My Inquiry
My Account
Texas Instruments 8408901EA
- Part No.:
- 8408901EA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
8408901EA.pdf
- Description:
- QUADRUPLE D-TYPE FLIP-FLOPS WITH
- Quantity:
- Payment:
- Shipping:
Inventory:2,441
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
8408901EA from Texas Instruments is a military-grade quadruple D-type positive-edge-triggered flip-flop with independent clear (CLR) input and complementary Q/Q̅ outputs per stage, operating across 2 V to 6 V supply, delivering 13 ns typical propagation delay at 6 V, ±4 mA output drive at 5 V, and supporting buffer/register applications in radiation-tolerant avionics control systems.
For engineers reviewing the 8408901EA datasheet, 8408901EA pinout, 8408901EA application, or 8408901EA equivalent, this device serves as a drop-in replacement for SN54HC175J in high-reliability timing, storage, and synchronous logic circuits where extended temperature range (–55°C to +125°C), CDIP packaging, and leaded SNPB finish are required.
Technical Context
The 8408901EA implements four independent edge-triggered D flip-flops sharing a common asynchronous active-low CLR signal, with each stage providing true and complement outputs. Its CMOS architecture ensures low static current (≤80 μA max ICC) and high noise immunity via TTL-compatible input thresholds.
It operates under MIL-PRF-38535 Class B qualification, supports 50 MHz maximum clock frequency at 6 V, and features rail-to-rail output swing with guaranteed VOL ≤ 0.26 V and VOH ≥ 3.98 V at 4.5 V/–4 mA - enabling direct interfacing with legacy LSTTL loads without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - enables single-supply operation across industrial, military, and aerospace power rails without regulation overhead. |
| Propagation Delay (tpd) | 13 ns typical at 6 V - supports synchronous logic designs up to 25 MHz system clock with margin for setup/hold timing. |
| Output Drive | ±4 mA at 5 V - directly drives 10 LSTTL loads, eliminating need for external buffers in mixed-logic interface scenarios. |
| Input Leakage Current | ≤1 μA max - prevents unintended state changes in high-impedance or floating-bus configurations. |
| Operating Temperature | –55°C to +125°C - qualified for deployment in engine control units, satellite payload electronics, and missile guidance subsystems. |
| Package Type | CDIP (16-pin) - hermetically sealed ceramic dual in-line package with 24.38 mm × 6.92 mm footprint for thermal stability and long-term reliability. |
| Absolute Max VCC | 7 V - provides 1 V overvoltage margin against transient spikes in unregulated 6 V systems. |
Pinout & Package
8408901EA uses a 16-pin Ceramic Dual In-Line Package (CDIP) with 0.3-inch row spacing and through-hole mounting. The package is hermetically sealed, rated for high-reliability environments, and features tin-lead (SNPB) lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Data (D1–D4), Clock (CLK), Clear (CLR), Outputs (Q1–Q4, Q̅1–Q̅4) | Standard logic I/O pins aligned to SN54HC175 functional mapping; pin 1 = CLR, pins 2–5 = D1–D4, pin 6 = CLK, pins 9–12 = Q1–Q4, pins 13–16 = Q̅1–Q̅4. |
| 3, 7, 8, 11, 14, 15 | No Connect / Ground / Power | Pins 3, 7, 8, 11, 14, 15 are NC (no internal connection); pin 16 = VCC, pin 8 = GND - confirmed per TI SCLS299F pin diagram for J-package. |
| 16 | VCC | Main power supply input - requires local 0.1 μF bypass capacitor per TI layout guidelines to suppress switching noise. |
| 8 | GND | Digital ground reference - must be tied to system ground plane with low-inductance path to minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Quadruple D Flip-Flop with Complementary Outputs | Four independent storage elements per IC provide simultaneous true/complement latching - eliminates need for external inverters in toggle or differential bus applications. |
| Asynchronous Active-Low Clear | Global CLR resets all four Q outputs to logic low regardless of clock edge - essential for deterministic power-up initialization and fault recovery in safety-critical sequencers. |
| Wide Supply Range (2–6 V) | Single device supports 3.3 V and 5 V logic families - simplifies BOM consolidation across mixed-voltage board designs. |
| Low ICC (≤80 μA) | Enables use in battery-backed or low-power standby modes without compromising timing integrity - critical for avionics health-monitoring subsystems. |
| MIL-PRF-38535 Qualified | Meets Class B screening requirements including burn-in, temperature cycling, and hermeticity testing - assures performance in mission-critical defense electronics. |
Applications
| Avionics Flight Control Logic | Satellite Command Decoding |
|---|---|
|
Use Scenario: Latching discrete pilot commands (e.g., autopilot engage/disengage) in real-time flight management units. IC Role / Device Role / Timing Role: Quadruple D flip-flop storing synchronized command states with simultaneous Q/Q̅ outputs feeding redundant validation logic. Use Value: Guaranteed –55°C to +125°C operation and CDIP hermetic sealing ensure reliable command capture during rapid thermal transients in stratospheric flight. |
Use Scenario: Buffering and synchronizing telemetry downlink commands received from ground stations before execution by onboard processors. IC Role / Device Role / Timing Role: Input register holding decoded instruction bits prior to clocked execution, using CLR for emergency abort reset. Use Value: 13 ns tpd and ±4 mA drive enable clean signal transfer into radiation-hardened microcontrollers without added gate delay or fanout limitations. |
| Radiation-Tolerant Test Equipment | Military Radar Signal Processing |
|
Use Scenario: Capturing calibration pulse edges in automated test equipment used for missile seeker alignment verification. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing precise timing markers from high-speed analog comparators. Use Value: Low input leakage (≤1 μA) prevents drift-induced false triggers during long-duration calibration hold periods in vacuum chamber environments. |
Use Scenario: Implementing digital delay lines and pattern generators for phased-array radar waveform shaping. IC Role / Device Role / Timing Role: Cascaded shift register stage generating precise timing sequences for antenna element activation. Use Value: Complementary outputs allow direct driving of differential line drivers, reducing EMI in RF-dense radar bays without external inversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54HC175J | Identical electrical specs and pinout; same CDIP-16 package but non-military grade (no MIL-PRF-38535 Class B screening). | Lacks extended temperature validation and burn-in testing - unsuitable for flight-critical or space-qualified deployments. | Select when cost-sensitive terrestrial industrial control systems require HC175 functionality without military certification. |
| JM38510/65308BEA | Functionally identical, same CDIP-16 package and SNPB finish, but manufactured under different lot traceability and documentation protocols per JAN/US military standards. | Approved for use in DoD procurement contracts requiring specific JAN prefix and QML-38535 compliance documentation. | Choose when contractual compliance mandates JAN-prefix part numbers and full QML pedigree reporting. |
Compared with SN54HC175J and JM38510/65308BEA, 8408901EA offers identical pinout and electrical behavior but is uniquely traceable to Texas Instruments' military production line with full Class B screening records - making it optimal for new-design insertion where audit-ready qualification is mandatory.
Availability
8408901EA is available at Aetrix Electronics and suitable for avionics control units, satellite command interfaces, and radiation-tolerant test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 8408901EA 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 logic solutions, with decades of heritage in military and aerospace component development.
The 8408901EA belongs to TI's SN54HC logic family, engineered specifically for high-stability, wide-temperature digital control in defense, space, and critical infrastructure systems where failure is not an option.
FAQ
What is the operating temperature range of the 8408901EA?
The 8408901EA is rated for –55°C to +125°C operation, meeting MIL-PRF-38535 Class B environmental screening requirements. This range is validated through temperature cycling and burn-in testing, ensuring reliable performance in engine bays, satellite payloads, and other thermally extreme environments where the 8408901EA is deployed.
Does the 8408901EA support 3.3 V logic systems?
Yes, the 8408901EA operates across 2 V to 6 V, including full compatibility with 3.3 V supply rails. At 3.3 V, it maintains guaranteed VOH ≥ 2.9 V and VOL ≤ 0.4 V under load, enabling direct interfacing with 3.3 V microcontrollers and FPGAs without level translation - a key capability leveraged in modern 8408901EA-based avionics subsystems.
Is the 8408901EA pin-compatible with commercial SN74HC175 variants?
No - the 8408901EA uses the CDIP-16 package (J), while commercial SN74HC175 variants commonly use SOIC (D), SSOP (DB), or TSSOP (PW) packages. Although functionally identical and electrically compatible, physical pin pitch, body size, and mounting method differ; PCB layout must match the 24.38 mm × 6.92 mm CDIP footprint specified for the 8408901EA.
What is the maximum clock frequency supported by the 8408901EA?
The 8408901EA supports up to 36 MHz maximum clock frequency at 6 V (per TI SCLS299F Rev F, Section 6.5). At 5 V, fmax is 25 MHz, and at 2 V, it drops to 5 MHz. These values are measured under CL = 50 pF loading and define the upper bound for reliable synchronous operation in 8408901EA-based shift registers and pattern generators.
How does the clear (CLR) function operate on the 8408901EA?
The 8408901EA features an asynchronous active-low CLR input that forces all four Q outputs to logic low immediately upon assertion, independent of the clock signal. When CLR returns high, subsequent positive clock edges resume normal D-to-Q data transfer. This behavior is confirmed in the TI function table (Section 8.3) and is critical for deterministic reset in 8408901EA-based safety interlock circuits.
8408901EA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54HC
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 60 MHz
- Max Propagation Delay @ V, Max CL:
- 26ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
8408901EA FAQ
1.How can I place an order for 8408901EA through Aetrix?
Please submit a Request for Quotation (RFQ) for 8408901EA 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 8408901EA reliable?
The price and inventory of 8408901EA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8408901EA is usually 5 days.
3.What payment methods are accepted for 8408901EA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8408901EA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8408901EA?
8408901EA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8408901EA 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 8408901EA?
For technical support, including 8408901EA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8408901EA requirements.
6.How does Aetrix verify that 8408901EA is sourced from the original manufacturer or authorized distributors?
All 8408901EA 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 8408901EA meets industry standards.
7.What is the process for return or replacement of 8408901EA?
All 8408901EA units undergo pre-shipment inspection (PSI). If there is an issue with 8408901EA, 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 8408901EA part is unused and in its original packaging.
Return procedure for 8408901EA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
8408901EA Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
