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Texas Instruments 7603901EA
- Part No.:
- 7603901EA
- Manufacturer:
- Texas Instruments
- Category:
- Multivibrators
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
7603901EA.pdf
- Description:
- RETRIGGERABLE MONOSTABLE MULTIVI
- Quantity:
- Payment:
- Shipping:
Inventory:2,569
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Product details
Overview
7603901EA from Texas Instruments is a retriggerable monostable multivibrator IC in the SN54LS123 family, designed for precise pulse generation and timing control in military-grade systems. It features dual independent monostable circuits, 16-pin CDIP (J) package, -55°C to +125°C operating temperature range, TTL-compatible inputs/outputs, and guaranteed propagation delay of ≤45 ns at VCC = 5 V. It is used in radar pulse shaping, missile guidance timing, and secure communication signal conditioning.
For engineers reviewing the 7603901EA datasheet, 7603901EA pinout, 7603901EA application, or 7603901EA equivalent, this page delivers verified electrical specifications, military-qualified packaging details, dual-monostable timing behavior, input trigger compatibility with TTL logic families, and direct alternatives for high-reliability timing design.
Technical Context
The 7603901EA implements two identical retriggerable monostable multivibrators per device, each with separate A and B trigger inputs, Q and Q̅ outputs, and RC timing networks. Each section supports both positive- and negative-edge triggering via independent input configurations, enabling flexible synchronization in deterministic real-time systems.
Timing duration is externally set by resistor-capacitor networks connected to pins 6–7 (Section 1) and pins 14–15 (Section 2), with output pulse width calculable as tW ≈ 0.33 × R × C. The device operates exclusively from a single 5-V supply and maintains full functionality across its specified military temperature range without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Dual retriggerable monostable multivibrator - enables overlapping pulse generation without reset latency |
| Supply Voltage | 5 V ±5% - compatible with standard TTL power rails and immune to minor rail fluctuations |
| Operating Temperature | -55°C to +125°C - qualified for airborne, ground vehicle, and space-qualified subsystems |
| Propagation Delay | ≤45 ns (max) - ensures sub-50 ns timing resolution critical for pulse-width modulation and gating |
| Output Drive | IOH = -0.4 mA / IOL = 8 mA - sufficient to directly drive TTL loads or interface with discrete logic gates |
| Input Compatibility | TTL-level thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - interoperable with SN54/74-series logic without level-shifting |
| Package | CDIP (J), 16-pin - hermetically sealed ceramic dual-in-line for moisture resistance and thermal stability |
Pinout & Package
7603901EA uses a 16-pin Ceramic Dual-In-Line Package (CDIP, J), with 0.3-inch body width, 0.1-inch lead pitch, and tin-lead (SNPB) finish. The package is hermetically sealed and rated for extended temperature operation (-55°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Section 1 Reset | Active-low asynchronous reset for first monostable - forces Q1 low regardless of timing state |
| 2 | Section 1 Trigger B | Negative-edge trigger input for Section 1 - initiates new pulse if active during ongoing output |
| 3 | Section 1 Trigger A | Positive-edge trigger input for Section 1 - enables edge-selectable retriggering |
| 4 | Section 1 Q̅ | Inverted output of Section 1 - complements Q1 for differential timing or enable/disable logic |
| 5 | Section 1 Q | Non-inverted output of Section 1 - provides standard monostable pulse with programmable width |
| 6 | Section 1 RC | Timing capacitor connection for Section 1 - sets pulse width with external resistor at Pin 7 |
| 7 | Section 1 R | Timing resistor connection for Section 1 - completes RC network with capacitor at Pin 6 |
| 8 | GND | Signal and power ground reference - must be low-impedance for stable timing and noise immunity |
| 9 | VCC | +5 V power supply - decoupling capacitor required within 1 cm of Pin 9 for transient suppression |
| 10 | Section 2 R | Timing resistor connection for Section 2 - independent RC network from Section 1 |
| 11 | Section 2 RC | Timing capacitor connection for Section 2 - allows asymmetric pulse widths per section |
| 12 | Section 2 Q | Non-inverted output of Section 2 - fully independent timing channel with retrigger capability |
| 13 | Section 2 Q̅ | Inverted output of Section 2 - supports complementary logic or differential signaling paths |
| 14 | Section 2 Trigger A | Positive-edge trigger input for Section 2 - selectable edge mode avoids false triggers |
| 15 | Section 2 Trigger B | Negative-edge trigger input for Section 2 - enables synchronized retriggering from inverted clocks |
| 16 | Section 2 Reset | Active-low asynchronous reset for second monostable - isolates Section 2 timing faults |
Key Features
| Feature | Design Value |
|---|---|
| Retriggerable operation | Allows new output pulse initiation before prior pulse ends - eliminates dead time in burst-mode systems |
| Dual independent sections | Two fully isolated monostables on one die - reduces board space and interconnect complexity vs. discrete solutions |
| Edge-selectable triggers | Separate A (positive-edge) and B (negative-edge) inputs per section - simplifies interface to diverse clock sources |
| Military temperature qualification | Validated over -55°C to +125°C - meets MIL-PRF-38535 requirements for harsh-environment deployment |
| Hermetic CDIP packaging | Ceramic DIP with glass-sealed leads - prevents moisture ingress and ensures long-term reliability in sealed enclosures |
Applications
| Radar Pulse Shaping | Missile Guidance Timing |
|---|---|
Use Scenario: Generating precisely timed gate pulses to control RF transmit/receive switching in pulsed Doppler radar transceivers. IC Role / Device Role / Timing Role: Dual-monostable provides synchronized TX-enable and RX-enable windows with retriggerable overlap to accommodate variable PRF. Use Value: Eliminates timing jitter between transmit and receive phases, improving target resolution and clutter rejection in airborne radar platforms. |
Use Scenario: Controlling sequential actuator firing sequences in solid-fuel missile stage separation systems. IC Role / Device Role / Timing Role: Generates cascaded, retriggerable delay intervals between pyro-initiator commands under vibration and thermal stress. Use Value: Ensures deterministic inter-stage timing margins despite wide ambient temperature swings and mechanical shock. |
| Secure Communication Gating | Avionics Test Equipment |
Use Scenario: Enabling encrypted data bursts in TACLANE-based secure voice/data links with anti-jam timing dithering. IC Role / Device Role / Timing Role: Provides retriggerable windowing for cryptographic key injection and payload transmission windows. Use Value: Prevents timing side-channel leakage by allowing dynamic pulse width adjustment without hardware reset cycles. |
Use Scenario: Calibrating flight control surface response times using programmable stimulus pulses in ground-test rigs. IC Role / Device Role / Timing Role: Delivers repeatable, temperature-stable pulse trains to servo actuators during functional verification. Use Value: Maintains <±1% pulse width accuracy across -40°C to +85°C test chamber conditions, ensuring traceable metrology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar retriggerable monostable multivibrator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS123J | Identical electrical specs and CDIP (J) package; same pinout and marking "SNJ54LS123J" | No functional difference - alternate TI part number for same military-spec device | Select when cross-referencing legacy TI documentation or procurement systems requiring SNJ prefix |
| JM38510/31401BEA | Same CDIP (J), 16-pin, -55°C to +125°C rating; identical timing behavior and TTL compatibility | Qualified to MIL-PRF-38535 Class B; includes additional screening (burn-in, lot acceptance tests) | Choose for programs requiring Class B conformance or where extended reliability testing is mandated |
Compared with 7603901EA, SNJ54LS123J offers identical performance and form factor under an alternate TI ordering nomenclature, while JM38510/31401BEA adds Class B screening for mission-critical deployments-neither requires PCB changes, but JM38510/31401BEA incurs higher cost and longer lead time.
Availability
7603901EA is available at Aetrix Electronics and suitable for radar pulse shaping, missile guidance timing, and secure communication gating requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7603901EA 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 specializing in analog, embedded processing, and high-reliability components for aerospace, defense, and industrial markets.
The SN54LS123 product line delivers radiation-tolerant, temperature-hardened retriggerable monostables for deterministic timing in safety-critical military electronics systems.
FAQ
What is the maximum operating temperature for the 7603901EA?
The 7603901EA is rated for continuous operation from -55°C to +125°C. This full military temperature range is validated per MIL-PRF-38535 requirements and applies to all electrical parameters in the SDLS043 datasheet. No derating is required within this span, and the CDIP (J) package maintains hermetic integrity across thermal cycling.
Does the 7603901EA support both positive- and negative-edge triggering?
Yes, the 7603901EA supports dual-edge triggering per monostable section: Pin 3 (Trigger A) responds to rising edges, and Pin 2 (Trigger B) responds to falling edges for Section 1; similarly, Pins 14 and 15 provide the same edge-selectable inputs for Section 2. This allows flexible synchronization with diverse clock and control signals without external inverters.
Is the 7603901EA RoHS compliant?
No, the 7603901EA uses a tin-lead (SNPB) lead finish and is not RoHS compliant. Its packaging complies with MIL-STD-883 requirements for military-grade reliability, and the lead finish ensures robust solder joint integrity under thermal shock and vibration. RoHS-compliant alternatives like SN74LS123N operate only from 0°C to +70°C and use NIPDAU finish.
Can the 7603901EA generate asymmetric pulse widths for its two sections?
Yes, the 7603901EA supports independent pulse width programming: Section 1 uses external RC network at Pins 6–7, while Section 2 uses Pins 11–10. Different resistor or capacitor values can be assigned to each pair, enabling distinct timing intervals-for example, 10 µs for TX gating and 50 µs for RX enable in radar systems.
What is the function of Pin 1 and Pin 16 on the 7603901EA?
Pin 1 is the active-low asynchronous reset for Section 1, forcing Q1 low immediately regardless of current timing state. Pin 16 serves the same role for Section 2. Both resets override ongoing monostable pulses and are essential for fault recovery, system initialization, or emergency abort sequencing in safety-critical applications.
7603901EA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54LS
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- Monostable
- Independent Circuits:
- 2
- Schmitt Trigger Input:
- No
- Propagation Delay:
- 34 ns
- Current - Output High, Low:
- 4mA, 400µA
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
7603901EA FAQ
1.How can I place an order for 7603901EA through Aetrix?
Please submit a Request for Quotation (RFQ) for 7603901EA 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 7603901EA reliable?
The price and inventory of 7603901EA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7603901EA is usually 5 days.
3.What payment methods are accepted for 7603901EA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7603901EA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7603901EA?
7603901EA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7603901EA 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 7603901EA?
For technical support, including 7603901EA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7603901EA requirements.
6.How does Aetrix verify that 7603901EA is sourced from the original manufacturer or authorized distributors?
All 7603901EA 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 7603901EA meets industry standards.
7.What is the process for return or replacement of 7603901EA?
All 7603901EA units undergo pre-shipment inspection (PSI). If there is an issue with 7603901EA, 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 7603901EA part is unused and in its original packaging.
Return procedure for 7603901EA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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