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Nexperia USA Inc. 74VHCT595BQ-Q100X
- Part No.:
- 74VHCT595BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
74VHCT595BQ-Q100X.pdf
- Description:
- IC SHIFT REG 8BIT SISO 16DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,790
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Product details
Overview
74VHCT595BQ-Q100 from Nexperia is an automotive-qualified 8-bit serial-in/parallel-out shift register with storage latches and 3-state outputs, operating from -40 °C to +125 °C. It features separate shift (SHCP) and storage (STCP) clocks, asynchronous master reset (MR), TTL-compatible inputs, and 16-terminal DHVQFN package. Used in LED matrix drivers and automotive body control modules for serial-to-parallel data expansion.
For engineers reviewing the 74VHCT595BQ-Q100 datasheet, 74VHCT595BQ-Q100 pinout, 74VHCT595BQ-Q100 application, or 74VHCT595BQ-Q100 equivalent, key selection criteria include TTL-level input compatibility, 3-state output control via OE, propagation delay ≤10.5 ns at 5 V, AEC-Q100 Grade 1 qualification, and DHVQFN thermal performance for space-constrained automotive PCBs.
Technical Context
This device implements two synchronized but independent 8-bit registers: a serial shift register accepting data on SHCP rising edges and a parallel storage register loaded on STCP rising edges. The separation enables pipelined operation-data shifted in one cycle appears at Q0–Q7 only after the next STCP edge.
Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure interoperability with legacy microcontrollers and logic families, while the 3-state outputs (enabled by active-low OE) support shared bus architectures without external gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | VHCT - TTL-compatible input levels with CMOS output drive and low power consumption |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches standard 5 V automotive and industrial rails; no level-shifting required |
| Propagation Delay (tpd) | ≤10.5 ns (CL = 50 pF, VCC = 5 V) - Enables >90 MHz clock rates for high-throughput serial loading |
| Output Drive | ±8 mA (VOH/VOL guaranteed at 5 V) - Directly drives LEDs or logic inputs without buffer stages |
| 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 handling in automated SMT assembly and field service environments |
Pinout & Package
DHVQFN16 (SOT763-1) package: 2.5 × 3.5 × 0.85 mm body with side-wettable flanks for AOI-compatible solder joint inspection; thermally enhanced for sustained 5 V operation in compact automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Q1) | Parallel output stage 1 | Direct connection to load (e.g., LED anode or MCU GPIO); high-impedance when OE = HIGH |
| 2 (Q2) | Parallel output stage 2 | Stage-aligned with Q0–Q7 for byte-wide data presentation; identical electrical specs across all Qn |
| 3 (Q3) | Parallel output stage 3 | Supports cascaded display or I/O expansion where timing alignment across all 8 outputs is critical |
| 4 (Q4) | Parallel output stage 4 | Guaranteed simultaneous enable/disable with other Qn pins via common OE control |
| 5 (Q5) | Parallel output stage 5 | Used in multiplexed systems requiring precise output hold time (tdis ≤12.0 ns) during state transitions |
| 6 (Q6) | Parallel output stage 6 | Matches Q0–Q7 propagation delay spec (tpd ≤10.5 ns) for deterministic timing in real-time control loops |
| 7 (Q7) | Parallel output stage 7 | MSB of parallel output byte; also feeds internal Q7S for daisy-chaining to next shift register |
| 8 (GND) | Ground reference | Primary return path for all I/O and supply currents; requires low-inductance PCB plane coupling |
| 9 (Q7S) | Serial output | Shifted-out MSB used to cascade to DS of downstream device; supports unlimited chain length with minimal skew |
| 10 (MR) | Master reset | Asynchronous active-LOW clear of shift register only; preserves storage register contents until next STCP |
| 11 (SHCP) | Shift clock | Rising-edge-triggered; controls serial data advancement; minimum pulse width 5.0 ns ensures reliable sampling |
| 12 (STCP) | Storage clock | Rising-edge-triggered latch enable; separates shift and output update phases to prevent glitches |
| 13 (OE) | Output enable | Active-LOW 3-state control; enables bus sharing or blanking during data loading (ten/tdis ≤14.5 ns) |
| 14 (DS) | Serial data input | Accepts TTL-level signals; setup/hold times (tsu/th = 3.0/2.0 ns) compatible with fast MCUs |
| 15 (Q0) | Parallel output stage 0 | LSB of parallel output; same timing and drive as Q1–Q7; used for least-significant bit routing |
| 16 (VCC) | Supply voltage | 5 V nominal rail; decoupling capacitor (≥100 nF) required within 5 mm for stable switching noise margin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including temperature cycling and lifetime reliability testing |
| Separate SHCP and STCP clocks | Enables continuous serial shifting while holding stable parallel outputs - eliminates output glitches during data load |
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V allow direct interface with legacy 5 V microcontrollers and logic without level shifters |
| DHVQFN16 with side-wettable flanks | Enables automated optical inspection (AOI) of solder joints and improves thermal dissipation vs. SO16/TSSOP packages |
| Asynchronous master reset (MR) | Clears shift register independently of STCP, enabling safe initialization without disturbing latched output states |
Applications
| Automotive LED Lighting Control | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Driving 64-channel LED headlamp matrix using four cascaded 74VHCT595BQ-Q100 devices controlled by an ARM Cortex-M7 MCU. IC Role / Device Role / Timing Role: Serial-to-parallel converter that translates SPI data into parallel 8-bit output bytes synchronized to STCP for flicker-free illumination updates. Use Value: Eliminates need for 64 dedicated GPIOs; 10.5 ns tpd ensures sub-microsecond update latency across all channels. |
Use Scenario: Adding 24 digital output points to a DIN-rail mounted PLC via three 74VHCT595BQ-Q100 units on a daughterboard. IC Role / Device Role / Timing Role: Output latch buffer that isolates the PLC's main controller from load transients while supporting hot-swap configuration changes. Use Value: 3-state OE control allows dynamic reconfiguration without powering down the entire I/O subsystem. |
| Automotive Body Control Module | Smart HVAC Panel Interface |
|
Use Scenario: Controlling 16 relays and 8 status LEDs in a vehicle door module using two 74VHCT595BQ-Q100 ICs. IC Role / Device Role / Timing Role: Parallel output driver with MR-initiated safe startup sequence ensuring all outputs default LOW before firmware takes control. Use Value: AEC-Q100 qualification guarantees operation during cold cranking (4.5 V min) and engine heat soak (+125 °C). |
Use Scenario: Scanning 32 tactile buttons and driving 16 segment displays on an automotive HVAC control panel. IC Role / Device Role / Timing Role: Bidirectional shift register node (via Q7S→DS chaining) enabling daisy-chained scan/data paths with single MCU SPI port. Use Value: Cascadable architecture reduces PCB trace count by 75% versus discrete GPIO routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit shift register with storage latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LV595PW-Q100 | Lower VCC range (1.65–5.5 V); LV logic family; higher VOL at 3.3 V (0.55 V max) | Better suited for mixed-voltage 3.3 V/5 V systems; less drive strength than VHCT at 5 V | Select when system uses 3.3 V core logic and requires lower static current (ICC = 20 μA typ) |
| SN74HC595QPWRQ1 | CMOS input thresholds (VIH = 3.85 V min at 5 V); no TTL compatibility; TI packaging (TSSOP) | Requires level-shifting for legacy 5 V TTL sources; identical pinout but different thermal profile | Prefer when sourcing from TI-authorized channels or when HC-family consistency is required across BOM |
Compared with 74LV595PW-Q100 and SN74HC595QPWRQ1, the 74VHCT595BQ-Q100 uniquely delivers TTL-level input compatibility at full 5 V drive strength and DHVQFN thermal performance - critical for automotive modules where signal integrity and thermal reliability coexist.
Availability
74VHCT595BQ-Q100 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O expansion, body control modules, and smart HVAC panel interfaces requiring stable component supply across extended temperature ranges.
Supply support for 74VHCT595BQ-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, reliable components for automotive, industrial, and consumer applications, with leadership in logic, power MOSFETs, and ESD protection.
The 74VHCT595BQ-Q100 belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust serial-to-parallel data conversion in harsh environments where AEC-Q100 compliance and thermal resilience are mandatory.
FAQ
What is the maximum clock frequency supported by the 74VHCT595BQ-Q100?
The device supports up to 170 MHz for both SHCP and STCP at VCC = 5 V and 25 °C (typical), with guaranteed minimum fmax of 90 MHz across -40 °C to +125 °C. This is enabled by balanced propagation delays and low input capacitance (CI = 10 pF max).
Can SHCP and STCP be tied together in this device?
Yes - connecting SHCP and STCP allows synchronous operation, but the shift register will always be one clock pulse ahead of the storage register. This configuration is valid and documented in the functional description, though it eliminates independent control of shift vs. latch timing.
How does the master reset (MR) affect the storage register outputs?
MR asynchronously clears only the 8-bit shift register; it has no effect on the storage register or its Q0–Q7 outputs. Outputs retain their last latched state until the next STCP edge or OE assertion, ensuring glitch-free behavior during reset sequences.
Is the DHVQFN16 package lead-free and RoHS compliant?
Yes - the 74VHCT595BQ-Q100 in SOT763-1 (DHVQFN16) package is lead-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in Nexperia's official product change notices.
74VHCT595BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74VHCT
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Shift Register
- Output Type:
- Tri-State
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Serial to Parallel, Serial
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DHVQFN (2.5x3.5)
74VHCT595BQ-Q100X FAQ
1.How can I place an order for 74VHCT595BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT595BQ-Q100X 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 74VHCT595BQ-Q100X reliable?
The price and inventory of 74VHCT595BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT595BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74VHCT595BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT595BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT595BQ-Q100X?
74VHCT595BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT595BQ-Q100X 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 74VHCT595BQ-Q100X?
For technical support, including 74VHCT595BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT595BQ-Q100X requirements.
6.How does Aetrix verify that 74VHCT595BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74VHCT595BQ-Q100X 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 74VHCT595BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74VHCT595BQ-Q100X?
All 74VHCT595BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT595BQ-Q100X, 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 74VHCT595BQ-Q100X part is unused and in its original packaging.
Return procedure for 74VHCT595BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74VHCT595BQ-Q100X Tags
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