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Nexperia USA Inc. 74HCT175PW,112
- Part No.:
- 74HCT175PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT175PW,112.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,870
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Product details
Overview
74HCT175PW,112 from Nexperia is a quad positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), TTL-compatible input levels, 16-pin TSSOP package, and operation across -40 °C to +125 °C. It provides four independent data storage cells with complementary Q/Q̅ outputs per stage, used in synchronous logic control, register file buffering, and clock-domain synchronization in industrial PLC I/O modules.
For engineers reviewing the 74HCT175PW,112 datasheet, 74HCT175PW,112 pinout, 74HCT175PW,112 application, or 74HCT175PW,112 equivalent, key selection criteria include TTL-level input compatibility, guaranteed 25 MHz maximum clock frequency at 4.5 V, 19 ns typical propagation delay (CP to Q), 5 ns minimum master reset pulse width, and 3.5 pF input capacitance for high-speed bus interfacing.
Technical Context
This device implements four edge-triggered D latches sharing a common clock (CP) and active-low asynchronous master reset (MR). Each flip-flop samples its Dn input on the LOW-to-HIGH transition of CP and updates Qn/Q̅n outputs synchronously, while MR forces all Qn outputs LOW regardless of clock state.
Input clamping diodes enable safe interfacing to voltages exceeding VCC when current-limiting resistors are used. The design complies with JEDEC standard no. 7A and supports dual temperature grades: -40 °C to +125 °C for industrial and extended-temperature applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) |
| Max Clock Frequency | 25 MHz at VCC = 4.5 V - supports reliable sampling of digital control signals in real-time I/O subsystems |
| Propagation Delay (CP→Q) | 19 ns typ (VCC = 4.5 V, CL = 50 pF) - enables tight timing margins in multi-stage synchronous pipelines |
| Set-up / Hold Time | 16 ns / 5 ns (VCC = 4.5 V) - defines minimum data stability window before and after clock edge |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard 5 V logic rails with ±10% tolerance for robust industrial operation |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for handling in non-ESD-controlled environments |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood, motor drive, and factory automation ambient conditions |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1); 16 leads; body width 4.4 mm; 0.65 mm lead pitch; exposed pad not present; RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | MR | Asynchronous master reset input (active LOW); overrides clock and forces all Qn outputs LOW immediately |
| 2 | Q0 | True output of Flip-Flop 1; driven HIGH/LOW based on sampled D0 value at preceding CP edge |
| 3 | Q̅0 | Complementary output of Flip-Flop 1; inverted logic of Q0, enabling direct NOR/XOR logic synthesis |
| 4 | D0 | Data input for Flip-Flop 1; sampled on LOW-to-HIGH CP transition if set-up/hold times met |
| 5 | D1 | Data input for Flip-Flop 2; electrically isolated but shares same CP and MR timing controls |
| 6 | Q̅1 | Complementary output of Flip-Flop 2; supports differential signaling or active-low enable paths |
| 7 | Q1 | True output of Flip-Flop 2; synchronized to CP, immune to data glitches outside valid windows |
| 8 | GND | Ground reference (0 V); return path for all internal logic and output currents; must be low-impedance |
| 9 | CP | Common clock input; LOW-to-HIGH edge triggers simultaneous sampling of all Dn inputs |
| 10 | Q2 | True output of Flip-Flop 3; identical timing behavior to Q0/Q1, enabling 4-bit parallel latch functionality |
| 11 | Q̅2 | Complementary output of Flip-Flop 3; allows reconstruction of original D2 without external inverters |
| 12 | D2 | Data input for Flip-Flop 3; routed separately to avoid crosstalk with D0/D1 in PCB layout |
| 13 | D3 | Data input for Flip-Flop 4; final data lane in quad configuration; supports byte-wide data capture |
| 14 | Q̅3 | Complementary output of Flip-Flop 4; completes full 4-bit true/complement output set for bus drivers |
| 15 | Q3 | True output of Flip-Flop 4; last stage in sequence; used for status flag chaining or shift-register loading |
| 16 | VCC | Positive supply voltage (4.5–5.5 V); powers internal CMOS circuitry and drives output stages to rail |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V - ensures interoperability with legacy 5 V TTL logic families without level shifters |
| Asynchronous master reset | MR asserts within 22 ns (VCC = 4.5 V) and holds all Qn outputs LOW independently of CP timing - critical for system initialization and fault recovery |
| Complementary outputs per stage | Qn and Q̅n available simultaneously - eliminates need for external inverters in toggle, enable, or differential bus applications |
| Input clamp diodes | Integrated ESD protection diodes to VCC and GND - permits safe interface to overvoltage sources (e.g., 12 V sensor lines) using series current-limiting resistors |
| Low dynamic power | CPD = 34 pF - limits switching power dissipation to < 1 mW at 10 MHz, supporting dense logic integration in thermally constrained enclosures |
Applications
| Industrial PLC Input Register | Serial-to-Parallel Data Latch |
|---|---|
|
Use Scenario: Capturing 4-bit status signals from isolated field sensors (e.g., limit switches, proximity detectors) in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Quad D flip-flop acts as a synchronous input register, sampling all four sensor states on a common system clock edge to eliminate metastability and ensure atomic read access. Use Value: Guaranteed 5 ns minimum MR pulse width enables deterministic reset during CPU boot or watchdog timeout, preventing stale sensor data from propagating into control algorithms. |
Use Scenario: Converting serial bitstream from microcontroller SPI peripheral into parallel 4-bit word for LED segment driver or GPIO expander. IC Role / Device Role / Timing Role: Edge-triggered storage element that latches incoming bits on successive clock edges, with MR used to clear partial words before new frame starts. Use Value: 19 ns CP→Q propagation delay ensures setup time compliance for downstream 74-series drivers operating at ≤25 MHz, eliminating inter-stage timing violations. |
| Motor Control State Buffer | Test Pattern Generator Register |
|
Use Scenario: Holding safety-critical motor enable/disable, direction, and brake states in servo drive firmware, where outputs drive opto-isolated gate drivers. IC Role / Device Role / Timing Role: Synchronous state register providing glitch-free, clock-aligned outputs to prevent unintended PWM transitions during state changes. Use Value: Complementary Q/Q̅ outputs allow direct connection to dual-channel isolated drivers (e.g., HCPL-3120), reducing component count and PCB area versus discrete inverter solutions. |
Use Scenario: Generating fixed 4-bit test patterns (e.g., 0000, 0001, ..., 1111) for boundary-scan or functional testing of digital subsystems on production test fixtures. IC Role / Device Role / Timing Role: Static pattern store holding preloaded values; MR resets pattern counter logic, while CP advances to next test vector. Use Value: Input leakage current ≤±1 μA at VCC = 5.5 V ensures stable DC states during long-duration test cycles without unintended toggling due to leakage-induced noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC175PW,118 | CMOS-input thresholds (VIH = 3.15 V min at VCC = 4.5 V) vs. TTL-compatible 74HCT175; 20 ns typical CP→Q delay | Requires ≥3.15 V HIGH input - unsuitable for direct interface with 5 V TTL or 3.3 V MCU GPIO without level translation | Select when interfacing exclusively with 74HC/74AHC logic families and lower static current (<8 μA ICC) is prioritized over TTL compatibility |
| SN74LS175N | Bipolar TTL technology; 15 ns typical propagation delay; 4.75–5.25 V supply only; higher ICC (19 mA typical) | Higher power consumption and heat generation; incompatible with mixed-voltage systems due to strict 5 V rail requirement | Choose only for legacy board replacements where LS-family timing and drive strength are mandatory; not recommended for new designs |
Compared with 74HC175PW,118 and SN74LS175N, the 74HCT175PW,112 uniquely balances TTL-level input compatibility, 25 MHz operation, and 100 μA max ICC at 125 °C - making it optimal for modern industrial controllers interfacing heterogeneous logic families without added level-shifting circuitry.
Availability
74HCT175PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor control state buffering, serial-to-parallel data conversion, and test pattern generation requiring stable component supply across extended temperature ranges.
Supply support for 74HCT175PW,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, analog, and MOSFET solutions with focus on efficiency, reliability, and sustainability.
The 74HCT series targets industrial and automotive-adjacent applications requiring robust 5 V logic interfacing with legacy TTL systems, emphasizing noise immunity, wide temperature operation, and low-power CMOS architecture.
FAQ
What is the minimum pulse width required on the MR pin to ensure reliable reset?
The MR pin requires a minimum LOW pulse width of 5 ns at VCC = 4.5 V to guarantee all four flip-flops reset synchronously. This specification is verified across -40 °C to +125 °C and accounts for process variation; shorter pulses may result in incomplete or metastable reset behavior in worst-case corners.
Can 74HCT175PW,112 operate reliably at 3.3 V supply?
No - the 74HCT175PW,112 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, VIH and VIL thresholds fall outside TTL compatibility range, and propagation delays increase significantly beyond datasheet limits; use 74LVC175 or similar 3.3 V logic family instead.
How does the input clamping diode structure affect interfacing with 12 V sensor signals?
The integrated input clamp diodes to VCC and GND allow safe connection of 12 V signals when a series current-limiting resistor ≥560 Ω is used. This limits IIK to <20 mA, preventing damage while enabling direct interface to industrial 12 V dry-contact or open-collector sensors without external protection components.
Is the 74HCT175PW,112 pin-compatible with SO16-packaged variants like 74HCT175D?
Yes - both 74HCT175PW (TSSOP16/SOT403-1) and 74HCT175D (SO16/SOT109-1) share identical pin numbering, function mapping, and electrical specifications. Mechanical differences (body width, lead pitch, thermal resistance) require separate PCB footprints, but logic-level schematics and firmware remain fully interchangeable.
74HCT175PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 49 MHz
- Max Propagation Delay @ V, Max CL:
- 33ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HCT175PW,112 FAQ
1.How can I place an order for 74HCT175PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT175PW,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 74HCT175PW,112 reliable?
The price and inventory of 74HCT175PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT175PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT175PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT175PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT175PW,112?
74HCT175PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT175PW,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 74HCT175PW,112?
For technical support, including 74HCT175PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT175PW,112 requirements.
6.How does Aetrix verify that 74HCT175PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT175PW,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 74HCT175PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT175PW,112?
All 74HCT175PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT175PW,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 74HCT175PW,112 part is unused and in its original packaging.
Return procedure for 74HCT175PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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