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Texas Instruments 74ACT11273DWR
- Part No.:
- 74ACT11273DWR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74ACT11273DWR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,400
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Product details
Overview
74ACT11273DWR from Texas Instruments is an octal positive-edge-triggered D-type flip-flop with asynchronous clear, implemented in EPIC 1-µm CMOS technology. It operates from −40°C to 85°C at 4.5–5.5 V, delivers ±24 mA output drive, supports 85 MHz clock frequency, and features TTL-compatible inputs for direct interfacing with legacy logic. It is used in high-speed buffer/storage register applications requiring flow-through PCB layout.
For engineers reviewing the 74ACT11273DWR datasheet, 74ACT11273DWR pinout, 74ACT11273DWR application, or 74ACT11273DWR equivalent, key selection criteria include setup/hold timing (tsu = 4 ns, th = 1 ns), low-noise power distribution (multiple center-pin VCC/GND), latch-up immunity (500 mA at 125°C), and SOIC-24 package compatibility with industrial temperature range operation.
Technical Context
This device implements eight independent D-type flip-flops, each with dedicated D input, CLK, CLR, and Q output. All flip-flops share a common clock and asynchronous clear, enabling synchronized data capture and global reset. The flow-through architecture places inputs on one side and outputs on the opposite side of the SOIC-24 package to minimize trace crossovers.
It uses EPIC (Enhanced-Performance Implanted CMOS) process technology, delivering TTL-voltage compatibility (VIH = 2 V, VIL = 0.8 V) while maintaining CMOS power efficiency. Multiple VCC and GND pins at the center of the package reduce simultaneous switching noise and improve high-speed signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74ACT - Advanced CMOS TTL-compatible, 5 V supply only |
| Clock Frequency | 85 MHz max - enables high-speed synchronous data latching in register files |
| Output Drive | ±24 mA - sufficient to drive 50-Ω transmission lines or fan-out to 10+ LSTTL loads |
| Setup/Hold Time | tsu = 4 ns, th = 1 ns - tight timing window demands precise clock routing and minimal skew |
| Supply Range | 4.5 V to 5.5 V - not 3.3 V compatible; requires stable 5 V rail with decoupling at multiple VCC pins |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments without derating |
| Power Dissipation Cap. | 73 pF - used to calculate dynamic power (P = Cpd × V² × f) at 1 MHz and CL = 50 pF |
Pinout & Package
74ACT11273DWR is housed in a 24-pin SOIC (DW) package with 300-mil width, gull-wing leads, and JEDEC MS-013 compliant outline. Pin 1 is marked by a beveled corner or notch; the package includes four GND pins (pins 5, 6, 7, 8) and two VCC pins (pins 13, 14) centrally located to suppress ground bounce.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 9, 10, 11, 12 | D₁–D₈ Data Inputs | Asynchronous data inputs for each flip-flop; TTL-compatible (2 V VIH min) |
| 13, 14 | VCC | Primary power supply pins; dual placement reduces IR drop and switching noise |
| 5, 6, 7, 8 | GND | Ground return paths; four pins minimize ground impedance and improve EMI margin |
| 15, 16, 17, 20, 21, 22, 23, 24 | Q₁–Q₈ Outputs | Registered complementary outputs; capable of sourcing/sinking ±24 mA |
| 18 | CLK | Global positive-edge clock input; all flip-flops triggered simultaneously on rising edge |
| 19 | CLR | Active-low asynchronous clear; forces all Q outputs low regardless of clock state |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pin arrangement | Input pins on left (1–4, 9–12), outputs on right (15–17, 20–24) - eliminates layer jumps and reduces PCB trace length |
| Multiple center-pin VCC/GND | Two VCC (13,14) and four GND (5–8) pins - lowers power delivery impedance and suppresses simultaneous switching noise |
| TTL-voltage compatible inputs | VIH = 2 V, VIL = 0.8 V - allows direct connection to 74LS/74F logic without level-shifting |
| 500-mA latch-up immunity | Tested per JEDEC JESD78 at 125°C - ensures robustness against transient-induced SCR triggering in noisy environments |
| EPIC 1-µm CMOS process | Enables high speed (85 MHz) with low static current (ICC ≤ 80 µA) and rail-to-rail output swing |
Applications
| Buffer/Storage Registers | Shift Registers |
|---|---|
|
Use Scenario: Holding parallel data between bus cycles in microprocessor-based control systems. IC Role / Device Role / Timing Role: Acts as an 8-bit transparent storage element synchronized to system clock edges. Use Value: Enables clean data handoff with 4 ns setup time and no internal propagation delay stacking across stages. |
Use Scenario: Serial-to-parallel conversion in digital test equipment using cascaded clock domains. IC Role / Device Role / Timing Role: Provides eight independently controllable latch stages with shared clock and clear. Use Value: Flow-through pinout allows daisy-chained PCB layout with minimal skew; 85 MHz max clock supports >100 Mbps serial rates. |
| Pattern Generators | High-Speed Data Acquisition Interfaces |
|
Use Scenario: Generating deterministic stimulus waveforms for ASIC validation benches. IC Role / Device Role / Timing Role: Stores and clocks out predefined bit patterns under microcontroller control. Use Value: Asynchronous CLR allows instant pattern reset; ±24 mA drive directly drives 50-Ω scope probes or FPGA inputs. |
Use Scenario: Capturing parallel ADC outputs before transfer to memory or DSP in real-time instrumentation. IC Role / Device Role / Timing Role: Synchronizes burst-mode analog sampling data to a stable system clock domain. Use Value: Tight 1 ns hold time prevents metastability; multiple GND pins maintain signal integrity during fast edge transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ACT574DW | Octal D-type transparent latch (no clock edge sensitivity); identical SOIC-20 package, not pin-compatible | Latches data while G is high; unsuitable for edge-triggered register chains | Select 74ACT574DW only when level-sensitive latching-not edge-triggered storage-is required. |
| SN74LVC8T245RHLR | 8-bit dual-supply bus transceiver with direction control; 3.3 V I/O, 5 V tolerant; different function and pinout | Provides bidirectional voltage translation, not registered storage | Choose SN74LVC8T245RHLR for level-shifting between 3.3 V and 5 V buses-not for clocked data retention. |
Compared with 74ACT11273DWR, the 74ACT574DW offers level-sensitive latching but lacks edge-triggered behavior and has fewer pins, while the SN74LVC8T245RHLR provides voltage translation instead of storage-neither matches the exact 8-bit positive-edge DFF + async clear functionality or SOIC-24 pinout of the 74ACT11273DWR.
Availability
74ACT11273DWR is available at Aetrix Electronics and suitable for industrial control, test instrumentation, and legacy logic interface applications requiring stable component supply despite its obsolete status through selective lifecycle management channels.
Supply support for 74ACT11273DWR 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74ACT family was developed to deliver TTL-compatible speed and drive with CMOS power efficiency, targeting high-reliability industrial and computing systems requiring 5 V logic interoperability.
FAQ
Is 74ACT11273DWR compatible with 3.3 V logic systems?
No, 74ACT11273DWR is not 3.3 V compatible. It requires a 4.5–5.5 V supply and features TTL-compatible input thresholds (VIH = 2 V min, VIL = 0.8 V max), making it suitable only for 5 V systems. Interfacing with 3.3 V devices requires level translation. The 74ACT11273DWR does not support mixed-voltage operation or I/O tolerance outside its specified VCC range.
What does "OBSOLETE" status mean for 74ACT11273DWR?
"OBSOLETE" indicates Texas Instruments has discontinued production of the 74ACT11273DWR. It is no longer manufactured or stocked by TI, but Aetrix Electronics maintains limited inventory through authorized legacy sourcing channels. Customers should plan for long-term obsolescence mitigation, including redesign evaluation or secured last-time buy support for the 74ACT11273DWR.
Can 74ACT11273DWR replace 74ACT11273DW?
Yes - 74ACT11273DWR and 74ACT11273DW share identical electrical specifications, pinout, and SOIC-24 (DW) package. The "R" suffix denotes tape-and-reel packaging (vs. tube for DW), with no functional or parametric difference. Both are obsolete, but 74ACT11273DWR remains the standard reel-packaged variant referenced in design documentation and BOMs.
Does 74ACT11273DWR support hot-swap or live-insertion?
No, 74ACT11273DWR does not support hot-swap. Its absolute maximum ratings do not include partial-power-up conditions, and the device lacks power-up/reset sequencing features or Ioff protection. Applying VCC before GND or driving inputs while unpowered may violate VI/VCC limits and cause latch-up. System-level hot-swap requires external protection circuitry for the 74ACT11273DWR.
What is the significance of "flow-through architecture" in 74ACT11273DWR?
Flow-through architecture means input pins (D₁–D₈) are placed on the left side and output pins (Q₁–Q₈) on the right side of the SOIC-24 package - enabling straight-line PCB trace routing from upstream logic to downstream loads without layer changes or vias. This reduces parasitic inductance, minimizes signal skew, and simplifies high-speed layout for the 74ACT11273DWR.
74ACT11273DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74ACT11273DWR FAQ
1.How can I place an order for 74ACT11273DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT11273DWR 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 74ACT11273DWR reliable?
The price and inventory of 74ACT11273DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT11273DWR is usually 5 days.
3.What payment methods are accepted for 74ACT11273DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT11273DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT11273DWR?
74ACT11273DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT11273DWR 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 74ACT11273DWR?
For technical support, including 74ACT11273DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT11273DWR requirements.
6.How does Aetrix verify that 74ACT11273DWR is sourced from the original manufacturer or authorized distributors?
All 74ACT11273DWR 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 74ACT11273DWR meets industry standards.
7.What is the process for return or replacement of 74ACT11273DWR?
All 74ACT11273DWR units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT11273DWR, 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 74ACT11273DWR part is unused and in its original packaging.
Return procedure for 74ACT11273DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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