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Nexperia USA Inc. 74HCT173D-Q100J
- Part No.:
- 74HCT173D-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74HCT173D-Q100J.pdf
- Description:
- 74HCT173D-Q100/SOT109/SO16
- Quantity:
- Payment:
- Shipping:
Inventory:3,493
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Product details
Overview
74HCT173D-Q100 from Nexperia is a quad positive-edge-triggered D-type flip-flop with 3-state outputs, asynchronous master reset (active HIGH), dual input enable (E1/E2, active LOW), and dual output enable (OE1/OE2, active LOW). It operates from 4.5 V to 5.5 V, supports -40 °C to +125 °C automotive temperature range, and delivers 20 ns typical propagation delay (VCC = 4.5 V, CL = 50 pF) in automotive-grade logic control paths.
For engineers reviewing the 74HCT173D-Q100 datasheet, 74HCT173D-Q100 pinout, 74HCT173D-Q100 application, or 74HCT173D-Q100 equivalent, this device serves as a synchronized register for bus interface buffering, parallel data latching, and fault-tolerant state retention in engine control units, ADAS sensor hubs, and body electronics modules where AEC-Q100 Grade 1 compliance and TTL-level input compatibility are required.
Technical Context
The 74HCT173D-Q100 implements four independent edge-triggered D flip-flops sharing common clock (CP), master reset (MR), and dual enable controls. Its TTL-compatible inputs accept 2.0 V minimum VIH at VCC = 4.5 V, enabling direct interfacing with legacy microcontroller GPIOs without level shifting. The asynchronous MR overrides all clock and data activity to force Qn = LOW.
Output enable logic is fully decoupled from internal register state: OE1/OE2 assertion places Q0–Q3 into high-impedance mode without altering stored data. Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input thresholds, CMOS output drive |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches automotive 5 V rail with ±10 % tolerance margin |
| Operating Temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood applications |
| Propagation Delay (tpd) | 20 ns typ @ VCC = 4.5 V, CL = 50 pF - Enables ≤20 MHz synchronous operation in real-time control loops |
| Output Drive | ±6.0 mA @ VOH/VOL - Sufficient to drive 10 LS-TTL loads or 50 pF PCB traces directly |
| Input Enable Logic | E1/E2 active LOW - Enables "hold" mode: outputs retain state regardless of CP or Dn transitions |
| Output Enable Logic | OE1/OE2 active LOW - Provides independent 3-state control per output pair (Q0/Q1, Q2/Q3) |
Pinout & Package
74HCT173D-Q100 is housed in a 16-pin SO16 plastic small outline package (SOT109-1), 3.9 mm body width, with standard JEDEC MS-012 footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (OE1, OE2) | Output enable input | Active LOW control for 3-state output pairs; no effect on internal flip-flop state |
| 3–6 (Q0–Q3) | 3-state registered output | Reflects Dn state after positive CP edge when E1=E2=LOW and OE1=OE2=LOW |
| 7 (CP) | Clock input | Positive-edge triggered; LOW-to-HIGH transition samples Dn and updates Qn if enables satisfied |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and I/O; must be low-impedance for noise immunity |
| 9, 10 (E1, E2) | Data enable input | Active LOW; both must be LOW to allow Dn→Qn transfer; either HIGH forces hold mode |
| 11–14 (D0–D3) | Data input | Synchronous parallel load inputs; require 12 ns set-up and 0 ns hold time @ VCC = 4.5 V |
| 15 (MR) | Master reset | Asynchronous active HIGH; forces Q0–Q3 = LOW independent of CP, Dn, or enables |
| 16 (VCC) | Supply voltage | +4.5 V to +5.5 V power rail; bypass capacitor required near pin for transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient with full reliability testing |
| TTL-level input compatibility | VIH(min) = 2.0 V @ VCC = 4.5 V - eliminates need for external level shifters with 5 V MCU I/O |
| Dual independent output enable | OE1 controls Q0/Q1; OE2 controls Q2/Q3 - enables selective bus segment isolation |
| Asynchronous master reset | MR asserts immediately to clear all outputs, critical for fail-safe system initialization |
| Input clamp diodes | Allows safe connection to signals up to VCC + 0.5 V using series current-limiting resistors |
Applications
| Engine Control Unit (ECU) Register Bank | ADAS Camera Sensor Interface |
|---|---|
Use Scenario: Latching sensor status flags and diagnostic codes from multiple analog front-ends before CAN transmission. IC Role / Device Role / Timing Role: Quad D-type register synchronizing asynchronous status bits to the ECU's main clock domain while holding values during interrupt service routines. Use Value: Ensures deterministic sampling of volatile sensor states with 20 ns tpd and guaranteed hold behavior via E1/E2 gating. | Use Scenario: Buffering parallel pixel data from image sensors to an FPGA-based preprocessor with dynamic bus width adjustment. IC Role / Device Role / Timing Role: 3-state output register providing isolated, glitch-free data handoff between sensor and FPGA clock domains. Use Value: OE1/OE2 enable selective activation of Q0/Q1 or Q2/Q3 to match variable FPGA input width, reducing signal contention. |
| Body Control Module (BCM) I/O Expander | Automotive Infotainment Display Driver |
Use Scenario: Extending microcontroller GPIO count to manage door lock actuators, mirror controls, and lighting zones. IC Role / Device Role / Timing Role: Parallel-load register capturing command bytes from SPI-shifted data, then driving 12 V solenoid drivers via level-shifting buffers. Use Value: Asynchronous MR allows global reset of all output states during power-on or fault recovery, ensuring known initial conditions. | Use Scenario: Holding display refresh data for segmented LCD panels requiring stable segment voltage during multiplexing cycles. IC Role / Device Role / Timing Role: Edge-triggered latch capturing frame buffer words from graphics controller, retaining values across blanking intervals. Use Value: 125 °C rating ensures reliable operation near heat-generating display backlight drivers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC173D-Q100 | CMOS-level inputs (VIH = 3.15 V min @ VCC = 4.5 V); higher noise margin but requires level translation with TTL sources | Better for mixed-signal systems with pure CMOS logic; less suitable for direct 5 V MCU GPIO interfacing | Select when interfacing to HC-family logic or when higher noise immunity is prioritized over compatibility |
| SN74HCT173QPWRQ1 | Identical function and pinout; TI's AEC-Q100 Grade 1 variant in TSSOP-16 package | Same electrical specs but different thermal resistance and board space footprint | Choose for design reuse in TI-centric platforms or when TSSOP-16 layout is preferred over SO16 |
Compared with 74HC173D-Q100, the HCT version offers native TTL compatibility for legacy MCU integration, while SN74HCT173QPWRQ1 provides identical functionality in a thermally superior TSSOP package-making the 74HCT173D-Q100 optimal for cost-sensitive SO16 layouts requiring direct 5 V logic interfacing.
Availability
74HCT173D-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS sensor interfaces, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for 74HCT173D-Q100 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
Nexperia is a leading semiconductor manufacturer specializing in high-performance, high-reliability logic, discrete, and power devices, with core expertise in automotive-qualified components.
The 74HCT173D-Q100 belongs to Nexperia's automotive logic portfolio, designed specifically to meet stringent AEC-Q100 requirements for timing-critical data latching and bus isolation in safety-conscious vehicle subsystems.
FAQ
What is the maximum clock frequency supported by the 74HCT173D-Q100?
The 74HCT173D-Q100 supports a maximum clock frequency of 24 MHz at -40 °C to +125 °C ambient (VCC = 4.5 V, CL = 50 pF), derived from its 44 ns maximum propagation delay (tpd) under worst-case automotive conditions. At 25 °C and VCC = 5.0 V with CL = 15 pF, fmax reaches 88 MHz, but system-level timing must account for setup/hold margins and board-level signal integrity.
Can OE1 and OE2 be used independently to control different output pairs?
Yes - OE1 controls the high-impedance state of Q0 and Q1 only, while OE2 controls Q2 and Q3 only. This allows partial bus isolation: for example, Q0/Q1 can remain active while Q2/Q3 enter high-Z during memory-mapped peripheral arbitration. Both OE pins operate asynchronously and do not affect internal flip-flop states.
Does the master reset (MR) override the output enable state?
No - MR forces Q0–Q3 to LOW only when outputs are enabled (OE1=OE2=LOW); if either OE1 or OE2 is HIGH, MR has no effect on output voltage levels (they remain in high-impedance), though internal flip-flop states are still cleared to zero. This preserves bus integrity during reset sequences.
Is there any difference in ESD robustness between 74HCT173D-Q100 and standard commercial-grade 74HCT173?
Yes - the 74HCT173D-Q100 is qualified to AEC-Q100 Grade 1 and specifies HBM ESD >2000 V and CDM ESD >1000 V, verified across the full -40 °C to +125 °C temperature range. Standard commercial versions typically specify these ratings only at 25 °C and lack automotive-grade process validation and lot traceability.
74HCT173D-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HCT173D-Q100J FAQ
1.How can I place an order for 74HCT173D-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT173D-Q100J 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 74HCT173D-Q100J reliable?
The price and inventory of 74HCT173D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT173D-Q100J is usually 5 days.
3.What payment methods are accepted for 74HCT173D-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT173D-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT173D-Q100J?
74HCT173D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT173D-Q100J 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 74HCT173D-Q100J?
For technical support, including 74HCT173D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT173D-Q100J requirements.
6.How does Aetrix verify that 74HCT173D-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HCT173D-Q100J 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 74HCT173D-Q100J meets industry standards.
7.What is the process for return or replacement of 74HCT173D-Q100J?
All 74HCT173D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT173D-Q100J, 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 74HCT173D-Q100J part is unused and in its original packaging.
Return procedure for 74HCT173D-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT173D-Q100J Tags
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SN74HC74DR
Texas Instruments
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74LVC1G74GT,115
Nexperia USA Inc.
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CD4013BM96
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SN74HCT273PWR
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SN74LVC1G74DCUR
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SN74HC574DWR
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74LVC1G74DC,125
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SN74HC273DWR
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SN74HCT574DWR
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SN74LVC1G74DCTR
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