TS5A3159DBVR - 1.1Ω SPDT Analog Switch SOT-23-6 | Texas Instruments
MPN: TS5A3159DBVR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.38 | $3.80 |
| 100 | $0.32 | $32.00 |
| 500 | $0.32 | $160.00 |
| 1,000 | $0.28 | $280.00 |
Drop-in alternatives for TS5A3159DBVR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TS5A3159ADBVR
✅ Drop-In📋 Reference alternative (not in catalog)
TS5A3159QDBVRQ1
✅ Drop-In✓ In Stock
$0.31 / Unit
View Datasheet →TS5A3159DBVT
✅ Drop-In📋 Reference alternative (not in catalog)
NC7SB3157P6X
✅ Drop-In📋 Reference alternative (not in catalog)
SN74LVC1G3157DBVR
✅ Drop-In📋 Reference alternative (not in catalog)
TS5A3159DBVR Maximum Ratings & Electrical Characteristics
| Function | 1-channel SPDT (2:1) analog switch |
| ON-State Resistance (Ron) | 1.1 Ω typical / 2.5 Ω maximum |
| Supply Voltage Range | 1.65 V to 5.5 V |
| Select Pin Overvoltage Tolerance | Up to 7 V |
| Turn-On Time (tON) | 70 ns |
| Turn-Off Time (tOFF) | 40 ns |
| Isolation | 64 dB |
| Switching Feature | Break-before-make |
| Architecture | CMOS transmission gate, bidirectional |
| Control Input Type | Transmission gate logic, 5.5-V tolerant |
| Operating Temperature | -40°C to +85°C |
| Package | SOT-23-6 (DBV) |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| RoHS Status | Compliant |
| Power-Down Feature | Isolation in power-down mode |
TS5A3159DBVR Pin Configuration
| Pin 1 | NO — Normally-open drain/source terminal |
| Pin 2 | GND — Ground |
| Pin 3 | COM — Common drain/source terminal |
| Pin 4 | IN — Digital select input (7 V overvoltage tolerant) |
| Pin 5 | V+ — Power supply, 1.65 V to 5.5 V |
| Pin 6 | NC — Normally-closed drain/source terminal |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TS5A3159DBVR is suitable for 6 applications: Audio Signal Routing, Battery-Powered Portable Equipment, Data Acquisition Multiplexing, Sensor Front-End Switching, Industrial Control Signal Selection, Analog Signal Path Protection and Backup Switching.
Audio Signal Routing
The TS5A3159DBVR suits audio signal routing because its 1.1 Ω typical ON-resistance introduces negligible insertion loss, and its low, flat Ron profile across the signal range minimizes total harmonic distortion in speaker-level and line-level paths. In a typical design, the COM pin connects to an amplifier or codec input while NO and NC select between a microphone and line-in source. The break-before-make feature eliminates source-to-source shorting glitches during source changes, and 64 dB isolation keeps the unselected channel from leaking into the active path. Bidirectional transmission-gate operation also allows the same switch to serve headphone output or line-out muxing.
Recommended
Battery-Powered Portable Equipment
The 1.65 V minimum supply lets the TS5A3159DBVR switch signals directly on a single-cell alkaline or LiCoin rail, and its CMOS transmission gate draws only microamps of quiescent current, extending battery life in handheld instruments and wearables. The wide 1.65 V to 5.5 V range means one design spans products powered by 2×AA, Li-ion, or USB. Its 6-pin SOT-23-6 package occupies under 9 mm² of board area, and the 7 V select-pin overvoltage tolerance protects the device when a control GPIO is asserted before VCC is established during power sequencing.
Recommended
Data Acquisition Multiplexing
In data acquisition front ends, the TS5A3159DBVR routes multiple sensor or test-point signals to a single ADC input. The 1.1 Ω Ron is low enough that its voltage drop is negligible for typical source impedances, and break-before-make switching prevents the ADC from sampling an intermediate state during channel changes - add a short settling delay of roughly 100 ns before conversion. The 64 dB off-isolation suppresses crosstalk from inactive channels, preserving effective resolution. Pairing the switch with a precision ADC lets a single converter serve multiple inputs at low cost and board area.
Recommended
Sensor Front-End Switching
Bridge, thermistor, and analog sensor arrays benefit from the TS5A3159DBVR's low ON-resistance: at 1.1 Ω typical, excitation or signal-path error is below 1 mV for a 1 mA sensor current. The CMOS transmission gate passes signals rail-to-rail bidirectionally, so the same device handles both bias routing and signal selection. Supply operation down to 1.65 V matches modern low-voltage sensor interfaces, and the -40°C to +85°C industrial range covers most environments. The select pin's 7 V overvoltage tolerance guards against fault conditions from miswired sensor connectors during service.
Recommended
Industrial Control Signal Selection
Industrial controllers use the TS5A3159DBVR to select between redundant analog signals, feedback loops, or calibration references. The -40°C to +85°C rating and robust 1 Ω-class Ron maintain accuracy across temperature, while the 5.5 V maximum supply aligns with standard 5 V industrial logic. Because the device isolates in power-down mode, an unpowered switch stage does not corrupt a live signal bus. For designs requiring AEC-Q100 automotive qualification instead, the pin-identical TS5A3159QDBVRQ1 offers the same function with formal automotive qualification, enabling one layout across both markets.
Recommended
Analog Signal Path Protection and Backup Switching
The TS5A3159DBVR works as a failover element that swaps a primary signal path to a backup source, using the select pin's 7 V overvoltage tolerance to accept control logic even during supply transients. Its 70 ns turn-on and 40 ns turn-off times make path changes effectively instantaneous for slow analog signals such as temperature, pressure, and audio. In reversed application, the same pin compatibility lets designers second-source between TI and onsemi NC7SB3157 sockets without board changes, reducing supply risk in long-lifetime industrial and networking products.
Recommended
Recommended Products Summary
Engineering reference data for TS5A3159DBVR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TS5A3159ADBVR | TS5A3159QDBVRQ1 | NC7SB3157P6X | SN74LVC1G3157DBVR |
|---|---|---|---|---|---|
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 - same footprint | SOT-23-6 (DBV) - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | onsemi | Texas Instruments |
| Supply Voltage Range | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V |
| ON-Resistance (typ) | 1.1 Ω | 1.1 Ω | 1 Ω (approx.) | ~1.1 Ω class | ~6 Ω |
| Break-Before-Make | Yes | Yes | Yes | [DATA_NEEDED] | Yes |
| Select Pin Overvoltage Tolerance | 7 V | 7 V | 7 V | [DATA_NEEDED] | [DATA_NEEDED] |
| Automotive Grade (AEC-Q100) | No | No | Yes | No | No |
| Configuration | 1-ch SPDT (2:1) | 1-ch SPDT (2:1) | 1-ch SPDT (2:1) | 1-ch SPDT (2:1) | 1-ch SPDT (2:1) |
Key Differentiators
- Ultra-low 1.1 Ω typical ON-resistance (vs SN74LVC1G3157DBVR)
- 7 V select-pin overvoltage protection (vs NC7SB3157P6X)
- Automotive variant available in same footprint (vs TS5A3159QDBVRQ1)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 2 mm of the V+ pin, with a solid ground return via to the GND plane. The SOT-23-6 leads are small and thermally neutral, but short traces on the COM/NO/NC paths reduce parasitic capacitance that degrades off-isolation at high frequency. Keep the analog signal traces away from the IN select trace to avoid control-signal coupling into the switched path.
Do not exceed 7 V on the IN pin and never apply signal voltages beyond the V+ rail plus the datasheet limit on COM/NO/NC - the switch passes signals only within the supply range. Remember the switch is not ideal at low supply: Ron rises significantly at 1.65 V versus 5.5 V, so recheck insertion loss if you lower the rail. During channel changes, break-before-make opens both paths for tens of nanoseconds; downstream sampling circuits need a settling delay.
At Ron = 1.1 Ω typical (2.5 Ω max), series insertion loss is negligible for high-impedance loads, but with low-impedance sources (< 50 Ω) the Ron-to-source divider and its temperature drift create gain error. For precision gain chains, place the switch ahead of a high-input-impedance buffer such as an OPA-series op-amp rather than directly driving low-impedance loads.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 not applicable to the standard version - use TS5A3159QDBVRQ1 for automotive qualification.
