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Nexperia USA Inc. 74HCT164BQ,115
- Part No.:
- 74HCT164BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74HCT164BQ,115.pdf
- Description:
- IC 8BIT SHIFT REGISTER 14-DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,813
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Product details
Overview
74HCT164BQ,115 from Nexperia is an 8-bit serial-in/parallel-out shift register with TTL-compatible inputs, dual gated serial data inputs (DSA and DSB), asynchronous master reset (MR), and edge-triggered clock (CP) operating on LOW-to-HIGH transitions. It delivers Q0–Q7 parallel outputs with guaranteed operation from -40 °C to +125 °C and supply voltage 4.5–5.5 V, used in LED matrix drivers and microcontroller GPIO expansion.
For engineers reviewing the 74HCT164BQ,115 datasheet, 74HCT164BQ,115 pinout, 74HCT164BQ,115 application, or 74HCT164BQ,115 equivalent, this page provides verified functional behavior, thermal-enhanced DHVQFN14 package details, timing margins at 5 V, TTL-level input thresholds, and validated alternatives for industrial control and display interface designs.
Technical Context
The device implements a synchronous 8-stage D-type flip-flop chain with gated serial data selection: either DSA or DSB can serve as active-HIGH enable for the other, enabling flexible data routing. Its asynchronous MR input forces all Q outputs LOW independently of CP or data state.
It uses standard CMOS silicon with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), supports 50 pF load capacitance, and achieves tpd = 36 ns typical (VCC = 4.5 V, CL = 50 pF) with fmax = 55 MHz typical under same conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input levels, CMOS output drive, 4.5–5.5 V operation |
| Function | 8-bit serial-in/parallel-out shift register with dual gated data inputs and async reset |
| Propagation Delay | 36 ns typical (CP to Qn, VCC = 4.5 V, CL = 50 pF) - determines max clock rate in high-speed data latching |
| Supply Voltage Range | 4.5–5.5 V - ensures compatibility with 5 V logic systems and robust noise margin |
| Operating Temperature | -40 °C to +125 °C - qualified for extended industrial and automotive-adjacent environments |
| Output Drive | ±4.0 mA (VOH/VOL @ VCC = 4.5 V) - sufficient to directly drive LEDs or interface with 74-series inputs |
| Input Clamp Diodes | Integrated - enables safe interfacing to voltages exceeding VCC using current-limiting resistors |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, no leads, 14 terminals, exposed thermal pad (non-soldered by default, floating or GND optional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DSA) | Serial data input A | Primary serial data path; active when DSB = HIGH - enables gated data entry |
| 2 (DSB) | Serial data input B | Secondary serial data path; active when DSA = HIGH - supports dual-source serial streams |
| 3 (Q0) | Parallel output 0 | LSB of 8-bit parallel word; shifts out first after initial clock edge |
| 4 (Q1) | Parallel output 1 | Second bit in shift sequence; updated on each subsequent CP rising edge |
| 5 (Q2) | Parallel output 2 | Third bit; synchronized to CP rising edge with 36 ns typical delay |
| 6 (Q3) | Parallel output 3 | Fourth bit; maintains consistent timing across all Q outputs |
| 7 (GND) | Ground reference | 0 V return path for all internal circuitry and output loads |
| 8 (CP) | Clock input | Edge-triggered; data shifts on LOW-to-HIGH transition - defines timing resolution |
| 9 (MR) | Master reset | Asynchronous active-LOW; clears all Q outputs to LOW regardless of CP or data state |
| 10 (Q4) | Parallel output 4 | Fifth bit; part of full 8-bit parallel bus (Q0–Q7) for latch-and-display use |
| 11 (Q5) | Parallel output 5 | Sixth bit; enables direct connection to 8-bit microcontroller port or LED driver array |
| 12 (Q6) | Parallel output 6 | Seventh bit; supports cascading via Q7→DSA/DSB of next stage |
| 13 (Q7) | Parallel output 7 | MSB; also usable as serial output for daisy-chaining multiple 74HCT164BQ devices |
| 14 (VCC) | Positive supply | +4.5 to +5.5 V power rail; powers internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Gated dual serial inputs | DSA and DSB act as mutual enables - eliminates need for external AND logic in multi-source serial paths |
| Asynchronous master reset | MR forces Q0–Q7 LOW within 38 ns (VCC = 4.5 V) - enables deterministic initialization without clock dependency |
| TTL-compatible input thresholds | VIH = 2.0 V min, VIL = 0.8 V max at 5 V - ensures reliable interfacing with legacy 5 V microcontrollers and logic families |
| Thermally enhanced DHVQFN14 | 0.85 mm profile with exposed pad - improves thermal resistance by ~30% vs TSSOP14, supporting sustained 5 V operation at +125 °C |
| ESD protection | HBM > 2000 V, CDM > 1000 V - reduces handling sensitivity during PCB assembly and field service |
Applications
| LED Matrix Driver | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving 8×8 monochrome LED grid with row/column scanning using a single microcontroller SPI port. IC Role / Device Role / Timing Role: Serial-to-parallel converter translating SPI data into static column drive signals; clocked synchronously with microcontroller's SCK. Use Value: Reduces required MCU pins from 16 (8 row + 8 column) to 3 (CLK, DATA, LATCH), while maintaining 5 V drive capability for common-anode displays. |
Use Scenario: Adding 8 digital output lines to an STM32F407 with all GPIOs allocated to analog, UART, or PWM functions. IC Role / Device Role / Timing Role: Parallel output latch synchronized to MCU's GPIO toggle or hardware timer output as CP signal. Use Value: Enables deterministic 8-bit output updates with <36 ns skew between Q0–Q7, critical for synchronized peripheral control in motor drives. |
| Industrial I/O Module | Legacy Bus Interface Adapter |
Use Scenario: Isolated digital output module converting Modbus RTU serial commands into 8-channel relay control signals. IC Role / Device Role / Timing Role: Shift register buffering UART-received command bytes before asserting relay drivers; MR used for emergency shutdown. Use Value: Asynchronous MR allows immediate deactivation of all relays independent of ongoing communication - meets SIL-2 functional safety requirements. |
Use Scenario: Adapting Z80 CPU's 8-bit data bus to a 16-bit peripheral requiring serialized configuration writes. IC Role / Device Role / Timing Role: Serial interface translator accepting Z80 WR strobe as CP and data bus bits as DSA/DSB, generating parallel setup words. Use Value: TTL-level inputs match Z80's 5 V logic family; 5.5 V absolute max rating accommodates transient bus overshoot without clamping diode damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit serial-in/parallel-out shift register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT164PW,118 | TSSOP14 package (4.4 mm width); 7.3 mW/K thermal derating above 81 °C vs 9.6 mW/K for BQ | Lower thermal performance at +125 °C ambient; suitable for space-constrained but thermally moderate PCBs | Select when board layout favors TSSOP footprint and peak temperature remains ≤105 °C |
| SN74HCT164DR | Texas Instruments part in SOIC-14; VIH = 2.0 V min, but ICC = 8 μA max (vs 160 μA for Nexperia at +125 °C) | Lower quiescent current beneficial in battery-powered systems; lacks Nexperia's 125 °C qualification | Select for low-power portable designs where ambient temperature stays ≤85 °C |
Compared with 74HCT164PW,118, the 74HCT164BQ,115 offers superior thermal dissipation in high-density layouts; compared with SN74HCT164DR, it provides extended temperature range at the cost of higher leakage current above 85 °C - critical for under-hood or factory-floor deployments.
Availability
74HCT164BQ,115 is available at Aetrix Electronics and suitable for LED matrix drivers, microcontroller GPIO expanders, industrial I/O modules, and legacy bus interface adapters requiring stable component supply across extended temperature ranges.
Supply support for 74HCT164BQ,115 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, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer applications.
The 74HCT164BQ,115 belongs to Nexperia's 74HCT logic family - engineered for seamless integration with legacy 5 V TTL systems while delivering CMOS power efficiency and extended temperature resilience.
FAQ
Can 74HCT164BQ,115 operate at 3.3 V?
No. The 74HCT164BQ,115 is specified only for 4.5–5.5 V operation per its recommended conditions table. At 3.3 V, input thresholds (VIH ≥ 2.0 V) may not be reliably met by 3.3 V logic sources, and VOH drops below 2.4 V - risking downstream logic misreads. Use 74HC164BQ for 2.0–6.0 V flexibility.
What is the function of the exposed pad on the DHVQFN14 package?
The exposed thermal pad (terminal 1 index area) has no electrical function and must remain electrically floating unless explicitly connected to GND. Nexperia states soldering it is optional and, if done, requires the land to be either unconnected or tied to GND - no internal connection exists, and improper biasing risks thermal stress or solder voiding.
How does the dual-input gating (DSA/DSB) improve system design?
DSA and DSB act as mutual enables: when DSB = HIGH, DSA becomes the active data input; when DSA = HIGH, DSB is active. This eliminates external logic gates needed to select between two serial sources - reducing BOM count, PCB area, and propagation delay in applications like dual-sensor data merging or redundant command channels.
Is the master reset (MR) pin 5 V-tolerant when VCC = 5 V?
Yes. MR accepts input voltages up to VCC + 0.5 V per limiting values table, and features integrated clamp diodes. With VCC = 5 V, MR tolerates up to 5.5 V, allowing direct connection to 5 V control signals without series resistors - simplifying reset circuitry in mixed-voltage systems.
74HCT164BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Shift Register
- Output Type:
- Push-Pull
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Serial to Parallel
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74HCT164BQ,115 FAQ
1.How can I place an order for 74HCT164BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT164BQ,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 74HCT164BQ,115 reliable?
The price and inventory of 74HCT164BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT164BQ,115 is usually 5 days.
3.What payment methods are accepted for 74HCT164BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT164BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT164BQ,115?
74HCT164BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT164BQ,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 74HCT164BQ,115?
For technical support, including 74HCT164BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT164BQ,115 requirements.
6.How does Aetrix verify that 74HCT164BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74HCT164BQ,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 74HCT164BQ,115 meets industry standards.
7.What is the process for return or replacement of 74HCT164BQ,115?
All 74HCT164BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT164BQ,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 74HCT164BQ,115 part is unused and in its original packaging.
Return procedure for 74HCT164BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT164BQ,115 Tags
-
SN74HC164DR
Texas Instruments
-
SN74HC595DR
Texas Instruments
-
74HC595PW,118
Nexperia USA Inc.
-
SN74HC165PWR
Texas Instruments
-
HEF4094BT,653
Nexperia USA Inc.
-
74HC595D,118
Nexperia USA Inc.
-
SN74HC595PWR
Texas Instruments
-
74HC165D,653
Nexperia USA Inc.
-
SN74LV165APWR
Texas Instruments
-
74HC595BQ,115
Nexperia USA Inc.
-
74HC165BQ,115
Nexperia USA Inc.
-
CD4094BPWR
Texas Instruments
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