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NXP Semiconductors 74HC164PW,112
- Part No.:
- 74HC164PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Shift Registers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC164PW,112.pdf
- Description:
- IC 8BIT SHIFT REGISTER 14-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:20,370
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Product details
Overview
74HC164PW,112 from Nexperia is an 8-bit serial-in/parallel-out CMOS shift register in TSSOP14 package, featuring dual gated serial inputs (DSA/DSB), asynchronous master reset (MR), and edge-triggered clock (CP) operating from 2.0 V to 6.0 V. It delivers 8 parallel outputs (Q0–Q7), supports -40 °C to +125 °C operation, and is used in LED matrix drivers, GPIO expansion, and serial-to-parallel data conversion in industrial control panels.
For engineers reviewing the 74HC164PW,112 datasheet, 74HC164PW,112 pinout, 74HC164PW,112 application, or 74HC164PW,112 equivalent, this device is selected for low-power, TTL-compatible (74HCT variant) or CMOS-level serial data latching where precise timing, noise immunity, and wide supply range are required in space-constrained PCB layouts.
Technical Context
The 74HC164PW,112 implements an 8-stage D-type flip-flop chain with synchronous serial loading and asynchronous reset. Data shifts on LOW-to-HIGH CP transitions, with DSA and DSB acting as mutually enabling serial inputs-either can gate the other via active-HIGH logic.
Its internal architecture includes input clamp diodes for overvoltage tolerance, rail-to-rail output swing (VOH ≥ 4.4 V @ VCC = 4.5 V, IO = −4.0 mA), and guaranteed operation across industrial and extended temperature ranges (−40 °C to +125 °C) without derating below 81 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.0 V to 6.0 V - enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Propagation delay (CP to Qn) | 15 ns (typ) @ VCC = 4.5 V - supports reliable 30 MHz clock operation in high-speed serial data pipelines. |
| Output drive strength | ±4.0 mA @ VCC = 4.5 V - sufficient to directly drive LEDs or standard CMOS/TTL inputs without external buffers. |
| Input threshold (74HC) | VIH = 3.15 V, VIL = 1.35 V @ VCC = 4.5 V - ensures robust noise margin (>1.3 V) in noisy industrial environments. |
| Power dissipation capacitance | 40 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal-aware system design. |
| Operating temperature | −40 °C to +125 °C - qualified for under-hood automotive modules, motor drives, and industrial PLC I/O stages. |
| ESD protection | HBM >2000 V, CDM >1000 V - reduces risk of field failure during handling and board assembly. |
Pinout & Package
TSSOP14 (SOT402-1) package: plastic thin shrink small outline, 14-lead, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DSA) | Serial data input A | Primary serial input; gated by DSB - when DSB = HIGH, DSA data shifts in on CP rising edge. |
| 2 (DSB) | Serial data input B | Secondary serial input; acts as enable for DSA - allows flexible serial data routing or synchronization control. |
| 3 (Q0) | Parallel output 0 | LSB of 8-bit parallel word; updates one clock cycle after corresponding serial bit enters DSA/DSB. |
| 4 (Q1) | Parallel output 1 | Second bit; shifted from Q0 on next CP edge - forms contiguous 8-bit latch with deterministic timing skew. |
| 5 (Q2) | Parallel output 2 | Third bit; maintains fixed 1-clock delay relationship across all Q0–Q7 outputs for predictable waveform generation. |
| 6 (Q3) | Parallel output 3 | Fourth bit; used in cascaded configurations to feed Q3 to DSA of next stage for wider bus expansion. |
| 7 (GND) | Ground reference | 0 V return path for all internal logic and output drivers; must be low-impedance for stable noise immunity. |
| 8 (CP) | Clock input | Rising-edge triggered; LOW-to-HIGH transition advances all flip-flops simultaneously - no internal clock divider. |
| 9 (MR) | Master reset | Asynchronous active-LOW signal; forces Q0–Q7 LOW independent of CP or data inputs - critical for safe startup. |
| 10 (Q4) | Parallel output 4 | Fifth bit; provides mid-word access point for partial readback or segmented display control. |
| 11 (Q5) | Parallel output 5 | Sixth bit; matches timing profile of Q0–Q3 - enables uniform strobing across full 8-bit output bank. |
| 12 (Q6) | Parallel output 6 | Seventh bit; used with Q7 to drive high-side LED segments requiring coordinated current sinking. |
| 13 (Q7) | Parallel output 7 | MSB; final shifted bit - indicates completion of 8-bit load and enables end-of-frame detection in protocol engines. |
| 14 (VCC) | Positive supply | Primary power rail; supplies all internal logic and output drivers - requires local 100 nF decoupling near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Gated dual serial inputs | DSA and DSB provide hardware-selectable data path control - eliminates need for external AND gates in multiplexed serial streams. |
| Asynchronous master reset | MR clears all outputs to LOW within 14 ns (typ) @ VCC = 4.5 V - ensures deterministic state on power-up or fault recovery. |
| Wide supply range | 2.0 V to 6.0 V operation - supports mixed-voltage systems and battery-powered designs down to 2.0 V cutoff. |
| High noise immunity | Input hysteresis and >1.3 V noise margin at 4.5 V - suppresses false triggering from EMI in motor drive or relay control circuits. |
| Clamp diode protection | Integrated input diodes allow use of current-limiting resistors for interfacing to signals exceeding VCC - simplifies level translation. |
Applications
| LED Matrix Driver | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving 8×8 monochrome LED displays in industrial HMI panels using a single microcontroller UART or SPI line. IC Role / Device Role / Timing Role: Serial-to-parallel converter that transforms 8-bit serial frames into simultaneous 8-bit column or row enable signals synchronized to CP. Use Value: Reduces MCU pin count by 7 vs. direct parallel drive; enables compact layout with TSSOP14 footprint and 0.65 mm pitch. |
Use Scenario: Extending digital I/O capability of resource-constrained ARM Cortex-M0+ MCUs in smart sensor nodes. IC Role / Device Role / Timing Role: Synchronous shift register providing additional parallel output bits controlled via software-configurable CP and MR timing. Use Value: Delivers deterministic 8-bit output update within 51 ns (max) @ VCC = 4.5 V - meets real-time response requirements for actuator control. |
| Industrial Serial Bus Interface | Legacy Protocol Emulator |
|
Use Scenario: Converting RS-485-modulated serial commands into parallel control words for stepper motor driver ICs in CNC equipment. IC Role / Device Role / Timing Role: Edge-triggered latch synchronizing incoming serial data to local system clock domain via CP derived from line receiver output. Use Value: Supports 30 MHz max clock rate - accommodates high-speed Modbus RTU bursts while maintaining setup/hold compliance. |
Use Scenario: Emulating vintage parallel printer port handshaking (STROBE, ACK) using modern microcontrollers lacking native parallel peripherals. IC Role / Device Role / Timing Role: Parallel output generator with MR-initiated clean state reset - ensures known initial condition before command execution. Use Value: Asynchronous MR guarantees immediate Q0–Q7 = LOW on power-on - eliminates spurious pulses during boot sequence. |
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,112 | Same pinout and function, but TTL-compatible inputs (VIH = 2.0 V min) instead of CMOS thresholds. | Better suited for direct interface with legacy 5 V TTL logic; slightly higher ICC at VCC = 4.5 V (8 μA vs. 8.0 μA typ). | Select when driving from 74LS or older microcontrollers with marginal high-level output voltage. |
| SN74HC164PWR | TI variant in TSSOP14; identical electrical specs but different thermal derating (7.3 mW/K above 81 °C vs. Nexperia's 7.3 mW/K). | Same functional behavior; minor packaging variation - TI part uses JEDEC MO-153, Nexperia uses SOT402-1 (mechanically compatible). | Use for second-source assurance; verify board land pattern compatibility per IPC-7351B density level B. |
Compared with 74HCT164PW,112, the 74HC164PW,112 offers superior noise immunity in mixed-signal environments due to higher VIH/VIL ratios, while SN74HC164PWR provides identical functionality with alternate supply-chain availability - both require no firmware or layout changes for drop-in replacement.
Availability
74HC164PW,112 is available at Aetrix Electronics and suitable for LED display drivers, microcontroller I/O expansion, and industrial serial interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC164PW,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 delivering high-performance, reliable logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.
The 74HC164PW,112 belongs to Nexperia's 74HC logic family, designed for low-power, high-noise-immunity digital interfacing in industrial automation, consumer electronics, and automotive body control modules.
FAQ
What is the maximum clock frequency supported by the 74HC164PW,112?
The 74HC164PW,112 supports up to 85 MHz maximum clock frequency at VCC = 6.0 V and CL = 15 pF, with typical propagation delay of 12 ns (CP to Qn). At 4.5 V, fmax is 71 MHz (typ) and 51 MHz (max), verified per Table 7 in the official Nexperia datasheet Rev. 11.
Can DSA and DSB be used simultaneously for data input?
No - DSA and DSB are logically AND-gated; only one serves as active data input while the other acts as an enable. When DSB = HIGH, DSA data shifts in; when DSA = HIGH, DSB data shifts in. Simultaneous assertion causes undefined behavior per the function table in Section 6.
Is the TSSOP14 package (SOT402-1) lead-free and RoHS compliant?
Yes - the 74HC164PW,112 is manufactured in a lead-free, RoHS-compliant process per Nexperia's product compliance documentation, with homogeneous material declaration confirming <1000 ppm lead content and full adherence to EU Directive 2011/65/EU.
How does the master reset (MR) interact with the clock (CP) input?
MR is asynchronous and overrides all clock activity: a LOW on MR forces Q0–Q7 immediately LOW regardless of CP state or timing. The minimum MR pulse width is 10 ns (typ) at VCC = 6.0 V, and recovery time before next valid CP edge is 13 ns (max), as specified in Table 7.
74HC164PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HC164PW,112 FAQ
1.How can I place an order for 74HC164PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC164PW,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 74HC164PW,112 reliable?
The price and inventory of 74HC164PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC164PW,112 is usually 5 days.
3.What payment methods are accepted for 74HC164PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC164PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC164PW,112?
74HC164PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC164PW,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 74HC164PW,112?
For technical support, including 74HC164PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC164PW,112 requirements.
6.How does Aetrix verify that 74HC164PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HC164PW,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 74HC164PW,112 meets industry standards.
7.What is the process for return or replacement of 74HC164PW,112?
All 74HC164PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC164PW,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 74HC164PW,112 part is unused and in its original packaging.
Return procedure for 74HC164PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC164PW,112 Tags
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