74HC154D,653 has four address inputs (A0, A1, A2, A3) used to select one of sixteen outputs.
What is the output configuration of each device?
The 74HC153D provides two separate outputs, one for each multiplexer, and both outputs are non-inverted. The 74HC154D,653 provides sixteen active-low outputs (Y0 through Y15), meaning the selected output goes LOW while all unselected outputs remain HIGH.
Can the 74HC154D,653 be used as a demultiplexer, and does the 74HC153D have a similar capability?
Yes, the 74HC154D,653 can function as a 1-to-16 demultiplexer when one of its enable inputs is used as the data input and the address inputs select the output. The 74HC153D is a multiplexer only and does not provide a demultiplexer function.
What are the enable or strobe input characteristics of each device?
The 74HC153D has two active-low enable inputs (Ea and Eb), one for each multiplexer, allowing independent control of each section. The 74HC154D,653 has two active-low enable inputs (E1 and E2) that must both be LOW to enable the device; if either is HIGH, all sixteen outputs remain HIGH.
Which device is more suitable for expanding I/O lines in a microcontroller system?
The 74HC154D,653 is typically used for address decoding or expanding outputs, as it can activate one of sixteen lines from a 4-bit address. The 74HC153D is used for data selection, routing one of four inputs to a single output per multiplexer, making it suitable for signal selection rather than I/O expansion.