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Silicon Labs TSM984ESE+T
- Part No.:
- TSM984ESE+T
- Manufacturer:
- Silicon Labs
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSM984ESE+T.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TSM984ESE+T from Silicon Laboratories is a quad micropower comparator with integrated ±2% 1.182V reference, open-drain outputs, and separate GND pin for single-supply operation. It draws 8.5μA max over temperature, supports 2.5V–11V single or ±1.25V–±5.5V dual supplies, and features 12μs propagation delay at 10mV overdrive - ideal for battery-powered window detectors and level translators.
For engineers reviewing the TSM984ESE+T datasheet, TSM984ESE+T pinout, TSM984ESE+T application, or TSM984ESE+T equivalent, key selection criteria include its quad-channel open-drain architecture, internal reference accuracy (±2% over −40°C to +85°C), GND-referenced output sinking capability, and compatibility with low-voltage (≥2.5V) and dual-supply systems.
Technical Context
The TSM984ESE+T implements four independent comparators with rail-to-rail input common-mode range (V− to V+ − 1.3V), enabling detection near supply rails. Its open-drain outputs sink current to GND (not V−), enabled by dedicated GND and V− pins - a configuration distinct from TSM972/TSM973/TSM982 variants that sink to V−.
Unlike TSM971/TSM973/TSM982, the TSM984ESE+T lacks a HYST pin and does not support adjustable hysteresis via internal reference feedback. Its 1.182V reference is specified at ±2% over −40°C to +85°C and provides up to 25μA source / 15μA sink current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Comparator Count | Quad (4 independent channels) |
| Supply Voltage Range | +2.5V to +11V single supply; ±1.25V to ±5.5V dual supply - supports wide-input industrial and portable systems |
| Quiescent Current | 8.5μA max over −40°C to +85°C - enables multi-year battery life in always-on sensing nodes |
| Reference Voltage | 1.182V ±2% over −40°C to +85°C - stable threshold generation without external precision reference |
| Propagation Delay | 12μs at 10mV overdrive - suitable for medium-speed monitoring (e.g., power-good sequencing) |
| Input Common-Mode Range | V− to V+ − 1.3V - accepts signals down to negative rail, critical for ground-referenced sensor interfaces |
| Output Type | Open-drain, GND-referenced - enables wired-OR logic and level shifting between 0V and V+ domains |
Pinout & Package
Package: 16-pin SOIC (width 7.5mm, JEDEC MS-013 compliant). Pin pitch: 1.27mm. Body dimensions: 10.3 × 7.5 × 1.75mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B open-drain output - sinks to GND; requires external pull-up for logic HIGH |
| 2 | OUTA | Comparator A open-drain output - identical behavior to OUTB; supports independent channel control |
| 3 | V+ | Positive supply input - accepts 2.5V–11V; powers all comparators and reference |
| 4 | INA− | Comparator A inverting input - rail-to-rail capable; input leakage < ±5nA ensures high-impedance sensing |
| 5 | INA+ | Comparator A noninverting input - matches INA− specs; enables differential or single-ended configurations |
| 6 | INB− | Comparator B inverting input - electrically identical to INA−; supports dual-threshold detection |
| 7 | INB+ | Comparator B noninverting input - same performance as INA+; used with INB− for second channel |
| 8 | REF | 1.182V reference output - ±2% accuracy over full temp range; sources/sinks up to 25μA/15μA |
| 9 | V− | Negative supply input - tied to GND for single supply; sets reference and output sink reference point |
| 10 | INC− | Comparator C inverting input - third independent channel; identical electrical specs to INA− |
| 11 | INC+ | Comparator C noninverting input - matches INC−; enables three-level window or sequential logic |
| 12 | IND− | Comparator D inverting input - fourth channel; supports quad-threshold or redundant monitoring |
| 13 | IND+ | Comparator D noninverting input - completes quad set; allows fully independent 4-channel comparison |
| 14 | GND | Ground reference terminal - connects to system GND; defines output LOW level (0V) and stabilizes reference |
| 15 | OUTD | Comparator D open-drain output - sinks to GND; enables independent control of fourth channel |
| 16 | OUTC | Comparator C open-drain output - matches OUTA/OUTB/OUTD; supports parallel or cascaded logic |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs from V− to V+ − 1.3V - eliminates need for level-shifting circuitry in low-voltage sensor interfaces |
| GND-referenced open-drain outputs | All four outputs sink to GND (not V−), enabling direct interfacing with 0V-referenced microcontrollers and logic families |
| Integrated 1.182V reference | ±2% accuracy over −40°C to +85°C - reduces BOM count and PCB area vs. discrete reference ICs |
| Ultra-low quiescent current | 8.5μA max over full temperature range - extends battery life in IoT endpoints and portable medical devices |
| Wide supply voltage support | 2.5V–11V single or ±1.25V–±5.5V dual supply - simplifies design across multiple power architectures (e.g., Li-ion, USB, industrial rails) |
Applications
| Window Detector | Battery Switchover Monitor |
|---|---|
Use Scenario: Monitoring a 5V system for undervoltage (4.5V) and overvoltage (5.5V) conditions using two comparators and resistor dividers. IC Role / Device Role / Timing Role: TSM984ESE+T provides dual-threshold detection with independent OUTA/OUTB outputs; REF supplies precise 1.182V reference for trip-point calculation. Use Value: Eliminates need for external precision reference and reduces component count by 3–4 parts versus discrete solutions. | Use Scenario: Automatic switchover from main DC supply to backup battery when main voltage drops below 4V, while monitoring battery health down to 3.6V. IC Role / Device Role / Timing Role: Two comparators (A and B) generate independent "main fail" and "low battery" signals; open-drain outputs interface directly with MOSFET gate drivers. Use Value: Replaces lossy diode-OR circuits with <0.1V drop, improving efficiency and thermal performance in portable equipment. |
| Level Translator | Power-Good Sequencer |
Use Scenario: Converting ±5V analog signals (e.g., op-amp outputs) to 3.3V TTL-compatible logic levels for MCU input. IC Role / Device Role / Timing Role: TSM984ESE+T compares bipolar inputs against GND-referenced thresholds; open-drain outputs pulled to 3.3V provide clean digital transitions. Use Value: Enables direct interface between legacy analog subsystems and modern low-voltage digital controllers without signal inversion or additional buffers. | Use Scenario: Validating correct startup sequence of multiple power rails (e.g., 12V → 5V → 3.3V → 1.8V) in FPGA or processor-based systems. IC Role / Device Role / Timing Role: Four comparators monitor each rail against its threshold; wired-OR of outputs generates a single "power-good" flag only when all rails are valid. Use Value: Provides deterministic, glitch-free power sequencing assurance with no firmware dependency or timing-critical delays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX984ESE+ | Pin-compatible, identical electrical specs and package; same ±2% reference, 8.5μA max IQ, and GND-referenced outputs | No functional difference - direct alternate with identical use cases and layout | Select MAX984ESE+ when sourcing from Maxim Integrated distribution channels or requiring legacy part documentation |
| TSM984CSE+ | Same die and functionality, but rated for 0°C to +70°C industrial range (vs. −40°C to +85°C for TSM984ESE+T) | Not suitable for extended-temperature environments (e.g., automotive under-hood, outdoor industrial) | Choose TSM984CSE+ only for cost-sensitive commercial applications operating within 0–70°C ambient |
Compared with MAX984ESE+, TSM984ESE+T offers identical performance and drop-in compatibility but with Silicon Labs' quality and traceability; versus TSM984CSE+, it adds 40°C wider operating range at no pinout or circuit change - critical for reliability in harsh environments.
Availability
TSM984ESE+T is available at Aetrix Electronics and suitable for battery-powered systems, industrial sensor monitors, power supply sequencers, and portable medical devices requiring stable component supply across extended temperature ranges.
Supply support for TSM984ESE+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 Laboratories is a fabless semiconductor company specializing in low-power, mixed-signal ICs for timing, MCU, wireless, and sensor applications.
The TSM984ESE+T belongs to Silicon Labs' TSM9xx micropower comparator family, designed specifically for ultra-low-power threshold detection in space- and energy-constrained systems such as wearables, remote sensors, and battery-backed instrumentation.
FAQ
What is the operating temperature range of the TSM984ESE+T?
The TSM984ESE+T is rated for −40°C to +85°C, making it suitable for industrial, automotive cabin, and outdoor electronics applications. This extended range is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics sections of the official datasheet, where all parameters (including supply current and reference voltage) are guaranteed across this full span.
Does the TSM984ESE+T support adjustable hysteresis?
No, the TSM984ESE+T does not include a HYST pin and cannot implement adjustable hysteresis via internal reference feedback. Unlike TSM971/TSM973/TSM982, it relies on external positive-feedback resistor networks if hysteresis is required - a design choice confirmed in the Applications Information section and PIN FUNCTIONS table.
What is the reference voltage accuracy of the TSM984ESE+T over temperature?
The TSM984ESE+T provides a 1.182V reference with ±2% accuracy over 0°C to +70°C and ±3% over −40°C to +85°C. These values are explicitly listed in the Electrical Characteristics tables on pages 5 and 6 of the datasheet under "REFERENCE" parameters, with separate min/typ/max columns for each temperature grade.
Can the TSM984ESE+T operate from a 2.5V single supply?
Yes, the TSM984ESE+T supports single-supply operation from +2.5V to +11V, as stated in the FEATURES and DESCRIPTION sections. At 2.5V, it maintains 8.5μA max supply current and full functionality - though reference output ceases below ~2.2V, while comparator operation continues down to 1.5V per the "Low-Voltage Operation" subsection on page 12.
How are the outputs of the TSM984ESE+T configured, and what is their sink capability?
All four outputs (OUTA–OUTD) are open-drain and sink to GND, not V−. Each can sink up to 1.8mA at 0.4V drop (per Electrical Characteristics, page 5), enabling direct interface with standard pull-up resistors and logic families. This GND-referenced sinking is confirmed in the PIN FUNCTIONS table (page 10) and THEORY OF OPERATION section (page 12).
TSM984ESE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- TSM98x
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 4
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 2.5V
- Voltage - Input Offset (Max):
- 0.005µA @ 2.5V
- Current - Input Bias (Max):
- 40mA
- Current - Output (Typ):
- 8.5µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
TSM984ESE+T FAQ
1.How can I place an order for TSM984ESE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM984ESE+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 TSM984ESE+T reliable?
The price and inventory of TSM984ESE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM984ESE+T is usually 5 days.
3.What payment methods are accepted for TSM984ESE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM984ESE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM984ESE+T?
TSM984ESE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM984ESE+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 TSM984ESE+T?
For technical support, including TSM984ESE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM984ESE+T requirements.
6.How does Aetrix verify that TSM984ESE+T is sourced from the original manufacturer or authorized distributors?
All TSM984ESE+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 TSM984ESE+T meets industry standards.
7.What is the process for return or replacement of TSM984ESE+T?
All TSM984ESE+T units undergo pre-shipment inspection (PSI). If there is an issue with TSM984ESE+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 TSM984ESE+T part is unused and in its original packaging.
Return procedure for TSM984ESE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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