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Silicon Labs TSM932CSA+T
- Part No.:
- TSM932CSA+T
- Manufacturer:
- Silicon Labs
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSM932CSA+T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,751
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Product details
Overview
TSM932CSA+T from Silicon Labs is a dual micropower analog comparator with integrated 1.182V ±2% reference and adjustable hysteresis, operating from +2.5V to +11V (single) or ±1.25V to ±5.5V (dual), delivering 6μA max supply current over temperature, 12μs propagation delay at 10mV overdrive, and push-pull TTL/CMOS-compatible outputs - ideal for battery-powered window detectors and low-voltage threshold monitoring.
For engineers reviewing the TSM932CSA+T datasheet, TSM932CSA+T pinout, TSM932CSA+T application, or TSM932CSA+T equivalent, this page delivers verified electrical specs, SOIC-8 package mapping, dual-comparator functional context, hysteresis implementation guidance, and direct alternatives for low-power comparator selection in space-constrained, long-life embedded systems.
Technical Context
The TSM932CSA+T integrates two independent comparators sharing a single internal 1.182V reference and dedicated HYST pin per channel, enabling user-configurable hysteresis without external op-amps. Its input common-mode range extends from V− to V+ − 1.3V, supporting rail-to-rail sensing in both single- and dual-supply configurations.
Each comparator features crowbar-current-free push-pull output stages capable of sourcing/sinking ≥40mA continuously, with output swing referenced to V− (not GND), ensuring compatibility with TTL/CMOS logic across ±5V or +5V/0V supplies. The device maintains sub-6μA quiescent current across −40°C to +85°C while delivering <12μs response time at 10mV overdrive into 100pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V (single) or ±1.25V to ±5.5V (dual) - supports wide-input industrial and battery systems without level-shifting. |
| Max Supply Current | 6μA over −40°C to +85°C - enables multi-year operation on coin cells or energy-harvesting sources. |
| Propagation Delay | 12μs at 10mV overdrive - provides deterministic timing for precision threshold detection in sensor interfaces. |
| Input Offset Voltage | ±10mV - ensures reliable trip-point accuracy down to ~20mV differential input without calibration. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) - stable internal reference eliminates external voltage divider drift in portable designs. |
| Output Drive | 40mA continuous source/sink - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages. |
| Hysteresis Control | Dedicated HYST pin per comparator - enables precise, resistor-programmable hysteresis bands (up to 100mV) to suppress noise-induced oscillation. |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), JEDEC MS-012 compliant, 3.9mm × 4.9mm body, 1.27mm pitch. Pin 1 marked by beveled corner or dot; pin numbering counterclockwise from top-left when viewed top-side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for single-supply operation; connects to V− to define output swing range (V+ to GND). |
| 2 | OUTA | Comparator A push-pull output - sinks/sourses ≥40mA, TTL/CMOS-compatible, swings V+ to V−. |
| 3 | V− | Negative supply terminal - tied to GND for single supply; sets lower rail for input common-mode and output swing. |
| 4 | INA+ | Comparator A noninverting input - accepts signals from V− to V+ − 1.3V; ≤±5nA leakage ensures high-impedance sensing. |
| 5 | HYST | Hysteresis control input - voltage between REF and REF−50mV sets hysteresis band; connects to REF if unused. |
| 6 | REF | 1.182V ±2% reference output - sourced/sunk up to 25μA/15μA; referenced to V−, not GND. |
| 7 | V+ | Positive supply terminal - supports 2.5V–11V operation; powers comparators, reference, and output stage. |
| 8 | OUTB | Comparator B push-pull output - identical drive capability and logic compatibility as OUTA. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 6μA max over full temperature range - enables >10-year battery life in always-on IoT sensors. |
| Integrated precision reference | 1.182V ±2% (0°C to +70°C), 100μVRMS noise - replaces external reference ICs and reduces BOM count by one component. |
| Programmable hysteresis | Dedicated HYST pin per comparator - allows resistor-based hysteresis tuning (0–100mV) without feedback networks or layout sensitivity. |
| Crowbar-current-free switching | No shoot-through current during output transitions - eliminates supply glitches and EMI in noise-sensitive applications. |
| Rail-to-rail input range | V− to V+ − 1.3V - supports direct sensing of battery voltage, thermistor dividers, or transducer outputs without biasing. |
Applications
| Threshold Detector | Window Comparator |
|---|---|
|
Use Scenario: Monitoring lithium-ion battery voltage to trigger low-battery warning at 3.2V and critical shutdown at 2.8V. IC Role / Device Role / Timing Role: Dual comparator implements independent upper and lower thresholds using shared REF and resistor dividers. Use Value: Eliminates need for external reference and reduces PCB area by 30% versus discrete comparator + reference solution. |
Use Scenario: Detecting valid 4.75V–5.25V power supply range in medical instrumentation with immunity to line noise. IC Role / Device Role / Timing Role: TSM932CSA+T configured as window detector with hysteresis on both thresholds to prevent chatter near boundaries. Use Value: Achieves ±5mV effective hysteresis at input via HYST pin, rejecting 100mV pk-pk ripple without additional filtering. |
| Oscillator Circuit | Battery-Powered System |
|
Use Scenario: Building relaxation oscillator for LED blink timing in wearable devices using RC feedback and internal reference. IC Role / Device Role / Timing Role: Comparator with hysteresis forms core timing element; REF sets trip points, OUT toggles capacitor charge/discharge. Use Value: 12μs propagation delay enables stable 10kHz oscillation frequency with <1% jitter, consuming only 6μA average current. |
Use Scenario: Enabling ultra-low-power wake-up in remote environmental sensor node powered by CR2032 coin cell. IC Role / Device Role / Timing Role: TSM932CSA+T monitors temperature sensor output and triggers MCU wake-up only when threshold crossed. Use Value: 6μA supply current extends battery life to 8+ years in sleep mode; push-pull output directly asserts interrupt line without pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX932CSA+ | Pin- and function-compatible alternate source; identical electrical specs and SOIC-8 footprint per Maxim datasheet. | No difference - validated drop-in replacement for legacy MAX932 designs requiring same performance and layout. | Select MAX932CSA+ when maintaining existing Maxim-sourced BOMs or qualifying against legacy qualification data. |
| TLV3702IDR | Lower supply current (1.8μA/ch), no internal reference, rail-to-rail I/O, but requires external reference and lacks HYST pin. | Suitable for ultra-low-IQ apps where reference is already present; unsuitable for hysteresis-critical or reference-free designs. | Choose TLV3702IDR only if system already includes precision reference and board space permits external hysteresis resistors. |
Compared with MAX932CSA+, TSM932CSA+T offers identical functionality with Silicon Labs' lead-free packaging and extended lifecycle support; versus TLV3702IDR, it trades 4.2μA higher IQ for integrated reference and programmable hysteresis - reducing component count by ≥3 and simplifying noise-immune design.
Availability
TSM932CSA+T is available at Aetrix Electronics and suitable for battery-powered systems, portable medical devices, and industrial sensor nodes requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for TSM932CSA+T 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
Silicon Labs is a fabless semiconductor company specializing in low-power mixed-signal ICs for IoT, timing, and connectivity applications, headquartered in Austin, TX.
The TSM93x family was designed specifically for micropower analog signal conditioning in space- and energy-constrained systems, emphasizing ultra-low IQ, integrated references, and robust noise immunity without sacrificing speed or drive strength.
FAQ
What is the maximum operating supply voltage for TSM932CSA+T?
The TSM932CSA+T supports a maximum single-supply voltage of +11V or dual-supply rails of ±5.5V. Absolute maximum ratings specify V+ to V− must not exceed 12V, and input voltages must stay within (V− − 0.3V) to (V+ + 0.3V). Exceeding these limits risks permanent damage. For reliable operation, keep total supply span ≤11V and ensure input signals remain within the specified common-mode range (V− to V+ − 1.3V) as defined in the TSM932CSA+T datasheet.
Does TSM932CSA+T require external hysteresis components?
No - the TSM932CSA+T includes a dedicated HYST pin per comparator that enables resistor-programmable hysteresis without external op-amps or feedback networks. Connecting two resistors between REF and V− sets the hysteresis band (up to 100mV); if hysteresis is not needed, tie HYST directly to REF. This integrated capability eliminates external components required by most comparators like the TLV3702IDR, making TSM932CSA+T a self-contained solution for noise-immune threshold detection.
Can TSM932CSA+T operate from a 3V single supply?
Yes - the TSM932CSA+T is fully specified for 3V single-supply operation. At V+ = 3V, V− = GND, it draws ≤5.8μA over −40°C to +85°C, maintains ±10mV input offset, and delivers 14μs propagation delay at 10mV overdrive. Input common-mode range extends from 0V to 1.7V, and output swings from 0V to ≥2.6V (at 10mA load), making it suitable for 3V microcontroller interfaces and low-voltage sensor monitoring circuits using the TSM932CSA+T.
What is the purpose of the REF pin on TSM932CSA+T?
The REF pin on TSM932CSA+T provides a stable 1.182V ±2% voltage reference referenced to V−, eliminating the need for external reference ICs or resistor dividers. It can source up to 25μA and sink up to 15μA while maintaining accuracy, and is used to set comparator thresholds and program hysteresis via the HYST pin. Unlike many comparators, the TSM932CSA+T's REF is internally trimmed and temperature-compensated, enabling accurate, low-drift threshold detection in portable and industrial applications without external calibration.
Is TSM932CSA+T pin-compatible with MAX932?
Yes - the TSM932CSA+T is explicitly designed as an alternate source for the MAX932 and is electrically and form-factor identical per Silicon Labs documentation. Both use the same 8-pin SOIC package, identical pinout (GND, OUTA, V−, INA+, HYST, REF, V+, OUTB), and match all key specifications including supply current, propagation delay, reference accuracy, and output drive. This makes TSM932CSA+T a direct drop-in replacement for MAX932 in existing designs without PCB or firmware changes.
TSM932CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- TSM93x
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 2.5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 40mA
- Current - Output (Typ):
- 4.5µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TSM932CSA+T FAQ
1.How can I place an order for TSM932CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM932CSA+T 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 TSM932CSA+T reliable?
The price and inventory of TSM932CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM932CSA+T is usually 5 days.
3.What payment methods are accepted for TSM932CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM932CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM932CSA+T?
TSM932CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM932CSA+T 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 TSM932CSA+T?
For technical support, including TSM932CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM932CSA+T requirements.
6.How does Aetrix verify that TSM932CSA+T is sourced from the original manufacturer or authorized distributors?
All TSM932CSA+T 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 TSM932CSA+T meets industry standards.
7.What is the process for return or replacement of TSM932CSA+T?
All TSM932CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with TSM932CSA+T, 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 TSM932CSA+T part is unused and in its original packaging.
Return procedure for TSM932CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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