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Texas Instruments SN74LV175AD
- Part No.:
- SN74LV175AD
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LV175AD.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
SN74LV175AD from Texas Instruments is a quadruple positive-edge-triggered D-type flip-flop with asynchronous clear, designed for 2 V to 5.5 V operation. It features complementary Q and Q̅ outputs per stage, 7.5 ns maximum propagation delay at 5 V, Ioff support for partial-power-down mode, and mixed-mode voltage interface capability across all ports. It serves as a synchronous storage register in digital control logic and data latching circuits.
For engineers reviewing the SN74LV175AD datasheet, SN74LV175AD pinout, SN74LV175AD application, or SN74LV175AD equivalent, this page delivers verified functional identity, SOIC-16 package mapping, timing and electrical specifications at 2.5 V/3.3 V/5 V, real-world noise performance (VOLP < 0.8 V, VOHV > 2.3 V), and validated alternative options for register-level logic replacement.
Technical Context
The SN74LV175AD implements four independent D-type latches synchronized to the rising edge of CLK, each with dedicated CLR input enabling asynchronous reset. Its CMOS design ensures rail-to-rail output swing, low static current (20 µA max ICC), and input tolerance up to 5.5 V regardless of VCC level - supporting level translation between 3.3 V and 5 V domains.
It incorporates Ioff circuitry that disables outputs during power-down, preventing backflow current when VCC = 0 V, and meets JEDEC JESD78 Class II latch-up immunity. The device operates across –40°C to +85°C and supports capacitive loads up to 50 pF with guaranteed timing margins at all rated supply voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - enables interoperability across 2.5 V, 3.3 V, and 5 V logic systems without level shifters. |
| tpd (max) | 7.5 ns at VCC = 5 V - supports reliable operation up to 125 MHz fmax with 15 pF load. |
| Ioff Current | < 5 µA at VCC = 0 V - prevents damaging current flow during hot-insertion or partial power-down sequences. |
| VOLP / VOHV | < 0.8 V / > 2.3 V at VCC = 3.3 V - reduces ground bounce and undershoot-induced signal integrity issues in dense PCB layouts. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and automation applications. |
| Input Voltage Tolerance | 0 V to 5.5 V on all inputs - allows safe interfacing with higher-voltage controllers while powered from lower VCC. |
| Power Dissipation Cap | 14.5 pF at 5 V - enables accurate dynamic power estimation for thermal management in multi-device logic arrays. |
Pinout & Package
SN74LV175AD is supplied in a 16-pin SOIC (D) package measuring 10.3 mm × 1.95 mm (body size), with standard 1.27 mm pitch and gull-wing leads. The package is RoHS-compliant, moisture sensitivity level 1, and rated for reflow up to 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLR | Asynchronous active-low clear input - resets all four flip-flops independently of clock edge. |
| 2,3 | 1Q, 1Q̅ | Complementary outputs of first flip-flop - enables differential signaling or dual-sense logic sampling. |
| 4 | 1D | Data input for first flip-flop - sampled on rising CLK edge if setup/hold times are met. |
| 5,12,13 | 2D, 3D, 4D | Independent data inputs for remaining three flip-flops - no internal fan-in; fully parallel operation. |
| 6,7,10,11,14,15 | 2Q, 2Q̅, 3Q, 3Q̅, 4Q, 4Q̅ | Complementary outputs for stages 2–4 - provides redundancy, polarity flexibility, and reduced external inversion. |
| 8 | GND | Ground reference for all internal logic and output drivers - must be low-impedance for noise control. |
| 9 | CLK | Global clock input - triggers all four flip-flops simultaneously on rising edge only. |
| 16 | VCC | Primary power supply - powers all logic and output stages; bypass capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | All inputs tolerate 0–5.5 V regardless of VCC setting - eliminates need for external level translators in mixed-supply systems. |
| Ioff partial-power-down protection | Outputs enter high-impedance state when VCC = 0 V - prevents back-current damage during board hot-swap or power sequencing. |
| Complementary Q/Q̅ outputs per stage | Reduces external inverters by 50% in toggle, enable/disable, or differential bus applications - saves board space and propagation delay. |
| Low ground bounce (VOLP < 0.8 V) | Minimizes simultaneous switching noise in multi-bit register banks - improves signal integrity in high-density digital control modules. |
| Guaranteed timing at 2.5 V/3.3 V/5 V | Validated setup/hold and propagation delays across full VCC range - simplifies design reuse across legacy and modern voltage domains. |
Applications
| Industrial PLC Input Latching | Automotive Body Control Module Register |
|---|---|
Use Scenario: Capturing sensor status (e.g., door open/closed, seatbelt fastened) in real time under noisy 12 V vehicle electrical environment. IC Role / Device Role / Timing Role: Synchronous data capture element - samples isolated switch inputs on system clock edge and holds state until next scan cycle. Use Value: Complementary outputs drive both enable and disable paths in safety-critical logic; Ioff prevents backfeed during battery disconnect events. |
Use Scenario: Storing actuator command states (e.g., mirror fold/unfold, window up/down) in microcontroller-peripheral interface layer. IC Role / Device Role / Timing Role: Output register buffer - isolates MCU GPIOs from motor driver ICs while maintaining deterministic update timing. Use Value: 3.3 V operation with 5.5 V-tolerant inputs allows direct connection to legacy 5 V sensor buses; low VOLP avoids false triggering of downstream comparators. |
| Test Equipment Pattern Generator | Medical Infusion Pump Control Logic |
Use Scenario: Generating precise, repeatable digital stimulus waveforms for IC functional testing using FPGA-controlled clocking. IC Role / Device Role / Timing Role: Parallel pattern register - holds 4-bit test vectors synchronized to system clock for driving DUT input pins. Use Value: 7.5 ns tpd at 5 V enables stable 100+ MHz pattern rates; complementary outputs reduce external logic for inverted test modes. |
Use Scenario: Holding infusion rate and alarm threshold settings in battery-powered portable devices requiring fail-safe state retention. IC Role / Device Role / Timing Role: Nonvolatile shadow register - stores critical configuration bits updated only during safe maintenance windows. Use Value: –40°C to +85°C rating ensures reliability across clinical environments; Ioff protects stored state during battery swap or brownout recovery. |
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 |
|---|---|---|---|
| SN74LVC175APWR | Lower VCC min (1.65 V), faster tpd (5.5 ns @ 3.3 V), but no Ioff support. | Suitable for low-voltage portable designs where partial-power-down is not required. | Select when operating below 2 V or prioritizing speed over power-down robustness. |
| 74HC175N | Higher VCC max (6 V), slower tpd (25 ns @ 4.5 V), no 5.5 V input tolerance, no Ioff. | Fits legacy 5 V-only systems with relaxed timing budgets and no mixed-voltage interfaces. | Choose only for cost-sensitive, non-industrial designs with fixed 5 V rails and no hot-swap requirements. |
Compared with SN74LV175AD, SN74LVC175APWR offers better low-voltage performance but lacks Ioff protection, while 74HC175N provides broader supply margin but sacrifices speed, noise immunity, and interface flexibility - making SN74LV175AD optimal for industrial mixed-voltage register applications requiring robustness and timing precision.
Availability
SN74LV175AD is available at Aetrix Electronics and suitable for industrial PLC input latching, automotive body control module registers, test equipment pattern generation, and medical infusion pump control logic requiring stable component supply across extended temperature ranges and mixed-voltage interfaces.
Supply support for SN74LV175AD 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 industrial, automotive, and communications markets.
The SN74LV175AD belongs to TI's LV logic family, engineered for low-voltage operation (2–5.5 V), high noise immunity, and compatibility with mixed-supply systems - targeting industrial control, automotive subsystems, and instrumentation where reliability and interface flexibility are critical.
FAQ
What is the maximum clock frequency supported by SN74LV175AD?
The SN74LV175AD supports up to 125 MHz maximum operating frequency at VCC = 5 V with CL = 15 pF, as specified in the Switching Characteristics table. At 3.3 V, fmax drops to 75 MHz under the same load. These values assume proper layout, decoupling, and adherence to setup/hold timing constraints - actual system-level frequency may be limited by board-level signal integrity and fan-out.
Does SN74LV175AD support partial-power-down operation?
Yes, SN74LV175AD includes Ioff circuitry that disables outputs when VCC = 0 V, limiting Ioff current to ≤ 5 µA. This prevents backflow current from live inputs into a powered-down device - a critical feature for hot-swap capable systems and multi-rail power sequencing in industrial and automotive applications.
Can SN74LV175AD interface directly with 5 V logic while powered from 3.3 V?
Yes, SN74LV175AD inputs tolerate voltages from 0 V to 5.5 V regardless of VCC level. When powered from 3.3 V, it safely accepts 5 V TTL or CMOS signals without clamping diodes or external resistors - enabling seamless level translation in mixed-voltage digital interfaces such as MCU-to-peripheral communication buses.
What is the purpose of complementary Q and Q̅ outputs on SN74LV175AD?
Each of the four flip-flops in SN74LV175AD provides both true (Q) and complement (Q̅) outputs. This eliminates the need for external inverters in applications requiring dual-polarity control signals - such as enabling/disabling paired drivers, generating differential clocks, or implementing set/reset logic - reducing component count, propagation delay, and board area.
Is SN74LV175AD pin-compatible with older 74LS175 or 74HC175 devices?
No, SN74LV175AD is not pin-compatible with 74LS175 or 74HC175. While all are 16-pin DIP/SOIC quad D-flip-flops, SN74LV175AD uses a different pinout: it places complementary outputs adjacent (e.g., pins 2 & 3 for 1Q/1Q̅), whereas 74HC175 assigns single-ended outputs only (pins 2, 5, 6, 9). Direct replacement requires PCB redesign - verify pin functions before substitution.
SN74LV175AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 165 MHz
- Max Propagation Delay @ V, Max CL:
- 9.3ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 1.4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN74LV175AD FAQ
1.How can I place an order for SN74LV175AD through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV175AD 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 SN74LV175AD reliable?
The price and inventory of SN74LV175AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV175AD is usually 5 days.
3.What payment methods are accepted for SN74LV175AD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV175AD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV175AD?
SN74LV175AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV175AD 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 SN74LV175AD?
For technical support, including SN74LV175AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV175AD requirements.
6.How does Aetrix verify that SN74LV175AD is sourced from the original manufacturer or authorized distributors?
All SN74LV175AD 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 SN74LV175AD meets industry standards.
7.What is the process for return or replacement of SN74LV175AD?
All SN74LV175AD units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV175AD, 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 SN74LV175AD part is unused and in its original packaging.
Return procedure for SN74LV175AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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