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Nexperia USA Inc. 74HCT165PW,118
- Part No.:
- 74HCT165PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT165PW,118.pdf
- Description:
- IC 8BIT SHIFT REGISTER 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:77,746
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Product details
Overview
74HCT165PW,118 from Nexperia is an 8-bit parallel-in/serial-out shift register with TTL-compatible inputs, asynchronous parallel load (PL), synchronous serial shift capability, dual complementary outputs (Q7 and Q7), and operation across -40 °C to +125 °C. It enables parallel-to-serial data conversion in microcontroller GPIO expansion, industrial I/O monitoring, and legacy bus interface bridging.
For engineers reviewing the 74HCT165PW,118 datasheet, 74HCT165PW,118 pinout, 74HCT165PW,118 application, or 74HCT165PW,118 equivalent, this device supports high-noise-immunity level shifting (up to 15 V tolerant inputs), operates from 4.5 V to 5.5 V, delivers sub-50 ns propagation delay at 5 V, and features dual serial outputs for cascading or differential signaling.
Technical Context
The 74HCT165PW,118 implements a synchronous 8-stage shift register with edge-triggered clock (CP) and active-low clock enable (CE). Its asynchronous parallel load (PL) allows immediate capture of D0–D7 without clock dependency, enabling latch-and-shift timing control in real-time systems.
It uses standard CMOS silicon with TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), supports 50 pF capacitive loading, and maintains guaranteed output drive (±4 mA) across its full temperature range - critical for robust signal integrity in industrial control backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL logic families and stable operation under rail variation. |
| Propagation delay (tpd) | 17 ns (typ) to Q7 at VCC = 4.5 V - enables reliable 26 MHz maximum clock frequency in high-speed serial data pipelines. |
| Input voltage thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees clean recognition of standard 5 V TTL logic levels without external level-shifting. |
| Output drive strength | ±4.0 mA at VOH/VOL - sufficient to directly drive multiple 74-series inputs or short PCB traces without buffering. |
| Operating temperature | -40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and power supply control applications. |
| ESD protection | HBM > 2000 V, CDM > 1000 V - reduces risk of field failure during handling and board assembly in uncontrolled environments. |
| Power dissipation capacitance | CPD = 35 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi) for thermal budgeting. |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1); 16-pin, 4.4 mm body width, 0.65 mm pitch; lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PL) | Asynchronous parallel load input | Active-LOW signal that immediately loads D0–D7 into register regardless of clock state - used for snapshot acquisition. |
| 2 (CP) | Clock input | LOW-to-HIGH edge-triggered; advances shift register only when CE = LOW - defines precise timing for serial data movement. |
| 7 (Q7) | Serial output (MSB) | True output of final stage; provides shifted-out bit after eight clocks - used for daisy-chaining or MCU SPI input. |
| 9 (Q7) | Complementary serial output | Inverted version of Q7; enables differential signaling or wired-OR logic without external inverters. |
| 10 (DS) | Serial data input | Accepts new bit during shift mode; sampled on CP rising edge when PL = HIGH and CE = LOW - forms serial input path. |
| 11–14, 3–6 (D0–D7) | Parallel data inputs | Eight independent inputs loaded simultaneously on PL LOW - used for reading 8-bit status registers or switch banks. |
| 15 (CE) | Clock enable | Active-LOW gate for CP; disables shifting when HIGH - allows clock gating for power saving or conditional data flow. |
| 16 (VCC), 8 (GND) | Power supply terminals | Single 5 V supply with dedicated ground; decoupling required within 10 mm of pins for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH/VIL thresholds match legacy 5 V TTL logic, eliminating need for level translators in mixed-logic systems. |
| Overvoltage-tolerant inputs | Withstands up to 15 V on any input pin - enables safe interfacing with higher-voltage sensors or open-collector buses. |
| Dual complementary outputs | Q7 and Q7 provide true/inverted serial streams simultaneously - supports differential receivers or eliminates external inverters. |
| Asynchronous parallel load | PL asserts instantly, capturing parallel data independent of clock timing - essential for time-critical sampling (e.g., encoder position). |
| Industrial temperature range | Specified from -40 °C to +125 °C - validated for use in motor drives, power converters, and outdoor infrastructure equipment. |
Applications
| Microcontroller GPIO Expansion | Industrial I/O Monitoring |
|---|---|
|
Use Scenario: Adding 8 digital inputs to an MCU with limited GPIO, such as reading pushbutton arrays or dip-switch configurations. IC Role / Device Role: Parallel-to-serial converter that compresses 8-bit parallel status into a single serial stream compatible with SPI or bit-banged UART. Use Value: Reduces required MCU pins from 8 to 3 (CP, DS, PL), simplifies PCB routing, and avoids dedicated I/O expander ICs. |
Use Scenario: Monitoring status of 8 relay contacts or sensor flags in a programmable logic controller (PLC) backplane. IC Role / Device Role: Input aggregator that captures synchronized snapshots of distributed I/O states via PL, then shifts data out for central processing. Use Value: Enables deterministic, cycle-aligned sampling of all 8 inputs - critical for safety-critical state machine synchronization. |
| Legacy Bus Interface Bridging | LED Matrix Column Driver Control |
|
Use Scenario: Interfacing a modern microcontroller to an older 8-bit parallel data bus (e.g., ISA-style control lines or printer port signals). IC Role / Device Role: Protocol translator that latches parallel bus data on PL and serializes it for MCU consumption via CP/DS. Use Value: Eliminates need for FPGA or complex software polling; provides hardware-level timing alignment with legacy bus strobes. |
Use Scenario: Driving column select lines in a multiplexed LED display where columns are activated sequentially using serial data. IC Role / Device Role: Serial-to-parallel decoder that converts MCU-generated serial column address into active-high column enable signals (D0–D7). Use Value: Allows dynamic column reordering and brightness control via software-configurable shift patterns, reducing firmware complexity. |
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 |
|---|---|---|---|
| SN74HCT165DR | TSSOP-16 package, identical logic function and pinout; same 4.5–5.5 V supply and -40 °C to +125 °C rating. | No functional difference; TI part exhibits marginally tighter tpd variance (17–43 ns vs. Nexperia's 17–51 ns) but same typical value. | Select for multi-source procurement or existing TI-design ecosystems; requires no layout or firmware changes. |
| 74HC165PW,118 | CMOS-input variant (VIH = 3.15 V min at 4.5 V); otherwise identical pinout, timing, and packaging. | Requires ≥3.15 V HIGH signal - unsuitable for direct TTL driving; better for low-power 3.3 V–5 V mixed-signal systems with CMOS drivers. | Choose when interfacing with 3.3 V microcontrollers or when lower ICC (8 μA typ) is prioritized over TTL compatibility. |
Compared with SN74HCT165DR, the 74HCT165PW,118 offers identical functionality with verified Nexperia reliability and extended availability assurance; versus 74HC165PW,118, it provides guaranteed TTL-level input recognition - essential for legacy 5 V system integration without level shifters.
Availability
74HCT165PW,118 is available at Aetrix Electronics and suitable for industrial I/O monitoring, microcontroller GPIO expansion, and legacy bus interface bridging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT165PW,118 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, with global manufacturing and quality certifications including IATF 16949.
The 74HCT165 belongs to Nexperia's industry-standard 74HCT logic family, designed specifically for robust 5 V TTL-compatible interfacing in automotive, industrial, and consumer applications demanding wide temperature operation and noise immunity.
FAQ
Can 74HCT165PW,118 operate at 3.3 V?
No - the 74HCT165PW,118 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, VIH threshold (2.0 V min) may not be reliably met by standard 3.3 V logic outputs, risking incorrect input recognition. Use 74HC165PW,118 for 3.3 V–5 V flexible supply operation.
What is the purpose of the Q7 and Q7 outputs?
Q7 provides the true serial output of the most significant bit; Q7 delivers its logical inverse. This dual-output architecture supports differential signaling, wired-OR logic, or direct connection to complementary-input receivers - eliminating external inverters in many designs.
How does the PL (parallel load) input interact with CE and CP?
PL operates asynchronously and overrides CE and CP: when PL is LOW, D0–D7 load immediately into the register regardless of CE or CP state. Only when PL is HIGH does the device enter serial shift mode, where CE must be LOW and CP edges advance data - ensuring deterministic mode separation.
Is the TSSOP16 package (SOT403-1) thermally adequate for continuous operation?
Yes - the SOT403-1 package has a thermal resistance θJA of ~118 K/W and supports 500 mW total power dissipation up to +91 °C ambient. At typical ICC < 160 μA and IO < ±4 mA, power dissipation remains well below derating limits even in enclosed industrial enclosures.
74HCT165PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Shift Register
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Parallel or Serial to Serial
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HCT165PW,118 FAQ
1.How can I place an order for 74HCT165PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT165PW,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 74HCT165PW,118 reliable?
The price and inventory of 74HCT165PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT165PW,118 is usually 5 days.
3.What payment methods are accepted for 74HCT165PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT165PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT165PW,118?
74HCT165PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT165PW,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 74HCT165PW,118?
For technical support, including 74HCT165PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT165PW,118 requirements.
6.How does Aetrix verify that 74HCT165PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT165PW,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 74HCT165PW,118 meets industry standards.
7.What is the process for return or replacement of 74HCT165PW,118?
All 74HCT165PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT165PW,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 74HCT165PW,118 part is unused and in its original packaging.
Return procedure for 74HCT165PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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