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Texas Instruments CD74AC175NSR
- Part No.:
- CD74AC175NSR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
CD74AC175NSR.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,650
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Product details
Overview
CD74AC175NSR from Texas Instruments is a quadruple positive-edge-triggered D-type flip-flop with asynchronous clear, designed for synchronous data storage and register functions in digital logic systems. It operates across 1.5V–5.5V supply, delivers ±24mA output drive, features complementary Q/Q̅ outputs per stage, and supports clock frequencies up to 114MHz at 5V. It is used in buffer registers, shift registers, and pattern generators requiring reliable edge-triggered storage.
For engineers reviewing the CD74AC175NSR datasheet, CD74AC175NSR pinout, CD74AC175NSR application, or CD74AC175NSR equivalent, this page provides verified functional identity, SOIC-16 pin mapping, timing specifications across 1.5V/3.3V/5V operation, ESD robustness (±2kV HBM), and validated alternatives for register-level logic replacement.
Technical Context
The CD74AC175NSR implements four independent D-type flip-flops sharing a common clock (CLK) and global asynchronous clear (CLR) input. Each stage provides true and complemented outputs (Q and Q̅), enabling direct implementation of toggle, latch, or dual-rail interface functions without external inverters.
Its AC CMOS process ensures balanced propagation delays (tPLH/tPHL ≤12.2ns max at 5V), noise immunity at 30% of VCC, and SCR-latchup resistance. Input transition rate limits (20–50 ns/V) and defined setup/hold times (tsu = th = 2ns) support stable operation in high-speed synchronous designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - Enables interoperability with 1.8V, 3.3V, and 5V logic families without level shifters. |
| Max Clock Frequency | 114 MHz at VCC = 5V - Supports high-throughput data capture in register files and pipeline stages. |
| Output Drive | ±24 mA - Drives 15 F-series TTL loads directly; eliminates need for buffer stages in fanout-critical paths. |
| Propagation Delay | 3.1–12.2 ns (tPLH/tPHL, VCC = 5V) - Ensures tight timing margins in multi-stage synchronous logic chains. |
| ESD Rating | ±2000 V HBM - Meets MIL-STD-883 requirement; reduces risk of field failure during handling and assembly. |
| Operating Temperature | –55°C to +125°C - Qualified for extended industrial and automotive under-hood applications. |
| Power Dissipation Cap. | 55 pF (Cpd, VCC = 5V) - Enables accurate dynamic power estimation in clocked logic blocks. |
Pinout & Package
CD74AC175NSR is housed in a 16-pin SOIC (D) package measuring 9.9 mm × 6.0 mm (body: 9.9 mm × 3.9 mm), optimized for surface-mount assembly and thermal reliability (RθJA = 106.6°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLR | Asynchronous active-low clear input - Resets all four flip-flops independently of clock edge. |
| 2, 3, 6, 7, 10, 11, 14, 15 | Q / Q̅ | Complementary outputs per stage - Provides both true and inverted data for flexible routing and logic reduction. |
| 4, 5, 12, 13 | D | Data inputs for flip-flops 1–4 - Accepts synchronous data on rising CLK edge when CLR is high. |
| 8 | GND | Ground reference - Must be low-impedance connection to minimize switching noise coupling. |
| 9 | CLK | Positive-edge-triggered clock - Controls simultaneous sampling of all D inputs; edge-sensitive only. |
| 16 | VCC | Power supply - Requires local 0.1 µF bypass capacitor per TI layout guidelines to suppress supply transients. |
Key Features
| Feature | Design Value |
|---|---|
| Quadruple D-type with Clear | Four independent edge-triggered storage elements with shared asynchronous reset - simplifies control of multi-bit registers. |
| Double-rail Outputs | True and complemented Q/Q̅ per stage - eliminates external inverters in differential signaling or XOR-based logic. |
| Balanced Propagation Delays | tPLH ≈ tPHL across all voltage rails - ensures minimal skew between set/reset paths in timing-critical state machines. |
| Buffered Inputs | High-impedance, noise-immune inputs - prevents floating node issues and improves signal integrity in unterminated traces. |
| SCR-Latchup Resistant | CMOS process with inherent latchup immunity - enables safe operation in noisy industrial environments with ground bounce. |
Applications
| Buffer/Storage Registers | Shift Registers |
|---|---|
|
Use Scenario: Temporary holding of parallel data between bus transfers in microcontroller peripherals or FPGA I/O blocks. IC Role / Device Role / Timing Role: Synchronous data latch providing edge-aligned storage with global reset capability. Use Value: Eliminates metastability risk via controlled clock domain crossing and supports deterministic reset sequencing. |
Use Scenario: Serial-to-parallel conversion in LED matrix drivers or sensor data acquisition pipelines. IC Role / Device Role / Timing Role: Cascadable D-flip-flop stage enabling bit-shift operations under common clock control. Use Value: Complementary outputs allow direct feedback to next stage's D input without external inversion logic. |
| Pattern Generators | State Machine Registers |
|
Use Scenario: Repetitive waveform synthesis in test equipment or programmable logic controllers. IC Role / Device Role / Timing Role: Deterministic sequence generator using preset/clear and feedback logic. Use Value: Asynchronous CLR enables immediate pattern restart; double-rail outputs simplify combinatorial feedback design. |
Use Scenario: Control register storage in finite-state machines implementing protocol engines or motor commutation logic. IC Role / Device Role / Timing Role: Edge-triggered state retention element synchronized to system clock domain. Use Value: Guaranteed setup/hold (2ns) and low propagation skew ensure reliable state transitions at >100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AC175N | Same AC logic family, identical pinout and function, but in PDIP-16 package - no SOIC footprint compatibility. | Preferred for through-hole prototyping or legacy board rework where SOIC mounting is not available. | Select SN74AC175N only when manual soldering or socket-based validation is required; otherwise CD74AC175NSR offers superior thermal performance and density. |
| CD74HC175M96 | HC-family variant: lower drive (±4mA), slower max speed (25MHz at 5V), wider VCC range (2–6V), higher input capacitance (10pF). | Suitable for low-power, cost-sensitive consumer applications where speed and drive strength are secondary. | Choose CD74HC175M96 only if system clock <25MHz and load drive ≤4mA; CD74AC175NSR is mandatory for >70MHz or ≥15-Fanout requirements. |
Compared with SN74AC175N and CD74HC175M96, CD74AC175NSR uniquely combines SOIC-16 packaging, 114MHz operation, ±24mA drive, and –55°C to +125°C qualification - making it the only option for high-speed, high-reliability surface-mount register applications.
Availability
CD74AC175NSR is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74AC175NSR 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 expertise in high-reliability logic families and industrial-grade qualification.
The CD74AC175NSR belongs to TI's Advanced CMOS (AC) logic series, engineered for high-speed, low-power, noise-immune digital interfacing in demanding industrial and automotive environments.
FAQ
What is the maximum clock frequency supported by CD74AC175NSR at 3.3V operation?
The CD74AC175NSR supports a maximum clock frequency of 81 MHz at VCC = 3.3V ± 0.3V over the –40°C to +85°C temperature range, as specified in Section 5.7 of the TI datasheet. This value reflects guaranteed timing performance under recommended operating conditions, not typical or derated values.
Does CD74AC175NSR have true and complemented outputs on each flip-flop stage?
Yes, CD74AC175NSR provides complementary Q and Q̅ outputs for each of its four D-type flip-flops - pins 2/3 (1Q/1Q̅), 6/7 (2Q/2Q̅), 10/11 (3Q/3Q̅), and 14/15 (4Q/4Q̅). This dual-rail capability eliminates the need for external inverters in feedback or differential logic paths.
What is the absolute maximum supply voltage rating for CD74AC175NSR?
The absolute maximum supply voltage (VCC) for CD74AC175NSR is 6 V, as stated in Section 5.1 Absolute Maximum Ratings. Operation above 5.5 V - the recommended maximum - risks permanent damage even if within the 6 V limit, and is not supported for functional use.
Is CD74AC175NSR compatible with 1.8V logic systems?
Yes, CD74AC175NSR is fully compatible with 1.8V logic systems: its recommended operating range starts at 1.5V, and it guarantees VIH = 1.2V and VIL = 0.3V at VCC = 1.5V - ensuring reliable recognition of standard 1.8V CMOS logic levels with margin.
What package type and RoHS status does CD74AC175NSR use?
CD74AC175NSR is supplied in a 16-pin SOIC (D) package with RoHS-compliant NIPDAU lead finish and MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH). The part marking is "AC175M", and it ships in 2500-unit tape-and-reel format (CD74AC175M96).
CD74AC175NSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 100 MHz
- Max Propagation Delay @ V, Max CL:
- 12.2ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
CD74AC175NSR FAQ
1.How can I place an order for CD74AC175NSR through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74AC175NSR 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 CD74AC175NSR reliable?
The price and inventory of CD74AC175NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74AC175NSR is usually 5 days.
3.What payment methods are accepted for CD74AC175NSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74AC175NSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74AC175NSR?
CD74AC175NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74AC175NSR 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 CD74AC175NSR?
For technical support, including CD74AC175NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74AC175NSR requirements.
6.How does Aetrix verify that CD74AC175NSR is sourced from the original manufacturer or authorized distributors?
All CD74AC175NSR 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 CD74AC175NSR meets industry standards.
7.What is the process for return or replacement of CD74AC175NSR?
All CD74AC175NSR units undergo pre-shipment inspection (PSI). If there is an issue with CD74AC175NSR, 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 CD74AC175NSR part is unused and in its original packaging.
Return procedure for CD74AC175NSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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