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STMicroelectronics STG3159DTR
- Part No.:
- STG3159DTR
- Manufacturer:
- STMicroelectronics
- Package:
- 6-UFDFN
- Datasheet:
-
STG3159DTR.pdf
- Description:
- IC SWITCH SPDT X 1 1.1OHM 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,554
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Product details
Overview
STG3159DTR from STMicroelectronics is a high-speed, low-voltage single-pole double-throw (SPDT) analog switch fabricated in C2MOS technology, operating from 1.65V to 4.5V supply. It delivers 1.0Ω typical ON-resistance at 4.3V, 1.5ns typical propagation delay, and ultra-low 0.2µA max quiescent current at 85°C - ideal for battery-powered portable signal routing in audio, sensor, and data acquisition systems.
For engineers reviewing the STG3159DTR datasheet, STG3159DTR pinout, STG3159DTR application, or STG3159DTR equivalent, key selection criteria include break-before-make timing (6–15ns), 4.5V-tolerant control input at 2.3–3.0V VCC, ±100nA OFF-state leakage, and DFN6L (1.2mm × 1mm) thermal and space constraints.
Technical Context
The STG3159DTR implements a CMOS transmission-gate-based SPDT architecture with complementary P/N-channel pairs per path, enabling rail-to-rail analog signal switching across its full 1.65–4.5V supply range. Its SEL-controlled logic drives internal gate voltages to maintain low RON flatness (≤0.60Ω) and minimize charge injection (≤33pC).
Break-before-make operation is hardwired via internal timing control, ensuring ≥6ns minimum dead time between S1 and S2 conduction states under all VCC and temperature conditions. All I/O pins integrate ESD protection circuits rated to 2000V HBM, 200V MM, and 1000V CDM per JESD22.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 1.65V to 4.5V single supply - supports Li-ion, coin-cell, and multi-rail portable systems without level-shifting. |
| RON (Typ.) | 1.0Ω at VCC = 4.3V, TA = 25°C - enables <10mV drop at 100mA, preserving signal integrity in precision analog paths. |
| tPD (Typ.) | 1.5ns at VCC = 3.0V - supports >300MHz digital signal routing (e.g., USB 1.1, I²C fast-mode, GPIO multiplexing). |
| tD (Break-Before-Make) | 6ns min at VCC = 4.3V - prevents momentary short-circuit between S1 and S2 during state transitions. |
| OIRR / Xtalk | −80dB at 100kHz - isolates sensitive analog channels (e.g., microphone inputs, ADC references) from crosstalk. |
| ICC (Max) | 0.2µA at TA = 85°C - extends battery life in always-on sensor nodes and wearable devices. |
| ESD Rating | 2000V HBM, 200V MM, 1000V CDM - meets IEC 61000-4-2 Level 2 system-level robustness requirements. |
Pinout & Package
STG3159DTR is housed in a thermally enhanced, lead-free DFN6L package (1.2mm × 1mm, 0.4mm pitch), optimized for high-density PCB layouts and automated assembly. The exposed pad (Pin 5 GND) improves thermal dissipation and reduces ground inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SEL) | Digital control input | Active-high logic: drives S1 ON / S2 OFF when high; S1 OFF / S2 ON when low. 4.5V-tolerant up to VCC = 3.0V. |
| 2 (VCC) | Positive supply | Single power rail for analog and digital sections; powers internal level shifters and gate drivers. |
| 3 (D) | Common analog port | Shared connection point for both S1 and S2 paths; must be routed with controlled impedance for RF-sensitive applications. |
| 4 (S2) | Analog channel 2 | Secondary signal path; connects to D only when SEL = low; 25pF OFF capacitance minimizes signal coupling. |
| 5 (GND) | Ground reference | Power and signal return; tied to exposed thermal pad for improved thermal resistance (<120°C/W junction-to-ambient). |
| 6 (S1) | Analog channel 1 | Primary signal path; connects to D only when SEL = high; 52pF ON capacitance supports ≤150MHz −3dB bandwidth. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make timing | Guaranteed 6–15ns dead time prevents signal contention in bidirectional bus sharing or dual-source selection. |
| RON flatness | ≤0.60Ω variation over full signal swing (0V to VCC) ensures consistent gain and linearity in audio and sensor front-ends. |
| Charge injection | ≤33pC at VCC = 4.3V - limits voltage glitch on high-impedance nodes (e.g., sample-and-hold capacitors, op-amp inputs). |
| OFF isolation | −80dB at 100kHz - suppresses interference between adjacent channels in multi-sensor data loggers. |
| Low ICC at temperature | 0.2µA max at 85°C - eliminates thermal runaway risk and enables use in sealed industrial enclosures. |
Applications
| Portable Audio Switching | Medical Sensor Multiplexing |
|---|---|
|
Use Scenario: Routing microphone or headphone signals in Bluetooth earbuds with dual-input support and automatic jack detection. IC Role / Device Role / Timing Role: Analog SPDT switch selecting between MEMS mic and auxiliary line-in while maintaining <1.5ns propagation delay for real-time audio sync. Use Value: 1.0Ω RON preserves SNR >95dB; 25pF COFF prevents pop/click during hot-switching; DFN6L footprint saves >1.5mm² PCB area. |
Use Scenario: Time-division multiplexing of ECG, SpO₂, and temperature sensor outputs into a shared ADC channel in wearable health monitors. IC Role / Device Role / Timing Role: Low-leakage (±100nA) analog switch enabling accurate DC-coupled biosignal acquisition without baseline drift. Use Value: −80dB OIRR prevents cross-channel contamination; 0.2µA ICC extends battery runtime beyond 7 days in continuous monitoring mode. |
| Industrial IO Module Signal Routing | USB 1.1 Data Line Switching |
|
Use Scenario: Selecting between isolated and non-isolated analog inputs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: High-voltage-tolerant (4.5V) control interface allows direct connection to 3.3V microcontroller GPIOs without external level shifters. Use Value: 1.65V min VCC enables operation from backup supercapacitor rails; 125°C max operating temperature supports harsh cabinet environments. |
Use Scenario: Sharing a single USB transceiver between two host controllers in embedded test equipment with dual-configuration capability. IC Role / Device Role / Timing Role: 150MHz −3dB bandwidth and 1.5ns tPD ensure full-speed (12Mbps) USB 1.1 signal integrity with <1UI jitter. Use Value: Break-before-make timing prevents bus contention faults; 52pF CON matches USB differential pair impedance targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog SPDT switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCTR | 2-bit bidirectional level shifter (not analog switch); no RON spec; 3.6V max VCC; no break-before-make. | Designed for digital I/O translation, not analog signal routing; unsuitable for AC-coupled or rail-to-rail analog paths. | Select only if digital signal translation-not analog switching-is required; verify voltage domain compatibility. |
| MAX4617EUT+T | SPDT with 3.5Ω RON (min VCC = 2.7V); 12ns tON; no guaranteed break-before-make; SO-6 package (larger footprint). | Higher RON increases insertion loss in audio paths; SO-6 requires 3× PCB area vs DFN6L; lacks 1.65V operation. | Acceptable where 3.5Ω RON and SO-6 are tolerable; avoid in space-constrained or sub-2V systems. |
Compared with TXS0102DCTR and MAX4617EUT+T, STG3159DTR uniquely combines 1.0Ω RON, 1.65V operation, DFN6L size, and guaranteed break-before-make-making it optimal for miniaturized, low-voltage analog multiplexing where signal fidelity and timing control are critical.
Availability
STG3159DTR is available at Aetrix Electronics and suitable for portable audio design, medical sensor multiplexing, industrial IO modules, and USB 1.1 data line switching requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for STG3159DTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, power, and analog/mixed-signal solutions with vertical manufacturing capabilities.
The STG3159 belongs to ST's low-voltage analog switch product line, engineered specifically for space-constrained, battery-operated systems demanding rail-to-rail analog performance, ultra-low power, and robust ESD immunity.
FAQ
What is the maximum signal voltage that can be switched by STG3159DTR?
The STG3159DTR supports analog signal voltages from 0V to VCC, with VCC rated from 1.65V to 4.5V. Absolute maximum analog input voltage is limited to −0.5V to VCC + 0.5V per Table 3, meaning at VCC = 4.5V, the safe signal range is −0.5V to 5.0V. Exceeding this risks latch-up or permanent damage.
Does STG3159DTR require external pull-up or pull-down resistors on the SEL pin?
No. The SEL input has CMOS-compatible thresholds (VIH = 0.65VCC, VIL = 0.40VCC at 1.65–1.95V VCC) and internal ESD protection diodes. Driving SEL directly from a 1.8V or 3.3V microcontroller GPIO is sufficient; external biasing is unnecessary unless noise immunity in high-EMI environments is required.
Can STG3159DTR be used in bidirectional signal paths such as I²C or UART lines?
Yes - the STG3159DTR is fully bidirectional: signal flow direction (S1↔D or S2↔D) is independent of voltage polarity. Its low RON and symmetric capacitance (52pF ON, 25pF OFF) support I²C standard/fast-mode (≤400kHz) and low-speed UART (≤1Mbps), provided rise/fall times remain within datasheet dt/dv limits.
Is the DFN6L package of STG3159DTR RoHS and REACH compliant?
Yes. STMicroelectronics certifies the STG3159DTR as ECOPACK®-compliant, with lead-free second-level interconnects and full compliance to RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The inner box label and device marking confirm "Pb-free" status per JEDEC JESD97.
STG3159DTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 1.1Ohm
- Channel-to-Channel Matching (ΔRon):
- 50mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 4.3V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 23ns, 21ns
- -3db Bandwidth:
- 150MHz
- Charge Injection:
- 33pC
- Channel Capacitance (CS(off), CD(off)):
- 6pF
- Current - Leakage (IS(off)) (Max):
- 20nA
- Crosstalk:
- -80dB @ 100kHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.2x1)
STG3159DTR FAQ
1.How can I place an order for STG3159DTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STG3159DTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STG3159DTR reliable?
The price and inventory of STG3159DTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STG3159DTR is usually 5 days.
3.What payment methods are accepted for STG3159DTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STG3159DTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STG3159DTR?
STG3159DTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STG3159DTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STG3159DTR?
For technical support, including STG3159DTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STG3159DTR requirements.
6.How does Aetrix verify that STG3159DTR is sourced from the original manufacturer or authorized distributors?
All STG3159DTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STG3159DTR meets industry standards.
7.What is the process for return or replacement of STG3159DTR?
All STG3159DTR units undergo pre-shipment inspection (PSI). If there is an issue with STG3159DTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STG3159DTR part is unused and in its original packaging.
Return procedure for STG3159DTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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