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Nexperia USA Inc. 74AHCT573PW-Q100J
- Part No.:
- 74AHCT573PW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Latches
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT573PW-Q100J.pdf
- Description:
- IC D-TYPE TRANSP SGL 8:8 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,145
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Product details
Overview
74AHCT573PW-Q100 from Nexperia is an automotive-grade octal D-type transparent latch with 3-state outputs, designed for data latching and bus isolation in 5 V TTL-level systems. It features latch enable (LE) and output enable (OE) inputs, operates from −40 °C to +125 °C, supports 4.5–5.5 V supply, and delivers propagation delays as low as 3.5 ns (D→Q, CL = 15 pF). It is used in automotive body control modules for transient input capture and multiplexed bus interfacing.
For engineers reviewing the 74AHCT573PW-Q100 datasheet, 74AHCT573PW-Q100 pinout, 74AHCT573PW-Q100 application, or 74AHCT573PW-Q100 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2.0 V min), 8-bit transparent/latched operation, 3-state output control, and AEC-Q100 Grade 1 qualification for under-hood environments.
Technical Context
This device implements eight independent D-type latches with shared LE and OE controls. Its TTL-input logic thresholds (VIH = 2.0 V, VIL = 0.8 V at VCC = 4.5–5.5 V) ensure compatibility with legacy 5 V microcontroller and peripheral interfaces. The latch operates in two distinct modes: transparent (LE = HIGH, Q follows D) and stored (LE = LOW, Q holds prior state).
Output enable (OE) is active-low and fully decoupled from latch state - enabling high-impedance tri-state operation without altering stored data. All inputs tolerate up to 5.5 V, supporting mixed-voltage translation between 3.3 V logic and 5 V buses while maintaining noise immunity via Schmitt-trigger action on all inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation across automotive battery variations (e.g., cold-crank dips, load-dump transients) |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees reliable recognition of standard TTL logic levels |
| Propagation Delay | 3.5 ns (D→Q, VCC = 5 V, CL = 15 pF) - enables high-speed data capture in real-time control loops |
| Output Drive | ±8 mA (VOH/VOL at VCC = 4.5 V) - sufficient to drive multiple CMOS/TTL loads without external buffers |
| Temperature Range | −40 °C to +125 °C - qualified for engine compartment and powertrain applications per AEC-Q100 Grade 1 |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets automotive assembly and handling requirements |
| Power Dissipation | CPD = 18 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) |
Pinout & Package
TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, side-wettable flanks for AOI-compatible solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable (active LOW) | Asserting LOW places all Q outputs in high-impedance state; does not affect internal latch state |
| 2–9 (D0–D7) | Data inputs | Asynchronous inputs accepted during LE = HIGH; sampled and held on LE falling edge |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry and I/O; required for stable logic thresholds |
| 11 (LE) | Latch enable (active HIGH) | HIGH enables transparency; LOW captures and holds D-input values at next falling edge |
| 12–19 (Q0–Q7) | Tri-state data outputs | Reflect latched D values when OE = LOW; enter high-Z when OE = HIGH |
| 20 (VCC) | Positive supply | Primary power rail (4.5–5.5 V); powers internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with full reliability testing (HTOL, TC, UHAST, ESD) |
| TTL-compatible input levels | VIH ≤ 2.0 V and VIL ≥ 0.8 V at 5 V supply - interoperable with legacy 5 V microcontrollers and peripherals |
| Overvoltage-tolerant inputs | Withstand up to 5.5 V regardless of VCC - enables safe interfacing with higher-voltage subsystems |
| Tri-state output control | Single OE pin disables all eight outputs simultaneously - simplifies bus arbitration and reduces signal contention |
| Schmitt-trigger inputs | Hysteresis on all D and control pins - suppresses noise-induced glitches on slow or noisy PCB traces |
Applications
| Automotive Body Control Unit (BCU) | Instrument Cluster Display Interface |
|---|---|
Use Scenario: Capturing switch status (door open/close, seat position) under electrically noisy vehicle harness conditions. IC Role / Device Role / Timing Role: Transparent latch buffers raw sensor inputs before MCU sampling; LE synchronized to MCU read cycle. Use Value: Prevents metastability and bounce-induced false triggers by holding stable values during MCU interrupt latency. | Use Scenario: Isolating a microcontroller's parallel display data bus from shared CAN/LIN communication lines. IC Role / Device Role / Timing Role: 3-state latch acts as bidirectional bus buffer; OE controlled by display controller to prevent bus contention. Use Value: Enables time-multiplexed use of same GPIO pins for display updates and serial comms without hardware redesign. |
| Engine Control Module (ECM) Diagnostic Port | ADAS Camera Power Sequencing |
Use Scenario: Latching diagnostic LED driver enable signals during firmware update where main MCU resets. IC Role / Device Role / Timing Role: Stores last valid configuration state via LE hold; maintains LED status independently of MCU reset. Use Value: Provides fail-safe visual indication of update progress or error state even during MCU reinitialization. | Use Scenario: Controlling power-on sequencing of image sensor and ISP voltage rails in rear-view camera modules. IC Role / Device Role / Timing Role: Latches enable signals from timing controller to coordinate 1.2 V, 1.8 V, and 2.8 V rail activation order. Use Value: Ensures strict monotonic ramp-up per sensor datasheet, preventing latch-up or initialization failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT573D-Q100 | SO20 package (SOT163-1), wider 7.5 mm body, higher thermal resistance (12.3 mW/K derating above 109 °C) | Better suited for through-hole prototyping or legacy PCBs with SOIC footprints; lower board density | Select when manual soldering, thermal margin > 109 °C not required, or SO20 footprint already allocated |
| 74AHCT573BQ-Q100 | DHVQFN20 package (SOT764-1), 2.5 × 4.5 mm, side-wettable flanks, lower thermal resistance (12.9 mW/K above 111 °C) | Optimized for space-constrained ADAS modules requiring automated optical inspection and enhanced thermal performance | Select for high-density automotive PCBs where AOI traceability and thermal efficiency are critical |
Compared with the TSSOP20-packaged 74AHCT573PW-Q100, the SO20 variant offers easier hand-soldering but lower board density, while the DHVQFN20 provides superior thermal dissipation and AOI support at the cost of reflow-only assembly.
Availability
74AHCT573PW-Q100 is available at Aetrix Electronics and suitable for automotive body control units, instrument cluster interfaces, and engine control module diagnostics requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for 74AHCT573PW-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 global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74AHCT-Q100 series is engineered specifically for automotive applications demanding AEC-Q100 Grade 1 reliability, wide temperature operation, and robust noise immunity in safety-critical electronic control units.
FAQ
What is the difference between 74AHCT573PW-Q100 and 74AHC573PW-Q100?
The 74AHCT573PW-Q100 uses TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), making it interoperable with legacy 5 V microcontrollers. In contrast, the 74AHC573PW-Q100 uses CMOS thresholds (VIH ≈ 3.85 V at 5.5 V), requiring higher input voltages. Both share identical pinout, 3-state outputs, latch functionality, and AEC-Q100 qualification.
Can 74AHCT573PW-Q100 operate at 3.3 V supply?
No - the 74AHCT573PW-Q100 is specified only for 4.5 V to 5.5 V operation per its recommended conditions. At 3.3 V, VIH and VIL thresholds become undefined, and output drive strength degrades significantly. For 3.3 V systems, use the 74AHC573PW-Q100 variant instead.
How does the latch enable (LE) timing work during data capture?
Data is transparently passed to outputs while LE = HIGH. On the HIGH-to-LOW transition of LE, the device samples D0–D7 one setup time (tsu = 3.5 ns min) before the edge and holds that value. Hold time (th = 1.5 ns min) must be observed after the edge to avoid metastability - both values are guaranteed across −40 °C to +125 °C.
Is the GND pin (Pin 10) electrically connected to the exposed pad in TSSOP20?
No - Pin 10 is the functional ground connection for logic and I/O. The TSSOP20 package (SOT360-1) has no exposed thermal pad; grounding is achieved solely through Pin 10. Unlike DHVQFN packages, there is no auxiliary thermal pad to consider in layout or soldering.
74AHCT573PW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- D-Type Transparent Latch
- Circuit:
- 8:8
- Output Type:
- Tri-State
- Voltage - Supply:
- 4.5V ~ 5.5V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 3.5ns
- Current - Output High, Low:
- 8mA, 8mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74AHCT573PW-Q100J FAQ
1.How can I place an order for 74AHCT573PW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT573PW-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 74AHCT573PW-Q100J reliable?
The price and inventory of 74AHCT573PW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT573PW-Q100J is usually 5 days.
3.What payment methods are accepted for 74AHCT573PW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT573PW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT573PW-Q100J?
74AHCT573PW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT573PW-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 74AHCT573PW-Q100J?
For technical support, including 74AHCT573PW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT573PW-Q100J requirements.
6.How does Aetrix verify that 74AHCT573PW-Q100J is sourced from the original manufacturer or authorized distributors?
All 74AHCT573PW-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 74AHCT573PW-Q100J meets industry standards.
7.What is the process for return or replacement of 74AHCT573PW-Q100J?
All 74AHCT573PW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT573PW-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 74AHCT573PW-Q100J part is unused and in its original packaging.
Return procedure for 74AHCT573PW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT573PW-Q100J Tags
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SN74HC573APWR
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SN74AHC573PWR
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74VHC573MTCX
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MC74LCX573DTR2G
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74AUP1G373GW,125
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NC7SZ373P6X
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