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Texas Instruments SN74HC175NE4
- Part No.:
- SN74HC175NE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74HC175NE4.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,350
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Product details
Overview
SN74HC175NE4 from Texas Instruments is a quadruple positive-edge-triggered D-type flip-flop with individual direct-clear (CLR) inputs and complementary Q/Q̅ outputs per stage, operating across 2 V to 6 V supply voltage. It delivers 13 ns typical propagation delay at 6 V, ±4 mA output drive, and low 80 μA max ICC, enabling reliable data latching in synchronous digital logic systems such as register files and pattern generators.
For engineers reviewing the SN74HC175NE4 datasheet, SN74HC175NE4 pinout, SN74HC175NE4 application, or SN74HC175NE4 equivalent, key selection criteria include its PDIP-16 package, 16-pin dual-rail output configuration, wide VCC range compatibility, and verified timing performance under industrial temperature conditions (–40°C to +85°C).
Technical Context
This device implements four independent edge-triggered storage elements sharing a common clock (CLK) and separate asynchronous clear (CLR) inputs. Each flip-flop transfers data from D to Q on the rising edge of CLK while maintaining complementary Q and Q̅ outputs - critical for bus-hold, state retention, and differential signaling paths.
It operates in standard CMOS logic family characteristics: input thresholds scale with VCC (VIH = 0.7×VCC, VIL = 0.3×VCC), supports up to 10 LSTTL loads, and features low input current (≤1 μA) and high noise immunity due to hysteresis-free but rail-referenced switching behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (HC), compatible with TTL input levels and 5 V systems |
| Supply Voltage Range | 2 V to 6 V - enables interoperability across 3.3 V and 5 V domains without level shifters |
| Propagation Delay (tpd) | 13 ns typical at VCC = 6 V - ensures sub-25 ns cycle time for ≤25 MHz clock operation |
| Output Drive Strength | ±4 mA at 5 V - sufficient to directly drive multiple LSTTL inputs or small capacitive loads |
| Quiescent Current (ICC) | 80 μA max - supports low-power standby modes in battery-backed or energy-sensitive designs |
| Input Leakage Current | 1 μA max - prevents unintended logic transitions when inputs are tied to rails or pulled |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and instrumentation applications |
Pinout & Package
SN74HC175NE4 uses a 16-pin plastic dual in-line package (PDIP-N), with 19.31 mm × 6.35 mm body size and through-hole mounting. Pin numbering follows standard DIP orientation with Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | D₀–D₃ Data Inputs | Asynchronous data inputs for each of four flip-flops; sampled on CLK rising edge |
| 5, 6, 7, 8 | Q₀–Q₃ True Outputs | Registered outputs reflecting stored D-state after CLK edge; drive external logic or buses |
| 9 | GND | Ground reference for all internal circuitry and I/O; must be low-impedance connection |
| 10, 11, 12, 13 | Q̅₀–Q̅₃ Complementary Outputs | Inverted mirror of Q outputs; eliminates need for external inverters in differential routing |
| 14 | VCC | Positive supply rail (2–6 V); requires local 0.1 μF ceramic bypass capacitor near pin |
| 15 | CLK | Global clock input; positive-edge sensitive; synchronizes all four flip-flops simultaneously |
| 16 | CLR | Active-low asynchronous clear; forces all Q outputs low regardless of CLK or D state |
Key Features
| Feature | Design Value |
|---|---|
| Complementary Q/Q̅ outputs per stage | Eliminates external inverters in toggle, enable, or differential bus applications |
| Wide 2–6 V supply range | Supports mixed-voltage system integration without dedicated level translation |
| Low 80 μA max ICC | Reduces system-level quiescent power in always-on control registers and sequencers |
| 13 ns tpd at 6 V | Enables reliable operation in 25 MHz synchronous logic with margin for trace delays |
| Direct asynchronous CLR per device | Allows deterministic reset of all four registers with single control signal |
Applications
| Buffer/Storage Registers | Shift Registers |
|---|---|
|
Use Scenario: Holding parallel data from ADCs, sensors, or microcontroller GPIO before serial transmission or processing. IC Role / Device Role / Timing Role: Four-bit parallel latch with synchronized sampling and simultaneous output enable via shared CLK and CLR. Use Value: Eliminates need for discrete inverters or additional logic gates due to built-in Q/Q̅ pairs, reducing BOM count and board area. |
Use Scenario: Constructing 4-bit serial-in/parallel-out (SIPO) or parallel-in/serial-out (PISO) shift paths in communication interfaces. IC Role / Device Role / Timing Role: Edge-triggered storage element with cascaded D-to-Q connections between stages. Use Value: Predictable 13 ns propagation delay ensures tight timing alignment across all four bits under 25 MHz clocks. |
| Pattern Generators | Digital Control Sequencers |
|
Use Scenario: Generating fixed test patterns (e.g., walking 1s, Gray code) for FPGA validation or PCB functional testing. IC Role / Device Role / Timing Role: Deterministic state machine node with reset-on-demand capability via CLR. Use Value: Asynchronous CLR allows immediate pattern restart without waiting for clock edges - critical for test repeatability. |
Use Scenario: Managing multi-step actuator sequencing in industrial PLC modules or motor driver logic. IC Role / Device Role / Timing Role: Synchronized state register holding step index or mode flags updated on system clock edges. Use Value: Low 1 μA input leakage prevents spurious state changes during long idle periods between operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC174N | Hex D-type flip-flop with common CLK and CLR, but no complementary outputs (Q only) | Requires external inverters for Q̅ functionality; better suited for single-ended register banks | Select when six-bit storage is needed and inverted outputs are generated elsewhere |
| CD74HC175E | Same logic function and pinout, but manufactured by TI under legacy CD prefix; identical electrical specs and PDIP-16 packaging | No functional difference; differs only in part numbering convention and historical qualification path | Drop-in replacement with identical footprint, timing, and drive capability - suitable for legacy design continuity |
Compared with SN74HC175NE4, SN74HC174N provides higher channel count but lacks Q̅ outputs, increasing component count for differential use cases; CD74HC175E offers identical performance and mechanical compatibility, making it a seamless alternative for sourcing flexibility.
Availability
SN74HC175NE4 is available at Aetrix Electronics and suitable for industrial control panels, test equipment buffer registers, and digital instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74HC175NE4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of experience in high-reliability industrial and automotive-grade components.
SN74HC175NE4 belongs to the SN74HC logic family designed for robust, low-power, pin-compatible replacements of legacy TTL devices in industrial automation, instrumentation, and communications infrastructure.
FAQ
What is the maximum clock frequency supported by SN74HC175NE4?
The SN74HC175NE4 supports up to 25 MHz maximum clock frequency at VCC = 6 V and TA = 25°C, based on its 38 ns maximum propagation delay (tpd) and timing requirements. At industrial temperature extremes (–40°C to +85°C), derating applies - consult Table 6.5 in the datasheet for guaranteed fmax values across voltage and temperature conditions. The SN74HC175NE4 maintains functional integrity within these limits without external timing compensation.
Does SN74HC175NE4 require external pull-up or pull-down resistors on unused inputs?
Yes - all unused inputs of SN74HC175NE4 must be tied to VCC or GND to prevent floating states that cause increased ICC, oscillation, or undefined outputs. This requirement is explicitly stated in Section 6.2 of the datasheet. Leaving inputs unconnected risks erratic behavior, especially in noisy environments or during power-up sequences. The SN74HC175NE4 does not include internal weak pull-ups or pull-downs.
Can SN74HC175NE4 operate reliably at 3.3 V supply voltage?
Yes - SN74HC175NE4 is fully specified for operation from 2 V to 6 V, including 3.3 V nominal systems. At 3.3 V, it delivers ≥3.0 V VOH and ≤0.3 V VOL under load, meets setup/hold timing margins, and maintains <100 μA ICC. Its HC logic family ensures compatibility with both 3.3 V and 5 V interface standards without level-shifting circuitry.
What is the thermal resistance (RθJA) of SN74HC175NE4 in its PDIP package?
The junction-to-ambient thermal resistance (RθJA) for SN74HC175NE4 in the PDIP (N) package is 60.5°C/W, as confirmed in Section 6.3 of the datasheet. This value assumes standard JEDEC 2S2P board layout conditions. For sustained operation near maximum ambient temperatures, ensure adequate airflow or board copper area to avoid exceeding the 150°C absolute maximum junction temperature.
Is SN74HC175NE4 RoHS compliant?
Yes - SN74HC175NE4 is RoHS compliant, with lead finish specified as NiPdAu (nickel-palladium-gold) and full compliance documented in TI's Package Option Addendum. The "E4" suffix denotes TI's standard green (lead-free) PDIP packaging, meeting EU Directive 2011/65/EU and related environmental regulations without exemptions.
SN74HC175NE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 60 MHz
- Max Propagation Delay @ V, Max CL:
- 26ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
SN74HC175NE4 FAQ
1.How can I place an order for SN74HC175NE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC175NE4 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 SN74HC175NE4 reliable?
The price and inventory of SN74HC175NE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC175NE4 is usually 5 days.
3.What payment methods are accepted for SN74HC175NE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC175NE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC175NE4?
SN74HC175NE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC175NE4 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 SN74HC175NE4?
For technical support, including SN74HC175NE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC175NE4 requirements.
6.How does Aetrix verify that SN74HC175NE4 is sourced from the original manufacturer or authorized distributors?
All SN74HC175NE4 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 SN74HC175NE4 meets industry standards.
7.What is the process for return or replacement of SN74HC175NE4?
All SN74HC175NE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC175NE4, 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 SN74HC175NE4 part is unused and in its original packaging.
Return procedure for SN74HC175NE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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