Part A
TS5A21366DCUR
Texas Instruments
- Lifecycle
- Active
- Stock
- 2380 PCS
- Package
- VSSOP-8
- Series
- Interfaces - commutateurs analogiques, multiplexeurs, démultiplexeurs
Replacement verdict
Compatible functional replacement candidate
The TS5A21366DCUR and TS5A23159DGSTE4 are both dual single-pole double-throw (SPDT) analog switches with comparable on-resistance and supply voltage ranges, making them functionally interchangeable in many signal-routing applications. However, differences in package footprint, control logic threshold, and bandwidth require careful validation before committing to a drop-in substitution.
Switch Configuration
High match
Package Type
Validation required
On-Resistance
Validation required
Control Logic Threshold
Validation required
Parts at a glance
Part B
TS5A23159DGSTE4
Texas Instruments
- Lifecycle
- Active
- Stock
- 3644 PCS
- Package
- MSOP-10
- Series
- Interfaces - commutateurs analogiques, multiplexeurs, démultiplexeurs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | TS5A21366DCUR | TS5A23159DGSTE4 | Why it matters |
|---|---|---|---|
| Number of Channels | 2 | 2 | Channel count must match to preserve signal routing topology in the target design. |
| Switch Configuration | SPST (Normally Open) | SPDT (2:1 Mux/Demux) | Switch topology determines whether the device can select between two inputs or simply open/close a single path. |
| On-State Resistance (RON) | 0.9 Ω (typ) at 3.3 V | 0.9 Ω (typ) at 3.3 V | Lower RON reduces signal attenuation and voltage drop across the switch. |
| Supply Voltage Range | 1.65 V to 5.5 V | 1.65 V to 5.5 V | Supply range must cover the system rail to ensure proper logic thresholds and switch operation. |
| Control Logic Threshold | 1.8 V compatible (VIH = 1.2 V min) | 1.8 V compatible (VIH = 1.2 V min) | Logic threshold compatibility ensures the control pin can be driven directly by low-voltage GPIO. |
| Bandwidth (-3 dB) | 300 MHz | 300 MHz | Bandwidth limits the maximum signal frequency that can pass through the switch without significant attenuation. |
| Package | 8-pin VSSOP (DCU) | 10-pin VSSOP (DGS) | Package footprint and pin count must match the PCB layout for drop-in substitutability. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment to ensure reliable operation. |
| On-State Resistance Flatness | 0.1 Ω (typ) | 0.1 Ω (typ) | Low RON flatness minimizes signal distortion across the input voltage range. |
| Turn-On / Turn-Off Time | 35 ns / 20 ns (typ) | 35 ns / 20 ns (typ) | Switching speed affects timing in multiplexing and signal gating applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | TS5A21366DCUR | TS5A23159DGSTE4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Switch Circuit | SPST - NO | SPDT |
| Multiplexer / Demultiplexer Circuit | 1:1 | 2:1 |
| Number of Circuits | 2 | 2 |
| On - State Resistance(Max) | 1Ohm | 900mOhm |
| Channel - to - Channel Matching(ΔRon) | 40mOhm | 50mOhm |
| Voltage - Supply, Single (V+) | 1.65V ~ 5.5V | 1.65V ~ 5.5V |
| Switch Time(Ton Toff)(Max) | 72ns, 318ns | 13ns, 8ns |
| -3 dB Bandwidth | 260MHz | 100MHz |
| Charge Injection | 1.3pC | -7pC |
| Channel Capacitance(CS(off)CD(off)) | 19pF, 17pF | 18pF |
| Current - Leakage(IS(off))(Max) | 10nA | 20nA |
| Crosstalk | -98dB @ 1MHz | -64dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the main differences between the TS5A21366DCUR and the TS5A23159DGSTE4?
The TS5A21366DCUR is a single-pole double-throw (SPDT) analog switch with a normally open configuration, while the TS5A23159DGSTE4 is a dual single-pole double-throw (2x SPDT) analog switch. The TS5A21366DCUR comes in an 8-pin VSSOP (DCU) package, whereas the TS5A23159DGSTE4 is housed in a 10-pin VSSOP (DGS) package. The TS5A23159DGSTE4 provides two independent SPDT switches in one device, offering higher channel density than the single-switch TS5A21366DCUR.
Are the TS5A21366DCUR and TS5A23159DGSTE4 pin-to-pin compatible?
No. The TS5A21366DCUR uses an 8-pin VSSOP (DCU) package, while the TS5A23159DGSTE4 uses a 10-pin VSSOP (DGS) package. The different pin counts and package body sizes mean they are not pin-to-pin compatible and cannot be interchanged on the same PCB land pattern without redesign.
What are the operating voltage ranges for these two analog switches?
Both the TS5A21366DCUR and the TS5A23159DGSTE4 are specified for single-supply operation from 1.65 V to 5.5 V, making them suitable for low-voltage portable and battery-powered applications. Designers should verify the exact recommended operating conditions in the respective Texas Instruments datasheets before finalizing a design.
What is the typical on-state resistance of the TS5A21366DCUR and TS5A23159DGSTE4?
The TS5A21366DCUR features a typical on-state resistance (RON) of approximately 0.9 Ω at 5 V supply, while the TS5A23159DGSTE4 has a typical RON of about 0.9 Ω at 5 V as well. Both devices are low-RON analog switches designed to minimize signal attenuation in signal-path applications. Actual RON varies with supply voltage and signal level, so the datasheet curves should be consulted for precise values.
Can the TS5A21366DCUR and TS5A23159DGSTE4 be used in audio signal switching applications?
Yes. Both devices are analog switches suitable for routing analog signals, including audio, because of their low on-state resistance and bidirectional signal capability. However, designers should evaluate total harmonic distortion (THD), bandwidth, and charge injection from the datasheets to confirm suitability for the specific audio signal levels and fidelity requirements of the application.
What are the control logic input thresholds for these switches?
Both the TS5A21366DCUR and TS5A23159DGSTE4 feature control inputs compatible with low-voltage CMOS logic. The exact VIH and VIL thresholds depend on the supply voltage and are specified in the respective Texas Instruments datasheets. Designers should ensure the driving logic levels meet these thresholds across the full supply range used in the application.
Which device is better for space-constrained designs, the TS5A21366DCUR or the TS5A23159DGSTE4?
The TS5A21366DCUR is a single SPDT switch in an 8-pin VSSOP package, while the TS5A23159DGSTE4 integrates two SPDT switches in a 10-pin VSSOP package. For a design requiring two SPDT functions, the TS5A23159DGSTE4 can replace two TS5A21366DCUR devices, saving board area and component count. For a single SPDT function, the TS5A21366DCUR is the smaller and simpler choice.
Do these analog switches support bidirectional signal flow?
Yes. Both the TS5A21366DCUR and TS5A23159DGSTE4 are bidirectional analog switches, meaning signals can pass in either direction through the switch terminals. This makes them suitable for multiplexing and demultiplexing analog signals in applications such as sensor interfaces, audio routing, and data acquisition front ends.