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NXP Semiconductors 74HC165PW,112
- Part No.:
- 74HC165PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Shift Registers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC165PW,112.pdf
- Description:
- NEXPERIA 74HC165PW - PARALLEL IN
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
74HC165PW,112 from Nexperia is an 8-bit parallel-in/serial-out CMOS shift register in TSSOP16 package, supporting asynchronous parallel load (PL), synchronous serial shift (CP/CE), and dual complementary outputs (Q7/Q7). It operates from 2.0 V to 6.0 V, features overvoltage-tolerant inputs up to 15 V, and is rated for -40 °C to +125 °C - used in microcontroller GPIO expansion and industrial I/O consolidation.
For engineers reviewing the 74HC165PW,112 datasheet, 74HC165PW,112 pinout, 74HC165PW,112 application, or 74HC165PW,112 equivalent, this device serves as a low-power, level-shifting-capable shift register for embedded data acquisition, keypad scanning, and sensor interface subsystems where parallel-to-serial conversion with deterministic timing is required.
Technical Context
The 74HC165PW,112 implements an 8-stage static shift register with dual-edge-controlled functionality: PL enables asynchronous parallel capture of D0–D7, while CE-gated CP triggers synchronous serial shifting on LOW-to-HIGH transitions. Its CMOS input structure supports TTL-level compatibility only in the 74HCT variant; this part is the 74HC version with CMOS-level thresholds.
Input clamping allows safe HIGH-to-LOW level shifting (e.g., 5 V logic driving 3.3 V MCU), and propagation delays are specified down to 14 ns at VCC = 6.0 V (Q7 output), with maximum clock frequency reaching 35 MHz at 6 V and 24 MHz at 4.5 V under CL = 50 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC - high-speed CMOS with rail-to-rail output swing and 2.0–6.0 V supply range |
| Function | 8-bit parallel-in/serial-out shift register with asynchronous load and complementary Q7/Q7 outputs |
| Supply Voltage | 2.0 V to 6.0 V - enables direct interfacing with 3.3 V and 5 V systems without level translators |
| Propagation Delay | 14 ns (max) from CP to Q7 at VCC = 6.0 V - supports >35 MHz clock rates in high-speed data capture |
| Input Tolerance | Overvoltage tolerant to 15 V - permits robust 5 V → 3.3 V level shifting without external protection |
| Operating Temperature | -40 °C to +125 °C - qualified for automotive under-hood and industrial control environments |
| Package | TSSOP16 (SOT403-1), 4.4 mm body width - surface-mount compatible with fine-pitch PCB assembly |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16 leads, 0.65 mm pitch, body width 4.4 mm, thermal performance rated for 500 mW total power dissipation with 8.5 mW/K derating above +91 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PL) | Asynchronous parallel load input | Active-LOW signal that latches D0–D7 into register immediately, independent of clock |
| 2 (CP) | Clock input | LOW-to-HIGH edge-triggered; advances shift register when CE = LOW |
| 7 (Q7) | Serial output (inverted) | Complementary output of final stage; synchronized to CP edge with 14–50 ns delay depending on VCC |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and output drivers; must be low-impedance for noise immunity |
| 9 (Q7) | Serial output (non-inverted) | True output of final stage; provides both polarities for flexible downstream logic interfacing |
| 10 (DS) | Serial data input | Enters LSB position during serial shift; sampled on CP rising edge when PL = HIGH and CE = LOW |
| 11–14, 3–6 (D0–D7) | Parallel data inputs | 8-bit wide bus loaded simultaneously on PL assertion; mapped D0 (pin 11) to D7 (pin 6) per functional diagram |
| 15 (CE) | Clock enable input | Active-LOW gate for CP; HIGH disables shifting entirely, holding register state |
| 16 (VCC) | Positive supply voltage | Primary power rail; supports 2.0–6.0 V operation with ICC ≤ 160 μA at 6 V and full temperature range |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2.0 V to 6.0 V operation enables drop-in use across 3.3 V and 5 V systems without voltage translation |
| Asynchronous parallel load | PL input loads D0–D7 independently of clock timing - critical for synchronizing external event capture |
| Overvoltage-tolerant inputs | Withstands up to 15 V on any input pin - eliminates need for external clamping diodes in mixed-voltage designs |
| Complementary serial outputs | Simultaneous Q7 and Q7 outputs reduce external inverters in feedback or differential signaling paths |
| High noise immunity | CMOS threshold ratios (VIH ≥ 70% VCC, VIL ≤ 30% VCC) ensure robust operation in electrically noisy industrial environments |
Applications
| Industrial Keypad Interface | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Scanning 8×8 membrane keypad matrix using minimal MCU pins. IC Role / Device Role: Parallel capture of row/column states followed by serial streaming to MCU SPI or bit-banged UART. Use Value: Reduces required MCU I/O from 16 to 3 (PL, CP, DS) while maintaining deterministic scan timing via asynchronous load. |
Use Scenario: Adding 8 digital input channels to an STM32 with limited GPIO availability. IC Role / Device Role: Shift register acting as parallel-to-serial bridge between external sensors and MCU's USART RX line. Use Value: Enables real-time monitoring of 8 discrete signals with <15 ns propagation uncertainty at 6 V supply. |
| Automotive Sensor Data Aggregation | Legacy Bus Signal Conditioning |
|
Use Scenario: Consolidating status bits from multiple CAN node diagnostics into single serial stream. IC Role / Device Role: Level-shifting interface between 5 V sensor outputs and 3.3 V microcontroller, leveraging 15 V input tolerance. Use Value: Eliminates external level shifters while meeting AEC-Q100 Grade 1 temperature requirements (-40 °C to +125 °C). |
Use Scenario: Adapting parallel status flags from legacy 8-bit microprocessor bus to modern FPGA control logic. IC Role / Device Role: Synchronizing asynchronous flag updates (via PL) and delivering time-aligned serial data (Q7) to FPGA shift-in register. Use Value: Provides setup/hold time margins (≥5 ns) and pulse width guarantees (≥20 ns at 4.5 V) for reliable FPGA sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit parallel-in/serial-out shift register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT165PW,112 | TTL-compatible inputs (VIH = 2.0 V min at VCC = 4.5–5.5 V); identical pinout and function | Better suited for mixed 5 V TTL/CMOS systems where input drive strength or noise margin differs | Select when interfacing with legacy 5 V TTL outputs or when VIH/VIL thresholds must match TTL standards |
| SN74LV165APWR | Lower VCC range (1.65–5.5 V); higher fmax (60 MHz at 5 V); different pin mapping (PL = pin 9, Q7 = pin 1) | Requires PCB layout revision; superior speed but lacks 15 V input tolerance | Choose for new designs targeting 1.8 V/3.3 V domains with need for >48 MHz operation and no level-shifting requirement |
Compared with 74HC165PW,112, the 74HCT165PW,112 offers guaranteed TTL input compatibility at 5 V but sacrifices 2.0 V minimum supply capability; SN74LV165APWR delivers higher speed and lower voltage support but removes overvoltage tolerance and changes pin assignment - making it unsuitable for drop-in replacement.
Availability
74HC165PW,112 is available at Aetrix Electronics and suitable for industrial keypad interfaces, microcontroller GPIO expansion, automotive sensor aggregation, and legacy bus signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74HC165PW,112 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 specializing in high-performance, energy-efficient logic, analog, and MOSFET solutions - founded as part of NXP and now an independent leader in standard logic and power devices.
The 74HC165 belongs to Nexperia's 74HC logic family, designed for low-power, high-noise-immunity digital interfacing in industrial, automotive, and consumer applications where reliability and wide supply flexibility are essential.
FAQ
What is the maximum clock frequency supported by the 74HC165PW,112?
The 74HC165PW,112 supports up to 35 MHz at VCC = 6.0 V and CL = 50 pF, and 24 MHz at VCC = 4.5 V under the same load. At 5.0 V with reduced 15 pF load, maximum frequency reaches 56 MHz per dynamic characteristics table. These values assume proper decoupling and signal integrity.
Can the 74HC165PW,112 safely interface 5 V signals with a 3.3 V microcontroller?
Yes - its inputs are overvoltage tolerant up to 15 V, allowing direct connection of 5 V logic signals without external level shifters or clamping diodes. Outputs swing rail-to-rail (0 V to VCC), so with VCC = 3.3 V, Q7/Q7 outputs are fully compatible with 3.3 V MCU inputs.
How does the asynchronous parallel load (PL) interact with ongoing serial shifting?
Asserting PL LOW immediately captures the current states of D0–D7 into the register, overriding any ongoing serial shift operation. This action is independent of CP and CE states, providing deterministic parallel data capture aligned to external events - critical for time-sensitive input sampling.
Is the TSSOP16 package (SOT403-1) RoHS compliant and lead-free?
Yes - the 74HC165PW,112 uses a lead-free, RoHS-compliant TSSOP16 package (SOT403-1) with matte tin termination. Nexperia confirms full compliance with EU RoHS Directive 2011/65/EU and JEDEC J-STD-609 Category 1 marking for lead-free finish.
74HC165PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HC165PW,112 FAQ
1.How can I place an order for 74HC165PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC165PW,112 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 74HC165PW,112 reliable?
The price and inventory of 74HC165PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC165PW,112 is usually 5 days.
3.What payment methods are accepted for 74HC165PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC165PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC165PW,112?
74HC165PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC165PW,112 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 74HC165PW,112?
For technical support, including 74HC165PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC165PW,112 requirements.
6.How does Aetrix verify that 74HC165PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HC165PW,112 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 74HC165PW,112 meets industry standards.
7.What is the process for return or replacement of 74HC165PW,112?
All 74HC165PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC165PW,112, 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 74HC165PW,112 part is unused and in its original packaging.
Return procedure for 74HC165PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC165PW,112 Tags
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Texas Instruments
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SN74HC595DR
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74HC595PW,118
Nexperia USA Inc.
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SN74HC165PWR
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HEF4094BT,653
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SN74HC595PWR
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74HC165D,653
Nexperia USA Inc.
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SN74LV165APWR
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74HC595BQ,115
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74HC165BQ,115
Nexperia USA Inc.
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CD4094BPWR
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