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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Texas Instruments TPS3307-18MJG

Name: TPS3307-18MJG
Brand: Texas Instruments
SKU: TPS3307-18MJG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3307-18MJG

Manufacturer:: Texas Instruments

Category:: Power Management - Specialized

Package:: -

Datasheet:: TPS3307-18MJG.pdf

Description:: TPS3307-18M TRIPLE PROCESSOR SUP

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Product details

Overview

TPS3307-18MJG from Texas Instruments is a triple-voltage supervisory IC for military-grade DSP and processor-based systems, monitoring 3.3 V, 1.8 V, and an adjustable supply (≥1.25 V) with fixed 200 ms power-on reset delay, 40 µA supply current, and operation from −55°C to 125°C. It delivers active-low and active-high RESET outputs and supports manual reset via MR pin.

For engineers reviewing the TPS3307-18MJG datasheet, TPS3307-18MJG pinout, TPS3307-18MJG application, or TPS3307-18MJG equivalent, this device is selected for high-reliability embedded control where simultaneous multi-rail voltage monitoring, temperature-stable thresholds, and MIL-STD-883 qualified packaging are required.

Technical Context

The TPS3307-18MJG integrates three independent voltage comparators with a shared 1.25 V temperature-compensated reference, enabling precise threshold detection at SENSE1 (2.93 V typ), SENSE2 (1.68 V typ), and SENSE3 (1.25 V typ). Its internal timer initiates a fixed 200 ms reset delay after all monitored supplies exceed their respective VIT+ thresholds.

It features dual RESET outputs (active-low and active-high), a manual reset input (MR) that forces RESET assertion when low, and operates across 2 V–6 V VDD while asserting RESET down to VDD ≥ 1.1 V. Input hysteresis (2–60 mV) prevents chatter near threshold crossings.

Key Specifications

Parameter	Value and Actual Design Meaning
VDD Range	2 V to 6 V - supports wide-input industrial/military power rails without external regulation
SENSE1 Threshold	2.93 V (typ) - precisely monitors 3.3 V supply with ±70 mV hysteresis for noise immunity
SENSE2 Threshold	1.68 V (typ) - targets 1.8 V core rail with 1.64–1.73 V min/max tolerance over temperature
SENSE3 Threshold	1.25 V (fixed) - enables monitoring of any supply >1.25 V via external resistor divider
Reset Delay	200 ms (typ) - ensures robust system initialization without external capacitor
Supply Current	40 µA (max) - enables always-on supervision in low-power military subsystems
Operating Temp	−55°C to 125°C - qualified for extended-range military and aerospace environments
ESD Rating	2000 V HBM - exceeds MIL-STD-883 Method 3015 for rugged board-level handling

Pinout & Package

Ceramic Dual In-Line Package (CDIP-8), hermetically sealed, 5.08 mm max height, MIL-STD-1835 GDIP1-T8 compliant, suitable for high-reliability PCB mounting with through-hole soldering.

Pin	Circuit Role	Design Meaning
1	SENSE1	Input for 3.3 V rail monitoring; threshold = 2.93 V (typ)
2	SENSE2	Input for 1.8 V rail monitoring; threshold = 1.68 V (typ)
3	SENSE3	Adjustable input for supply ≥1.25 V; threshold = 1.25 V (fixed reference)
4	GND	Analog ground reference for all comparators and reference circuitry
5	VDD	Primary power supply input (2–6 V); powers internal reference and logic
6	MR	Manual reset input; low-active assertion overrides all sense inputs
7	RESET	Active-low open-drain output; sinks up to 5 mA; asserted when any SENSEn < VIT− or MR = L
8	RESET	Active-high push-pull output; complements pin 7; VOH = VDD–0.2 V (min)

Key Features

Feature	Design Value
Triple independent voltage supervision	Simultaneously monitors 3.3 V, 1.8 V, and user-defined rail-eliminates need for three discrete supervisors
Fixed 200 ms power-on reset	No external timing capacitor required; reduces BOM count and layout area in space-constrained modules
Dual RESET outputs	Provides both active-low and active-high signals-directly interfaces with legacy and modern logic families without level-shifting
Temperature-compensated 1.25 V reference	Ensures stable thresholds across −55°C to 125°C; avoids calibration drift in harsh thermal environments
MIL-STD-883 qualified	Meets military screening requirements including ESD >2000 V HBM and extended temperature operation
Low 40 µA quiescent current	Enables continuous supervision in battery-backed or energy-harvested subsystems without significant drain

Applications

Military DSP Power Sequencing	Industrial Programmable Logic Controller
Use Scenario: Power-up sequencing of SMJ320C6201B DSP with 3.3 V I/O, 1.8 V core, and auxiliary 2.5 V supply in airborne radar processing unit. IC Role / Device Role / Timing Role: Triple supervisor asserts synchronized RESET until all rails stabilize above thresholds, then holds 200 ms delay before release. Use Value: Prevents DSP lockup during cold-start under rapid thermal transients; eliminates need for discrete RC timers or FPGA-based sequencing logic.	Use Scenario: Monitoring redundant 24 V DC input, 5 V logic rail, and 3.3 V microcontroller supply in factory-floor PLC backplane. IC Role / Device Role / Timing Role: Detects undervoltage on any rail and triggers immediate system halt via active-low RESET to safety controller. Use Value: Enables deterministic fault response within 5 µs propagation delay-meets SIL-2 functional safety timing constraints.
Aerospace Avionics Power Management	Defense Communications Transceiver
Use Scenario: Supervising 28 V primary bus, 15 V analog front-end, and 1.2 V FPGA configuration rail in satellite telemetry module. IC Role / Device Role / Timing Role: Uses SENSE3 with resistor divider to monitor 28 V bus; provides fail-safe RESET to watchdog timer upon any rail collapse. Use Value: Hermetic CDIP-8 package withstands vacuum and radiation; −55°C to 125°C range supports orbital thermal cycling.	Use Scenario: Ensuring clean boot of RF SoC (e.g., SMJ320C6201B) in encrypted HF/VHF radio with 3.3 V, 1.8 V, and 5 V supplies. IC Role / Device Role / Timing Role: MR pin tied to front-panel reset switch; RESET outputs drive both SoC reset and FPGA configuration state machine. Use Value: Dual RESET polarity eliminates external inverters; 200 ms delay guarantees full PLL lock before firmware execution.

Military DSP Power Sequencing

Industrial Programmable Logic Controller

Use Scenario: Power-up sequencing of SMJ320C6201B DSP with 3.3 V I/O, 1.8 V core, and auxiliary 2.5 V supply in airborne radar processing unit.

IC Role / Device Role / Timing Role: Triple supervisor asserts synchronized RESET until all rails stabilize above thresholds, then holds 200 ms delay before release.

Use Value: Prevents DSP lockup during cold-start under rapid thermal transients; eliminates need for discrete RC timers or FPGA-based sequencing logic.

Use Scenario: Monitoring redundant 24 V DC input, 5 V logic rail, and 3.3 V microcontroller supply in factory-floor PLC backplane.

IC Role / Device Role / Timing Role: Detects undervoltage on any rail and triggers immediate system halt via active-low RESET to safety controller.

Use Value: Enables deterministic fault response within 5 µs propagation delay-meets SIL-2 functional safety timing constraints.

Aerospace Avionics Power Management

Defense Communications Transceiver

Use Scenario: Supervising 28 V primary bus, 15 V analog front-end, and 1.2 V FPGA configuration rail in satellite telemetry module.

IC Role / Device Role / Timing Role: Uses SENSE3 with resistor divider to monitor 28 V bus; provides fail-safe RESET to watchdog timer upon any rail collapse.

Use Value: Hermetic CDIP-8 package withstands vacuum and radiation; −55°C to 125°C range supports orbital thermal cycling.

Use Scenario: Ensuring clean boot of RF SoC (e.g., SMJ320C6201B) in encrypted HF/VHF radio with 3.3 V, 1.8 V, and 5 V supplies.

IC Role / Device Role / Timing Role: MR pin tied to front-panel reset switch; RESET outputs drive both SoC reset and FPGA configuration state machine.

Use Value: Dual RESET polarity eliminates external inverters; 200 ms delay guarantees full PLL lock before firmware execution.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3307-18MFKB	LCCC-20 package (vs. CDIP-8); identical electrical specs and pin functions but different pinout and footprint	Used in surface-mount avionics modules requiring higher I/O density and hermetic ceramic encapsulation	Select when board assembly uses reflow-compatible LCCC; not pin-compatible with TPS3307-18MJG
TPS3307-18-Q1	Automotive AEC-Q100 Grade 1 qualification (−40°C to 125°C); same CDIP-8 package but different screening and traceability	Targeted at automotive ADAS ECUs-not rated for military temperature extremes or MIL-STD-883 testing	Choose only for automotive production; lacks −55°C capability and military ESD rating of TPS3307-18MJG

Compared with TPS3307-18MFKB and TPS3307-18-Q1, the TPS3307-18MJG uniquely combines CDIP-8 through-hole compatibility, −55°C start-up, and MIL-STD-883 qualification-making it the sole option for legacy military hardware upgrades requiring drop-in replacement in existing through-hole layouts.

Availability

TPS3307-18MJG is available at Aetrix Electronics and suitable for military avionics, industrial programmable controllers, and defense communications equipment requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for TPS3307-18MJG 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

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and industrial/military qualification.

The TPS3307 family was designed specifically for high-integrity power supervision in DSP and microprocessor systems operating under extreme environmental stress-targeting aerospace, defense, and critical infrastructure applications.

FAQ

What is the minimum VDD required for TPS3307-18MJG to assert RESET?

The TPS3307-18MJG asserts RESET when VDD rises above 1.1 V, enabling early fault detection during power ramp-up. This threshold is guaranteed across −55°C to 125°C and allows reliable reset initiation even before downstream regulators reach nominal output. The TPS3307-18MJG maintains this behavior regardless of SENSE input states until all monitored rails exceed their respective VIT+ thresholds.

Does TPS3307-18MJG support monitoring a 2.5 V supply?

Yes-the TPS3307-18MJG supports monitoring a 2.5 V supply using the SENSE3 input with an external resistor divider. Since SENSE3's internal threshold is fixed at 1.25 V, a 2:1 resistive divider (e.g., 10 kΩ top, 10 kΩ bottom) scales 2.5 V down to 1.25 V at the pin. The TPS3307-18MJG datasheet confirms this configuration is valid for any supply >1.25 V.

Can TPS3307-18MJG replace TPS3307-18MFKB on the same PCB?

No-TPS3307-18MJG (CDIP-8) and TPS3307-18MFKB (LCCC-20) have incompatible packages, pin counts, and pinouts. The TPS3307-18MJG has 8 pins in dual-inline configuration, while the MFKB variant uses 20 leads in a leadless ceramic chip carrier. Direct substitution requires PCB redesign; they share identical functionality but not mechanical or electrical pin compatibility.

What is the propagation delay from SENSE1 falling below threshold to RESET assertion?

The TPS3307-18MJG asserts RESET within 1 µs to 5 µs after any SENSE input falls below its negative-going threshold (VIT−), per the datasheet's switching characteristics table. This fast response ensures immediate system halt during brownout events. The TPS3307-18MJG achieves this with dedicated comparator paths and no internal filtering-critical for real-time fault containment.

Is TPS3307-18MJG RoHS compliant?

No-TPS3307-18MJG uses SNPB (tin-lead) lead finish and is not RoHS compliant, as confirmed in TI's Package Option Addendum. It is designated for military/aerospace use where leaded finishes are permitted and preferred for solder joint reliability under thermal cycling. For RoHS-compliant alternatives, consider the TPS3307-18-Q1 or consult TI's enhanced product line.

TPS3307-18MJG Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Applications:: -

Current - Supply:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

TPS3307-18MJG FAQ

1.How can I place an order for TPS3307-18MJG through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3307-18MJG 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 TPS3307-18MJG reliable?

The price and inventory of TPS3307-18MJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3307-18MJG is usually 5 days.

3.What payment methods are accepted for TPS3307-18MJG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3307-18MJG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3307-18MJG?

TPS3307-18MJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3307-18MJG 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 TPS3307-18MJG?

For technical support, including TPS3307-18MJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3307-18MJG requirements.

6.How does Aetrix verify that TPS3307-18MJG is sourced from the original manufacturer or authorized distributors?

All TPS3307-18MJG 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 TPS3307-18MJG meets industry standards.

7.What is the process for return or replacement of TPS3307-18MJG?

All TPS3307-18MJG units undergo pre-shipment inspection (PSI). If there is an issue with TPS3307-18MJG, 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 TPS3307-18MJG part is unused and in its original packaging.

Return procedure for TPS3307-18MJG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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