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Texas Instruments SN74HC175ANS
- Part No.:
- SN74HC175ANS
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74HC175ANS.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,950
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Product details
Overview
SN74HC175ANS from Texas Instruments is a quad positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), complementary Q/Q̄ outputs, and individual D inputs. It operates across 2 V to 6 V supply, supports −40 °C to +85 °C ambient range, and delivers 35 ns typical propagation delay at 6 V - used in synchronous data latching, shift register stages, and digital state storage in industrial control logic.
For engineers reviewing the SN74HC175ANS datasheet, SN74HC175ANS pinout, SN74HC175ANS application, or SN74HC175ANS equivalent, key selection criteria include CMOS-level input compatibility, 16-pin SOIC-N package footprint, guaranteed setup/hold timing margins, and direct replacement suitability for legacy 74HC175-based designs requiring TTL-compatible variants.
Technical Context
The SN74HC175ANS implements four independent edge-triggered D latches synchronized to the rising edge of CP, with all outputs simultaneously cleared by an active-low MR signal. Its internal structure includes input clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used.
It complies with JEDEC standard no. 7A and meets HBM ESD protection >2000 V and MM ESD protection >200 V. The device is specified for operation from −40 °C to +85 °C and supports static and dynamic performance across 2.0 V–6.0 V VCC, with input thresholds scaling proportionally to supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC CMOS - ensures low static power consumption and rail-to-rail output swing compatible with mixed-voltage systems. |
| Supply Voltage Range | 2.0 V to 6.0 V - enables interoperability with 3.3 V and 5 V logic domains without level-shifting. |
| Propagation Delay (tpd) | 30 ns max at VCC = 6 V - guarantees reliable timing in high-speed synchronous circuits up to ~24 MHz clock rate. |
| Input Thresholds (VIH/VIL) | VIH = 4.2 V min, VIL = 1.8 V max at VCC = 6 V - provides robust noise margin (>1.2 V) under worst-case conditions. |
| Output Drive Capability | ±5.2 mA at VCC = 6 V - sufficient to drive multiple 74HC inputs or small capacitive loads without buffering. |
| ESD Protection | HBM >2000 V, MM >200 V - meets industrial handling requirements without additional external protection. |
Pinout & Package
SN74HC175ANS is supplied in a 16-pin plastic small-outline integrated circuit (SOIC-N) package with 0.300-inch body width (SOT109-1), standard pin pitch of 1.27 mm, and surface-mount footprint compatible with IPC-7351B SOIC16_N.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Asynchronous master reset | Active-low global clear: forces all Q outputs LOW regardless of clock state - critical for power-on initialization and fault recovery. |
| 2, 7, 10, 15 (Q0–Q3) | True outputs | Four buffered D-latch outputs updated on CP rising edge - used for parallel data storage and bus interfacing. |
| 3, 6, 11, 14 (Q̄0–Q̄3) | Complementary outputs | Inverted versions of Qn outputs - eliminates need for external inverters in differential signaling or toggle logic. |
| 4, 5, 12, 13 (D0–D3) | Data inputs | Individual D inputs per latch - allows independent loading of each stage in pipeline or register-file applications. |
| 8 (GND) | Ground reference | Primary return path for all internal logic and I/O - must be low-impedance to maintain noise immunity and timing integrity. |
| 9 (CP) | Clock input | Positive-edge-triggered control signal - sampling occurs only on LOW-to-HIGH transition; requires clean, monotonic edges. |
| 16 (VCC) | Power supply | Single positive supply rail - powers all internal logic and output drivers; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Quad D-type flip-flops | Four independent, edge-triggered storage elements in one IC - reduces board space and interconnect complexity versus discrete solutions. |
| Asynchronous master reset | Single-pin global reset clears all outputs to LOW without waiting for clock edge - essential for deterministic system startup. |
| CMOS-level input compatibility | Input thresholds scale with VCC - ensures interoperability with both 3.3 V and 5 V microcontrollers and FPGAs without level translation. |
| Input clamp diodes | Integrated protection enables safe connection to signals exceeding VCC when series resistors limit current - simplifies interface design with higher-voltage sensors or buses. |
Applications
| Industrial PLC Input Latching | Digital Panel Meter Data Capture |
|---|---|
Use Scenario: Capturing momentary sensor states (e.g., limit switches, emergency stops) in programmable logic controllers before scan cycle execution. IC Role / Device Role / Timing Role: Synchronizes asynchronous field inputs to the PLC's internal clock domain using MR for periodic clearing and CP for deterministic sampling. Use Value: Eliminates metastability risk and ensures glitch-free state capture at up to 24 MHz, supporting real-time response within 50 ns timing budget. | Use Scenario: Holding digitized ADC readings for display refresh in handheld multimeters and process monitors. IC Role / Device Role / Timing Role: Stores 4-bit BCD or binary values from successive ADC conversions, with Q/Q̄ outputs driving dual seven-segment decoder inputs. Use Value: Reduces external component count by providing native complementary outputs - avoids need for four discrete inverters in display driver paths. |
| Serial-to-Parallel Shift Register Stage | Microcontroller GPIO Expansion |
Use Scenario: Converting serial data streams (e.g., SPI-shifted bits) into parallel nibbles for LED matrix control or relay bank addressing. IC Role / Device Role / Timing Role: Acts as final latch stage after shift register chain - CP aligned to SPI clock edge, MR used to load complete byte before output enable. Use Value: Enables precise timing control over parallel output assertion with <30 ns skew between Q0–Q3, ensuring simultaneous LED or relay activation. | Use Scenario: Extending limited MCU GPIO count for controlling discrete actuators (valves, solenoids) in embedded HVAC or test equipment. IC Role / Device Role / Timing Role: Provides four additional synchronized output bits driven from MCU port pins via D0–D3, with MR tied to reset line for fail-safe deactivation. Use Value: Supports hot-plug-safe operation via MR-initiated safe state (all outputs LOW), preventing unintended actuator activation during power-up or firmware reload. |
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 |
|---|---|---|---|
| SN74HCT175N | 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 originates from legacy 74LS devices | Select when interfacing directly with 74LS-series outputs without pull-ups or level shifters. |
| MC74HC175AD | Same logic function and pinout; manufactured by ON Semiconductor with identical AC/DC specs per datasheet rev. 5 | No functional difference - validated drop-in replacement with same SOIC-N package and thermal profile | Choose for dual-sourcing flexibility or extended lifecycle availability where TI stock is constrained. |
Compared with SN74HC175ANS, SN74HCT175N offers improved input compatibility with older TTL families but sacrifices some noise margin at lower VCC, while MC74HC175AD provides identical electrical behavior and mechanical fit - making it ideal for second-source assurance without design revalidation.
Availability
SN74HC175ANS is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and embedded digital logic applications requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for SN74HC175ANS 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 U.S.-based semiconductor company specializing in analog, embedded processing, and logic ICs, with leadership in industrial, automotive, and communications markets.
The SN74HC175ANS belongs to the industry-standard 74HC logic family designed for low-power, high-noise-immunity digital signal routing and storage in non-automotive industrial and commercial equipment.
FAQ
What is the maximum clock frequency supported by SN74HC175ANS?
The SN74HC175ANS supports a maximum clock frequency of 24 MHz at VCC = 6.0 V with CL = 50 pF, based on its 30 ns maximum propagation delay and 14 ns minimum pulse width. At 5 V operation, fmax reaches 20 MHz. These values assume proper PCB layout, decoupling, and signal integrity - actual system-level frequency may be lower due to board-level parasitics and load capacitance.
Does SN74HC175ANS require external pull-up or pull-down resistors on its inputs?
No, SN74HC175ANS does not require external pull-up or pull-down resistors on D, CP, or MR inputs under normal operation because its CMOS inputs have negligible leakage current (<1 µA) and defined VIH/VIL thresholds. However, floating inputs must be avoided - unused D inputs should be tied to VCC or GND, and MR should be actively driven or pulled HIGH via a resistor if not controlled by logic.
Can SN74HC175ANS operate reliably at 3.3 V supply voltage?
Yes, SN74HC175ANS is fully specified down to 2.0 V and operates reliably at 3.3 V. At VCC = 3.3 V, VIH is guaranteed ≥2.3 V and VIL ≤1.0 V, providing >1.3 V noise margin. Propagation delay increases to ~44 ns max, supporting clock rates up to ~12 MHz - suitable for interfacing with 3.3 V microcontrollers and FPGAs.
What is the purpose of the complementary Q̄ outputs on SN74HC175ANS?
The Q̄0–Q̄3 outputs on SN74HC175ANS provide inverted logic states synchronized with their corresponding Q outputs. This eliminates the need for external inverters in applications such as toggle flip-flop construction, differential bus driving, or active-low enable logic - reducing component count, propagation delay, and board area in compact digital designs.
Is SN74HC175ANS pin-compatible with older 74LS175 or 74ALS175 devices?
No, SN74HC175ANS is not pin-compatible with 74LS175 or 74ALS175. While all share the same 16-pin SOIC footprint and basic function, the pin assignments differ: LS/ALS variants place Q0/Q̄0 on pins 2/3 but locate MR on pin 11 instead of pin 1. Using SN74HC175ANS as a replacement requires PCB layout modification to match its MR-on-pin-1 and Q/Q̄ interleaved pinout.
SN74HC175ANS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 85 MHz
- Max Propagation Delay @ V, Max CL:
- 24ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SN74HC175ANS FAQ
1.How can I place an order for SN74HC175ANS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC175ANS 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 SN74HC175ANS reliable?
The price and inventory of SN74HC175ANS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC175ANS is usually 5 days.
3.What payment methods are accepted for SN74HC175ANS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC175ANS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC175ANS?
SN74HC175ANS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC175ANS 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 SN74HC175ANS?
For technical support, including SN74HC175ANS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC175ANS requirements.
6.How does Aetrix verify that SN74HC175ANS is sourced from the original manufacturer or authorized distributors?
All SN74HC175ANS 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 SN74HC175ANS meets industry standards.
7.What is the process for return or replacement of SN74HC175ANS?
All SN74HC175ANS units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC175ANS, 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 SN74HC175ANS part is unused and in its original packaging.
Return procedure for SN74HC175ANS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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