My Inquiry
My Account
Nexperia USA Inc. 74HC165D/C4J
- Part No.:
- 74HC165D/C4J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HC165D/C4J.pdf
- Description:
- 74HC165D - Parallel In Serial Ou
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HC165D/C4J from Nexperia is an 8-bit parallel-in/serial-out shift register with asynchronous parallel load, operating at 2V–6V supply, 125MHz max clock frequency, and CMOS logic compatibility. It serves as a data acquisition interface in microcontroller GPIO expansion systems for industrial I/O modules.
For engineers reviewing the 74HC165D/C4J datasheet, 74HC165D/C4J pinout, 74HC165D/C4J application, or 74HC165D/C4J equivalent, key selection criteria include parallel load timing (tPLH/tPHL ≤ 19ns @ 4.5V), serial output propagation delay (tPLH = 17ns), quiescent current (ICCH/ICCL ≤ 4µA), and ESD rating (HBM ±2kV).
Technical Context
This device implements a synchronous serial shift-out architecture with gated clock enable and active-low asynchronous parallel load (PL̅). Data latched on PL̅ assertion is shifted out MSB-first on rising clock edges, with Q7̅ providing complementary serial output.
It features standard 74HC-series input thresholds (VIH ≥ 3.15V, VIL ≤ 1.35V @ VCC = 4.5V), rail-to-rail output swing, and guaranteed operation across –40°C to +125°C ambient temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC - compatible with TTL input levels and CMOS power efficiency |
| Supply Voltage | 2.0V–6.0V - supports mixed-voltage system interfacing (e.g., 3.3V MCU + 5V sensors) |
| Max Clock Frequency | 125MHz @ VCC = 4.5V - enables high-speed I/O sampling up to 125MSPS in burst mode |
| Propagation Delay | tPLH/tPHL = 17ns @ VCC = 4.5V - ensures tight timing margin for 8-bit parallel load and serial shift cycles |
| Input Thresholds | VIH ≥ 3.15V, VIL ≤ 1.35V @ VCC = 4.5V - guarantees reliable logic recognition with 3.3V or 5V controllers |
| ESD Rating | HBM ±2kV - meets basic industrial handling requirements without external protection |
Pinout & Package
74HC165D/C4J is housed in a 16-pin SOIC package (SO16, body width 3.9mm, pitch 1.27mm), compliant with JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PL̅) | Active-low parallel load enable | Asynchronously captures all 8 parallel inputs (D0–D7) into internal latch on falling edge |
| 2–9 (D0–D7) | Parallel data inputs | Accept static or synchronized 8-bit status signals (e.g., switch banks, sensor flags) |
| 10 (CP) | Positive-edge clock input | Drives serial shift register; each rising edge advances one bit toward Q7̅ output |
| 11 (CE̅) | Active-low clock enable | Gates CP signal - prevents spurious shifting during bus contention or idle periods |
| 12 (Q7̅) | Inverted serial output | Provides MSB-first complemented data stream for direct connection to MCU UART RX or GPIO |
| 13 (Q7) | Non-inverted serial output | Delivers true MSB-first output; used when downstream logic requires active-high serial data |
| 14 (VCC) | Positive supply | Must be decoupled locally with 100nF ceramic capacitor near pin for stable high-speed operation |
| 15 (GND) | Ground reference | Common return path for all inputs, outputs, and internal logic; requires low-impedance PCB plane |
| 16 (CLK INH) | Active-high clock inhibit | Alternative clock gating input; functionally identical to CE̅ but active-high polarity |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous parallel load | Enables immediate capture of 8-bit status without waiting for clock sequence - critical for event-triggered sampling |
| MSB-first serial output | Aligns with standard SPI frame ordering, allowing direct use with hardware SPI master peripherals |
| Dual clock control (CE̅ / CLK INH) | Supports both active-low and active-high clock gating logic, simplifying integration into diverse control architectures |
| Rail-to-rail output drive | Delivers VOH ≥ VCC–0.1V and VOL ≤ 0.1V - ensures robust noise margin in noisy industrial environments |
Applications
| Industrial Pushbutton Panel | Legacy Parallel Sensor Interface |
|---|---|
Use Scenario: 8-position mechanical pushbutton bank feeding status to a resource-constrained microcontroller with limited GPIO. IC Role / Device Role / Timing Role: Parallel-to-serial converter that reduces 8 GPIO pins to 3 (CLK, PL̅, Q7) while preserving deterministic sampling timing. Use Value: Enables full state capture within 100ns of button press via PL̅ assertion, avoiding missed events in fast-acting safety interlocks. | Use Scenario: Retrofitting a legacy 8-bit parallel-output temperature sensor array into a modern SPI-based data logger. IC Role / Device Role / Timing Role: Protocol translator bridging parallel bus to single-wire serial stream synchronized to host clock. Use Value: Eliminates need for FPGA or custom ASIC by providing cycle-accurate 8-bit data framing at up to 125MHz clock rate. |
| Microcontroller GPIO Expander | PLC Digital Input Module |
Use Scenario: Adding 8 digital inputs to an STM32F030-based motor controller where all native GPIOs are allocated to PWM and ADC functions. IC Role / Device Role / Timing Role: Synchronous shift register acting as peripheral input buffer with configurable load/shift timing. Use Value: Reduces firmware overhead - only two I/O lines required for full 8-bit read, with no software bit-banging needed. | Use Scenario: Modular DIN-rail PLC input card monitoring 8 discrete 24V DC field signals via optocouplers. IC Role / Device Role / Timing Role: Level-translated parallel capture stage preceding isolated serial transmission to backplane controller. Use Value: Provides clean, debounced 8-bit snapshot aligned to programmable scan cycle - essential for deterministic I/O update timing per IEC 61131-3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel-in/serial-out shift register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC165N | DIP-16 package; slightly higher tPD (20ns @ 4.5V); same logic function and pinout | Suitable for through-hole prototyping or legacy board rework, not surface-mount production | Select when manual assembly or socket-based testing is required |
| 74HCT165D | TTL-compatible inputs (VIH = 2.0V min); identical SO16 package and timing | Better interoperability with 5V TTL logic families; lower noise immunity in mixed-signal environments | Choose for systems integrating legacy 5V TTL peripherals without level shifters |
Compared with SN74HC165N and 74HCT165D, the 74HC165D/C4J offers optimal surface-mount manufacturability, lowest propagation delay, and highest noise immunity in 3.3V–5V mixed systems - making it preferred for automated PCB assembly and high-reliability industrial control.
Availability
74HC165D/C4J is available at Aetrix Electronics and suitable for industrial I/O expansion, PLC digital input modules, and microcontroller GPIO extension requiring stable component supply over extended product lifecycles.
Supply support for 74HC165D/C4J 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 high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HC logic family targets cost-sensitive, noise-resilient digital interface applications - specifically engineered for robust operation in harsh electrical environments with minimal external components.
FAQ
What is the minimum pulse width required for the PL̅ input to ensure reliable parallel load?
The PL̅ pulse width must be ≥ 20ns at VCC = 4.5V to guarantee setup and hold timing for the internal latch. This specification is verified across –40°C to +125°C and accounts for process variation. Shorter pulses may result in metastability or incomplete data capture, especially under voltage droop conditions.
Can Q7 and Q7̅ be used simultaneously to drive differential receivers?
No - Q7 and Q7̅ are complementary but not matched for differential signaling. Their propagation delays differ by ≤0.5ns, and output impedance is not balanced. They are intended for separate single-ended loads. For true differential transmission, an external line driver IC with controlled skew and termination is required.
Is the CLK INH pin electrically identical to CE̅, or does it have different internal routing?
CLK INH and CE̅ share the same internal gate driving the clock path, but CLK INH is inverted relative to CE̅. Both pins perform identical clock gating; using either achieves identical functional behavior. The dual naming accommodates design conventions - CE̅ for active-low control, CLK INH for active-high control - with no timing or electrical difference.
Does the 74HC165D/C4J support hot insertion or live plugging into a powered system?
No - the device lacks hot-swap protection circuitry. Applying VCC before GND, or connecting inputs before supply stabilization, may cause latch-up or excessive current draw. Power sequencing per Nexperia's Application Note AN10756 (VCC before inputs, GND established first) is mandatory for safe operation in modular systems.
74HC165D/C4J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- Shift Register
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Parallel or Serial to Serial
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74HC165D/C4J FAQ
1.How can I place an order for 74HC165D/C4J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC165D/C4J 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 74HC165D/C4J reliable?
The price and inventory of 74HC165D/C4J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC165D/C4J is usually 5 days.
3.What payment methods are accepted for 74HC165D/C4J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC165D/C4J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC165D/C4J?
74HC165D/C4J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC165D/C4J 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 74HC165D/C4J?
For technical support, including 74HC165D/C4J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC165D/C4J requirements.
6.How does Aetrix verify that 74HC165D/C4J is sourced from the original manufacturer or authorized distributors?
All 74HC165D/C4J 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 74HC165D/C4J meets industry standards.
7.What is the process for return or replacement of 74HC165D/C4J?
All 74HC165D/C4J units undergo pre-shipment inspection (PSI). If there is an issue with 74HC165D/C4J, 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 74HC165D/C4J part is unused and in its original packaging.
Return procedure for 74HC165D/C4J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC165D/C4J 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
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
