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Home > Products > Integrated Circuits (ICs) > Linear > Comparators

Texas Instruments 7700801DA

Name: 7700801DA
Brand: Texas Instruments
SKU: 7700801DA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7700801DA

Manufacturer:: Texas Instruments

Category:: Comparators

Package:: -

Datasheet:: 7700801DA.pdf

Description:: LM139-MIL QUAD DIFFERENTIAL COMP

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Product details

Overview

7700801DA from Texas Instruments is a military-grade quad differential voltage comparator IC designed for single- or dual-supply operation across –55°C to +125°C. It features open-collector outputs, 2 V to 36 V supply range, 2 mV typical input offset voltage, 25 nA typical input bias current, and operates with inputs referenced to ground. It is used in power supervision, industrial control, and automotive body modules where high-reliability voltage comparison is required.

For engineers reviewing the 7700801DA datasheet, 7700801DA pinout, 7700801DA application, or 7700801DA equivalent, key selection criteria include its MIL-PRF-38535 compliance, CFP (W) ceramic flatpack package, –55°C to +125°C operating range, open-drain output compatibility with TTL/MOS/CMOS, and verified performance under extended voltage and temperature stress.

Technical Context

The 7700801DA implements four independent comparators using PNP Darlington-pair inputs to achieve low input bias current (25 nA typ.) and wide common-mode range (0 V to V_CC – 1.5 V at 25°C). Its open-collector NPN output stage enables wired-AND logic and flexible pull-up voltage selection up to 36 V.

It supports dual-supply operation if |V_CC – V_EE| is 2 V–36 V and V_CC exceeds the input common-mode voltage by ≥1.5 V. All parameters are fully tested per MIL-PRF-38535 requirements, including absolute maximum ratings up to ±36 V differential input and 36 V supply.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2 V to 36 V single supply; ±1 V to ±18 V dual supply - supports wide-input industrial and avionics rails without level-shifting.
Input Offset Voltage	2 mV typical - ensures accurate threshold detection with minimal false triggering in precision monitoring circuits.
Input Bias Current	25 nA typical - enables high-impedance sensor interfacing (e.g., thermistors, RTDs) without significant loading error.
Common-Mode Input Range	0 V to V_CC – 1.5 V at 25°C - allows direct ground-referenced sensing and rail-to-rail input capability near V_CC.
Output Type	Open-collector NPN - permits wired-AND logic, mixed-voltage interfacing (e.g., 3.3 V MCU with 24 V load), and external pull-up flexibility.
Operating Temperature	–55°C to +125°C - qualified for harsh-environment deployment in military, aerospace, and under-hood automotive systems.
Response Time	1.3 µs typical (100 mV overdrive, 5.1 kΩ pull-up, 15 pF load) - suitable for fast fault detection in power converters and motor drives.

Pinout & Package

7700801DA is housed in a 14-lead Ceramic Flatpack (CFP, package code W), measuring 9.20 mm × 6.29 mm, hermetically sealed per MIL-STD-1835 GDIP1-T14. The package provides high reliability, low moisture ingress, and stable electrical performance across extreme temperatures.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 13, 14	Comparator outputs (1OUT, 2OUT, 3OUT, 4OUT)	Open-collector NPN drains - require external pull-up; sink up to 20 mA; compatible with TTL, MOS, and CMOS logic families.
3	V_CC	Positive supply pin - accepts 2 V to 36 V; powers all four comparators; must be bypassed with 0.1 µF capacitor for noise immunity.
4, 5, 8, 9, 10, 11	Input pairs (1IN−/1IN+, 2IN−/2IN+, 3IN−/3IN+, 4IN−/4IN+)	Differential input terminals - support rail-to-rail common-mode range down to ground; tolerate ±36 V differential input without damage.
12	GND	Ground reference - serves as return path for all comparators and internal circuitry; must be low-impedance for stable operation.
6, 7, 12 (NC)	No-connect	Internally unconnected pins - left floating; no electrical function; do not tie to any potential.

Key Features

Feature	Design Value
Wide supply range (2–36 V)	Eliminates need for dedicated voltage regulators in multi-rail systems - directly interfaces with 3.3 V, 5 V, 12 V, and 24 V subsystems.
Low input bias current (25 nA typ.)	Minimizes voltage drop across high-value divider networks - preserves accuracy in battery-monitoring and precision reference circuits.
Ground-sensing input capability	Enables direct monitoring of signals referenced to system ground - critical for overvoltage, undervoltage, and zero-crossing detection in power supplies.
MIL-PRF-38535 full-parameter testing	Guarantees parametric compliance across full temperature range - reduces qualification effort for defense and space programs requiring traceable test data.
±36 V differential input rating	Withstands transient surges and ESD events without latch-up - enhances robustness in noisy industrial and automotive environments.

Applications

Power Supervision	Oscillators
Use Scenario: Monitoring DC bus voltage in a 28 V aircraft power distribution unit to trigger shutdown during overvoltage (>32 V) or undervoltage (<20 V) conditions. IC Role / Device Role / Timing Role: Quad comparator configured as window detector - two comparators sense upper/lower thresholds; third enables hysteresis; fourth provides status flag. Use Value: Enables fail-safe response within 1.3 µs, leveraging 7700801DA's fast response and guaranteed operation at –55°C and +125°C.	Use Scenario: Building a relaxation oscillator for clock generation in a radiation-hardened telemetry module where crystal oscillators are prohibited. IC Role / Device Role / Timing Role: Comparator with RC feedback network - 7700801DA compares capacitor voltage against fixed reference to generate precise square wave. Use Value: Achieves stable frequency over temperature due to 2 mV offset voltage and low drift, avoiding timing errors in mission-critical data framing.
Automotive Body Control	Logic Voltage Translation
Use Scenario: Detecting door-open status via reed switch closure in a vehicle body control module operating from 12 V battery with cold-crank dips to 6 V. IC Role / Device Role / Timing Role: Single comparator comparing switch voltage to 2.5 V reference - output drives microcontroller GPIO with open-drain logic. Use Value: Maintains reliable operation down to 2 V supply and –40°C ambient, meeting ISO 16750-2 automotive electrical requirements.	Use Scenario: Translating 5 V logic signals from an engine control unit to 3.3 V levels for an infotainment SoC interface. IC Role / Device Role / Timing Role: Level shifter using 7700801DA's open-collector output pulled to 3.3 V - input driven by 5 V signal, output compatible with 3.3 V CMOS inputs. Use Value: Eliminates need for dedicated level-shifter ICs - reduces BOM count while supporting bidirectional translation with external resistor network.

Power Supervision

Oscillators

Use Scenario: Monitoring DC bus voltage in a 28 V aircraft power distribution unit to trigger shutdown during overvoltage (>32 V) or undervoltage (<20 V) conditions.

IC Role / Device Role / Timing Role: Quad comparator configured as window detector - two comparators sense upper/lower thresholds; third enables hysteresis; fourth provides status flag.

Use Value: Enables fail-safe response within 1.3 µs, leveraging 7700801DA's fast response and guaranteed operation at –55°C and +125°C.

Use Scenario: Building a relaxation oscillator for clock generation in a radiation-hardened telemetry module where crystal oscillators are prohibited.

IC Role / Device Role / Timing Role: Comparator with RC feedback network - 7700801DA compares capacitor voltage against fixed reference to generate precise square wave.

Use Value: Achieves stable frequency over temperature due to 2 mV offset voltage and low drift, avoiding timing errors in mission-critical data framing.

Automotive Body Control

Logic Voltage Translation

Use Scenario: Detecting door-open status via reed switch closure in a vehicle body control module operating from 12 V battery with cold-crank dips to 6 V.

IC Role / Device Role / Timing Role: Single comparator comparing switch voltage to 2.5 V reference - output drives microcontroller GPIO with open-drain logic.

Use Value: Maintains reliable operation down to 2 V supply and –40°C ambient, meeting ISO 16750-2 automotive electrical requirements.

Use Scenario: Translating 5 V logic signals from an engine control unit to 3.3 V levels for an infotainment SoC interface.

IC Role / Device Role / Timing Role: Level shifter using 7700801DA's open-collector output pulled to 3.3 V - input driven by 5 V signal, output compatible with 3.3 V CMOS inputs.

Use Value: Eliminates need for dedicated level-shifter ICs - reduces BOM count while supporting bidirectional translation with external resistor network.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad comparator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM139JB	Same die, CDIP (J) package; 14-pin ceramic DIP; 21.30 mm × 7.60 mm body; identical electrical specs and temp range.	Through-hole mounting only; larger footprint; less suitable for high-density or vibration-prone PCBs.	Select LM139JB only when legacy through-hole assembly or socket-based prototyping is required.
LM139FKB	Same die, LCCC (FK) package; 20-pin leadless ceramic chip carrier; 8.90 mm × 8.90 mm; includes additional NC pins and different pinout.	Surface-mount with superior thermal resistance (R_θJC = 9.7°C/W bottom); requires reflow-compatible layout and inspection.	Choose LM139FKB for compact, high-reliability SMT designs needing lowest junction-to-case thermal resistance.

Compared with 7700801DA, LM139JB offers identical performance in a larger through-hole package ideal for ruggedized test fixtures, while LM139FKB delivers superior thermal performance in a smaller SMT footprint - both share the same MIL-PRF-38535 qualification but differ in mechanical integration and board space requirements.

Availability

7700801DA is available at Aetrix Electronics and suitable for power supervision, automotive body control modules, and industrial safety interlocks requiring stable component supply across extended temperature and voltage ranges.

Supply support for 7700801DA 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 and embedded processing solutions, with decades of heritage in high-reliability analog ICs for defense, aerospace, and industrial markets.

The LM139-MIL product line was developed specifically to meet MIL-PRF-38535 requirements for quad comparators in mission-critical systems - emphasizing full-parameter testing, hermetic packaging, and guaranteed operation from –55°C to +125°C.

FAQ

What is the maximum supply voltage rating for the 7700801DA?

The 7700801DA has an absolute maximum supply voltage rating of 36 V for single-supply operation and ±18 V for dual-supply operation. Electrical characteristics are tested up to 30 V supply and ±15 V dual supply per the SLCS160 datasheet. Exceeding these limits may cause permanent damage, even if within the absolute maximum rating.

Does the 7700801DA support ground-referenced input signals?

Yes, the 7700801DA supports ground-referenced input signals. Its common-mode input voltage range includes ground (0 V) and extends up to V_CC – 1.5 V at 25°C, enabling direct interface with sensors, switches, and other signals tied to system ground - a key feature confirmed in the "Features" and "Description" sections of the datasheet.

What package type is used for the 7700801DA?

The 7700801DA uses a 14-lead Ceramic Flatpack (CFP) package, designated as package code W per TI's orderable addendum. Its nominal body size is 9.20 mm × 6.29 mm, and it complies with MIL-STD-1835 GDIP1-T14. This hermetically sealed ceramic package ensures long-term reliability in high-humidity and high-temperature environments.

Can multiple 7700801DA outputs be wired together?

Yes, the open-collector outputs of the 7700801DA can be directly wired together to implement wired-AND logic. This configuration requires a single shared pull-up resistor to V_CC or another logic rail. The output transistor sinks current only when its comparator asserts a low state - ensuring correct logical AND behavior without contention or damage.

Is the 7700801DA qualified to MIL-PRF-38535?

Yes, the 7700801DA is explicitly qualified to MIL-PRF-38535. The datasheet states "On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted," and the device is listed under the LM139-MIL family with full parameter testing across the –55°C to +125°C range - satisfying Class B or Class S requirements per the specification.

7700801DA Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: -

Series:: *

Packaging:: Bulk

Product Status:: Active

Type:: -

Number of Elements:: -

Output Type:: -

Voltage - Supply, Single/Dual (±):: -

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Voltage - Input Offset (Max):: -

Current - Input Bias (Max):: -

Current - Output (Typ):: -

Current - Quiescent (Max):: -

CMRR, PSRR (Typ):: -

Propagation Delay (Max):: -

Hysteresis:: -

Operating Temperature:: -

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7700801DA FAQ

1.How can I place an order for 7700801DA through Aetrix?

Please submit a Request for Quotation (RFQ) for 7700801DA 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 7700801DA reliable?

The price and inventory of 7700801DA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7700801DA is usually 5 days.

3.What payment methods are accepted for 7700801DA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7700801DA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7700801DA?

7700801DA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7700801DA 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 7700801DA?

For technical support, including 7700801DA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7700801DA requirements.

6.How does Aetrix verify that 7700801DA is sourced from the original manufacturer or authorized distributors?

All 7700801DA 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 7700801DA meets industry standards.

7.What is the process for return or replacement of 7700801DA?

All 7700801DA units undergo pre-shipment inspection (PSI). If there is an issue with 7700801DA, 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 7700801DA part is unused and in its original packaging.

Return procedure for 7700801DA:

1.Submit a request within 90 days.

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

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