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Nexperia USA Inc. 74HCT259D-Q100,118
- Part No.:
- 74HCT259D-Q100,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Latches
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT259D-Q100,118.pdf
- Description:
- IC LATCH 8BIT ADDRESS 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
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Product details
Overview
74HCT259D-Q100 from Nexperia is an automotive-grade 8-bit addressable latch with TTL-compatible inputs, operating from 4.5 V to 5.5 V across –40 °C to +125 °C. It supports four functional modes-addressable latch, memory, 3-to-8 demultiplexing, and reset-and provides individual Q0–Q7 outputs with 4.0 mA sink/source drive at 4.5 V. It is used in body control modules for selective LED driver enablement and I/O expansion in automotive microcontroller interfaces.
For engineers reviewing the 74HCT259D-Q100 datasheet, 74HCT259D-Q100 pinout, 74HCT259D-Q100 application, or 74HCT259D-Q100 equivalent, this device is selected for deterministic address-based latching, low-power active-HIGH decoding, and AEC-Q100 Grade 1 compliance in harsh-temperature automotive subsystems requiring precise output control without bus contention.
Technical Context
The device implements a dual-path logic architecture: one path routes D input through address decoding (A0–A2) to select a single Qn output in demux mode; another path enables simultaneous write to any addressed latch while preserving others' states in addressable latch mode. MR and LE are asynchronous active-LOW controls with independent timing paths.
Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The SO16 package (SOT109-1) supports standard reflow and AOI-compatible solder joint inspection via side-wettable flanks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 5.5 V - Ensures compatibility with 5 V automotive logic rails and stable operation under load-dump transients. |
| Input Logic Type | TTL-level - Accepts standard 5 V microcontroller GPIO outputs without level-shifting. |
| Propagation Delay (D→Qn) | 23 ns (typ) at VCC = 4.5 V - Enables reliable 20 MHz+ address/data handshaking in real-time control loops. |
| Output Drive Strength | ±4.0 mA at VOH/VOL - Sufficient to directly drive LEDs or small-signal MOSFET gates without external buffers. |
| Operating Temperature | –40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| ESD Rating | HBM >2000 V, CDM >1000 V - Robust against assembly handling and in-system electrostatic events. |
| Power Dissipation Capacitance | 19 pF - Predictable dynamic power consumption for thermal budgeting in dense PCB layouts. |
Pinout & Package
74HCT259D-Q100 uses the SO16 plastic small outline package (SOT109-1), 3.9 mm body width, 16-pin gull-wing lead form, rated for industrial and automotive reflow profiles.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 (A0–A2) | Address Input | Selects one of eight latches or outputs; decoded internally with no external logic required. |
| 4–7, 9–12 (Q0–Q7) | Latch Output | Individually accessible storage bit outputs; each retains state unless explicitly updated or reset. |
| 8 (GND) | Ground Reference | Primary 0 V return for all internal logic and output drivers; must be low-impedance for noise immunity. |
| 13 (D) | Data Input | Source for latch writes or demux data; sampled on LE transition and routed conditionally based on mode. |
| 14 (LE) | Latch Enable | Active-LOW edge-triggered control; initiates address decoding, latch update, or memory hold depending on MR state. |
| 15 (MR) | Master Reset | Asynchronous active-LOW signal forcing all Qn outputs LOW regardless of LE or address state. |
| 16 (VCC) | Supply Voltage | Primary power rail; decoupling capacitor placement near this pin is critical for switching noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Four-mode operation | Single device replaces discrete latch + decoder + reset logic, reducing BOM count and board area in ECU I/O expansion. |
| Addressable latch mode | Enables random-write access to any of eight bits without disturbing others-ideal for configuration register updates in safety-critical systems. |
| Demultiplexer mode | Functions as active-HIGH 3-to-8 decoder with D input controlling output polarity; eliminates need for inverters in LED/relay driver trees. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation at +125 °C ambient, meeting OEM requirements for engine bay and transmission control units. |
| Clamp diode inputs | Permits direct connection to 12 V sensor signals using series resistors-reducing external protection components in mixed-voltage domains. |
Applications
| Body Control Module (BCM) | Instrument Cluster Driver |
|---|---|
Use Scenario: Selective activation of 8-channel LED backlighting for segmented LCD displays under microcontroller command. IC Role / Device Role / Timing Role: Addressable latch holding brightness state per segment; LE synchronized to SPI frame end for glitch-free update. Use Value: Eliminates need for 8 separate GPIOs and reduces firmware overhead by enabling batch-addressed writes with single LE pulse. |
Use Scenario: Driving discrete warning lamps (e.g., ABS, airbag, oil pressure) from a shared MCU port with limited pins. IC Role / Device Role / Timing Role: Demultiplexer routing MCU D-line to one of eight lamp drivers; A0–A2 set by address bus lines. Use Value: Provides deterministic single-output activation with no bus contention, supporting fail-safe lamp test sequences during startup. |
| Power Distribution Unit (PDU) | ADAS Camera Interface |
Use Scenario: Enabling/disabling up to eight 12 V solenoid loads via low-side N-channel MOSFET gates in vehicle door modules. IC Role / Device Role / Timing Role: Latch output drives gate resistors; MR used for emergency shutdown across all channels during fault detection. Use Value: Enables hardware-level fault containment-MR assertion forces all outputs LOW within 23 ns, overriding software state. |
Use Scenario: Configuring I²C slave addresses or GPIO modes for multiple camera sensors sharing a common bus. IC Role / Device Role / Timing Role: Addressable latch storing per-camera configuration bits; updated only when sensor is idle to avoid bus collisions. Use Value: Allows runtime reconfiguration without resetting the entire camera subsystem, improving system availability during OTA updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit addressable latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC259D-Q100 | CMOS-level inputs (VIH ≥ 3.15 V @ 4.5 V); higher noise margin but requires level shifters for 3.3 V MCU interfacing. | Suitable where host controller uses CMOS logic families and supply voltage may drop below 4.5 V. | Select when interfacing to 3.3 V or mixed-voltage systems with level translation; not drop-in for TTL-driven designs. |
| SN74HCT259N | DIP-16 package; identical electrical specs but lacks AEC-Q100 qualification and automotive temperature range. | Restricted to non-automotive industrial or prototyping use due to –40 °C to +85 °C rating and no automotive qualification. | Use only for bench validation or non-safety-critical commercial equipment; not qualified for production automotive deployment. |
Compared with 74HC259D-Q100, the 74HCT259D-Q100 offers guaranteed TTL compatibility and automotive qualification, while SN74HCT259N trades qualification for through-hole assembly flexibility-making the former essential for production ECUs and the latter viable only for lab evaluation.
Availability
74HCT259D-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster design, and power distribution units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74HCT259D-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 delivering high-performance logic, analog, and discrete devices optimized for automotive, industrial, and mobile applications-with emphasis on reliability, efficiency, and AEC-Q100 compliance.
This device belongs to Nexperia's automotive-qualified HC/HCT logic family, designed specifically for robust digital interfacing in electrically noisy, thermally demanding vehicle subsystems where deterministic timing and latch integrity are critical.
FAQ
What is the maximum clock frequency supported by 74HCT259D-Q100 in demultiplexer mode?
The device does not operate on a clock signal-it is purely combinational in demux mode. Propagation delay from D to selected Qn is 23 ns (typ) at 4.5 V, allowing reliable operation with input transitions up to ~20 MHz assuming setup/hold timing is met. No internal clock or maximum toggle rate is specified.
Can MR and LE be asserted simultaneously, and what is the resulting behavior?
Yes-when both MR and LE are LOW, the device enters reset mode per Table 4. All Q0–Q7 outputs go LOW immediately and remain LOW regardless of D or address inputs until MR is deasserted. LE state becomes irrelevant during MR assertion.
Is the SO16 package (SOT109-1) compatible with standard automated optical inspection (AOI)?
Yes-the SOT109-1 package features side-wettable flanks, enabling reliable AOI of solder joints on both lead edges. This meets IPC-A-610 Class 3 requirements for automotive assembly and supports zero-defect manufacturing goals.
Does 74HCT259D-Q100 support hot insertion or live insertion into a powered system?
No-this device lacks hot-swap protection circuitry. Applying VCC before GND, or connecting inputs before power stabilization, may cause latch-up or damage due to internal clamp diode conduction. Power sequencing per manufacturer guidelines is mandatory.
74HCT259D-Q100,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- D-Type, Addressable
- Circuit:
- 1:8
- Output Type:
- Standard
- Voltage - Supply:
- 4.5V ~ 5.5V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 20ns
- Current - Output High, Low:
- 4mA, 4mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74HCT259D-Q100,118 FAQ
1.How can I place an order for 74HCT259D-Q100,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT259D-Q100,118 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 74HCT259D-Q100,118 reliable?
The price and inventory of 74HCT259D-Q100,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT259D-Q100,118 is usually 5 days.
3.What payment methods are accepted for 74HCT259D-Q100,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT259D-Q100,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT259D-Q100,118?
74HCT259D-Q100,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT259D-Q100,118 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 74HCT259D-Q100,118?
For technical support, including 74HCT259D-Q100,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT259D-Q100,118 requirements.
6.How does Aetrix verify that 74HCT259D-Q100,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT259D-Q100,118 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 74HCT259D-Q100,118 meets industry standards.
7.What is the process for return or replacement of 74HCT259D-Q100,118?
All 74HCT259D-Q100,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT259D-Q100,118, 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 74HCT259D-Q100,118 part is unused and in its original packaging.
Return procedure for 74HCT259D-Q100,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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