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Nexperia USA Inc. 74HC259BQ-Q100,115
- Part No.:
- 74HC259BQ-Q100,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Latches
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
74HC259BQ-Q100,115.pdf
- Description:
- IC LATCH 8BIT ADDRESS 16DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,047
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Product details
Overview
74HC259BQ-Q100 from Nexperia is an automotive-grade 8-bit addressable latch with four configurable operating modes: addressable latch, memory, 3-to-8 demultiplexer, and reset. It operates across 2.0 V–6.0 V supply, supports -40 °C to +125 °C ambient, and features CMOS-level inputs. Used in automotive body control modules for selective LED driver enablement and I/O expansion.
For engineers reviewing the 74HC259BQ-Q100 datasheet, 74HC259BQ-Q100 pinout, 74HC259BQ-Q100 application, or 74HC259BQ-Q100 equivalent, this device offers deterministic address-selective latching, simultaneous reset capability, TTL-compatible variants (74HCT259BQ-Q100), and AEC-Q100 Grade 1 qualification - critical for automotive signal routing and memory-mapped peripheral control.
Technical Context
The device implements a combinational 3-bit address decoder driving eight independent D-type latches, each with individually selectable write-enable via LE and MR control logic. Its functional table defines strict mode selection based on LE/MR logic states, enabling deterministic output behavior without race conditions.
All eight Q outputs are buffered, actively driven, and electrically isolated during non-addressed modes. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors - a key requirement in mixed-voltage automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.0 V to 6.0 V - supports wide-range 3.3 V and 5 V automotive rails without level-shifting. |
| Operating temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Propagation delay | 17 ns (typ) at VCC = 6.0 V - enables reliable timing in 20+ MHz address/data strobe sequences. |
| Output drive | ±25 mA - sufficient to directly drive LEDs, small relays, or MOSFET gates without external buffers. |
| Input leakage | ±1 μA max - ensures stable logic levels in high-impedance automotive sensor interface circuits. |
| Power dissipation | 500 mW (max) in DHVQFN16 package - thermally optimized for compact ECU designs with limited airflow. |
Pinout & Package
DHVQFN16 package (SOT763-1): 2.5 × 3.5 × 0.85 mm body, side-wettable flanks for AOI-compliant solder joint inspection, no leads, 16-terminal surface-mount construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Primary 0 V return path; thermal pad not electrically required but may be floated or tied to GND. |
| 2–3, 15–16 (A0–A2, MR, VCC) | Address & control inputs / supply | A0–A2 select one of eight latches; MR (active LOW) forces all Q outputs LOW; VCC powers internal logic. |
| 4–7, 9–12 (Q0–Q7) | Latched output terminals | Eight individually accessible, actively driven outputs - each mirrors D input only when addressed. |
| 13 (D) | Data input | Serial data source for latch loading or demux channel; referenced to VCC/GND logic thresholds. |
| 14 (LE) | Latch enable | Active LOW edge-triggered control - initiates address decoding and data capture into selected latch. |
Key Features
| Feature | Design Value |
|---|---|
| Four-mode operation | Configurable as addressable latch, memory hold, active-HIGH 3-to-8 decoder, or global reset - eliminates need for external mode logic. |
| CMOS input compatibility | VIH = 3.15 V (min) at VCC = 4.5 V - ensures robust noise margin against automotive transients and crosstalk. |
| ESD protection | HBM > 2000 V, CDM > 1000 V - meets stringent automotive board-level ESD immunity requirements. |
| Clamp diode inputs | Enables direct connection to 12 V signals using series current-limiting resistors - simplifies mixed-voltage interface design. |
| Side-wettable flanks | DHVQFN16 package supports automated optical inspection of solder joints - improves manufacturing yield in automotive SMT lines. |
Applications
| Automotive Body Control Unit | LED Driver Enable Matrix |
|---|---|
Use Scenario: Selectively energize individual LED strings in headlamp or interior lighting clusters based on CAN message commands. IC Role / Device Role / Timing Role: Addressable latch stores enable bits per LED channel; LE synchronizes updates from microcontroller GPIO. Use Value: Reduces MCU GPIO count by 8× while maintaining independent on/off control and fast update latency (<50 ns). |
Use Scenario: Drive 8-channel constant-current LED drivers in adaptive front-lighting systems (AFS) with dynamic beam shaping. IC Role / Device Role / Timing Role: Acts as demultiplexer - D input carries PWM-modulated enable signal routed to one Q output per address. Use Value: Enables single-PWM-source control of multiple LED zones without external logic gates or multiplexers. |
| Engine Control Module I/O Expansion | Automotive Diagnostic Interface |
Use Scenario: Expand digital output capability for solenoid valve actuation or sensor bias control in compact ECU designs. IC Role / Device Role / Timing Role: Latch stores command bits from SPI-shifted data; MR provides fail-safe deactivation during fault conditions. Use Value: Provides hardware-based, glitch-free output hold during MCU reset or communication loss - critical for safety-critical actuation. |
Use Scenario: Route diagnostic signals (e.g., UDS test pulses) to specific vehicle subsystems via standardized OBD-II pin mapping. IC Role / Device Role / Timing Role: Functions as addressable switch - selects one of eight diagnostic paths using A0–A2 and LE strobe. Use Value: Eliminates mechanical relay bank; achieves <100 ns path selection accuracy for time-sensitive diagnostic protocols. |
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 |
|---|---|---|---|
| 74HCT259BQ-Q100 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and packaging. | Better interoperability with legacy 5 V TTL microcontrollers and logic families without level shifters. | Select when interfacing to 5 V MCU GPIOs or mixed-logic systems where VIH threshold must be ≤2.0 V. |
| SN74LV259APWR | Lower VCC range (1.65–5.5 V); LV logic family; non-automotive grade (no AEC-Q100 qualification). | Limited to industrial or infotainment subsystems where automotive qualification is not required. | Choose only for cost-sensitive non-safety applications with 1.8 V/3.3 V supply constraints and no temperature or reliability demands beyond -40 °C to +85 °C. |
Compared with 74HC259BQ-Q100, the 74HCT259BQ-Q100 offers guaranteed TTL input compatibility at 5 V while retaining identical automotive qualification and timing; SN74LV259APWR trades AEC-Q100 compliance and extended temperature support for lower voltage operation and reduced static power, making it unsuitable for powertrain or chassis control use cases.
Availability
74HC259BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control units, engine management systems, and LED lighting controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC259BQ-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, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HC259-Q100 product line delivers AEC-Q100 qualified, functionally robust addressable latches designed specifically for automotive signal routing, I/O expansion, and fail-safe peripheral control in harsh environments.
FAQ
What is the difference between 74HC259BQ-Q100 and 74HCT259BQ-Q100?
The 74HC259BQ-Q100 uses CMOS-level inputs (VIH ≥ 3.15 V at VCC = 4.5 V), while the 74HCT259BQ-Q100 has TTL-compatible inputs (VIH ≥ 2.0 V). Both share identical pinout, timing, packaging, and AEC-Q100 Grade 1 qualification. The HCT variant is preferred for interfacing with legacy 5 V TTL logic or microcontrollers lacking CMOS-compatible output drive strength.
Can 74HC259BQ-Q100 operate reliably at 2.0 V supply?
Yes - the device is fully specified down to 2.0 V supply, with guaranteed VIH = 1.5 V (min) and VOL = 0.1 V (max) at IO = 4.0 mA. Propagation delay increases to 185 ns (max) at 2.0 V, but all functional modes remain operational across the full -40 °C to +125 °C temperature range.
How does the reset (MR) pin behave during power-up?
MR is active LOW and asynchronous. During power-up, if MR remains HIGH (≥VCC), outputs retain their previous state or float unpredictably until first valid LE pulse. For deterministic initialization, MR should be held LOW until VCC stabilizes, then released to HIGH before issuing first LE strobe - ensuring all Q outputs start in known LOW state.
Is the thermal pad (Pin 1) required to be soldered or grounded?
No - the exposed thermal pad (Pin 1) has no electrical function and requires no solder connection. If soldered, it must remain electrically floating or be connected to GND; connecting to any other net violates the datasheet specification and may cause latch-up or parametric failure.
74HC259BQ-Q100,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- D-Type, Addressable
- Circuit:
- 1:8
- Output Type:
- Standard
- Voltage - Supply:
- 2V ~ 6V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 17ns
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DHVQFN (2.5x3.5)
74HC259BQ-Q100,115 FAQ
1.How can I place an order for 74HC259BQ-Q100,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC259BQ-Q100,115 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 74HC259BQ-Q100,115 reliable?
The price and inventory of 74HC259BQ-Q100,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC259BQ-Q100,115 is usually 5 days.
3.What payment methods are accepted for 74HC259BQ-Q100,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC259BQ-Q100,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC259BQ-Q100,115?
74HC259BQ-Q100,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC259BQ-Q100,115 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 74HC259BQ-Q100,115?
For technical support, including 74HC259BQ-Q100,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC259BQ-Q100,115 requirements.
6.How does Aetrix verify that 74HC259BQ-Q100,115 is sourced from the original manufacturer or authorized distributors?
All 74HC259BQ-Q100,115 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 74HC259BQ-Q100,115 meets industry standards.
7.What is the process for return or replacement of 74HC259BQ-Q100,115?
All 74HC259BQ-Q100,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC259BQ-Q100,115, 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 74HC259BQ-Q100,115 part is unused and in its original packaging.
Return procedure for 74HC259BQ-Q100,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC259BQ-Q100,115 Tags
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