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Nexperia USA Inc. 74AHC273BQ,115
- Part No.:
- 74AHC273BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74AHC273BQ,115.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,583
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Product details
Overview
74AHC273BQ,115 from Nexperia is an octal positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), designed for synchronous data latching in digital logic systems. It operates from 2.0 V to 5.5 V, delivers propagation delays as low as 4.2 ns (VCC = 5 V, CL = 15 pF), supports 120 MHz maximum clock frequency, and features overvoltage-tolerant inputs up to 5.5 V-enabling reliable level translation in mixed-voltage 3.3 V/5 V microcontroller I/O buffering applications.
For engineers reviewing the 74AHC273BQ,115 datasheet, 74AHC273BQ,115 pinout, 74AHC273BQ,115 application, or 74AHC273BQ,115 equivalent, this device is selected for high-speed, low-power edge-triggered storage where deterministic timing, rail-to-rail input tolerance, and industrial temperature operation (–40 °C to +125 °C) are required in embedded control, bus interface, and state-holding circuits.
Technical Context
This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures the logic state of its Dn input on the LOW-to-HIGH transition of CP, provided setup (3.0 ns min) and hold (1.0 ns min) times are met. MR overrides clock and data, forcing all Qn outputs LOW asynchronously.
Input thresholds are CMOS-compatible (VIH = 3.85 V at VCC = 5.5 V; VIL = 1.65 V), and inputs tolerate up to 5.5 V regardless of VCC-enabling safe interfacing between 3.3 V logic and 5 V peripherals. The DHVQFN20 package (SOT764-1) provides thermal enhancement and space-efficient mounting for high-density PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - supports dual-rail system integration and brown-out resilience down to 2.0 V logic operation. |
| Propagation Delay (tpd) | 4.2 ns (typ, VCC = 5 V, CL = 15 pF) - enables sub-10 ns timing margins in high-speed synchronous designs. |
| Maximum Clock Frequency | 120 MHz (VCC = 5 V, CL = 15 pF) - suitable for fast data capture in microcontroller peripheral interfaces and address/data latching. |
| Input Overvoltage Tolerance | 5.5 V absolute max on all inputs - allows direct connection to 5 V buses without level shifters when powered from 3.3 V. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLCs, and extended-temperature embedded controllers. |
| Power Dissipation Capacitance | 14 pF - determines dynamic power consumption (PD = CPD × VCC² × fi × N); enables accurate power budgeting at 1 MHz switching. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - ensures robust handling during board assembly and field operation in electrostatic-prone environments. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 mm × 4.5 mm × 0.85 mm body, 20-terminal no-lead quad flat design with exposed thermal pad (GND-connected per datasheet recommendation). Pin 1 index located at top-left corner; terminal 1 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and output drivers; thermal pad must be connected to PCB ground plane for optimal thermal performance. |
| 2 | Q0 | Output of first D-type flip-flop; driven HIGH/LOW based on D0 state sampled at CP rising edge unless MR is asserted. |
| 3 | D0 | Data input for Q0; requires stable logic level ≥3.0 ns before and ≥1.0 ns after CP rising edge for reliable capture. |
| 4 | Q3 | Output of fourth flip-flop; shares same timing constraints and reset behavior as Q0–Q7. |
| 5 | D3 | Data input for Q3; electrically identical to D0–D7 with Schmitt-trigger input action for noise immunity. |
| 6 | Q2 | Output of third flip-flop; complements Q1/Q3 pairing for byte-aligned data storage in parallel bus architectures. |
| 7 | D2 | Data input for Q2; supports simultaneous 8-bit latch operation with matched propagation delay across all channels. |
| 8 | Q5 | Output of sixth flip-flop; used in multi-byte register files where synchronized read/write timing is critical. |
| 9 | D4 | Data input for Q4; positioned adjacent to Q4/Q5 for minimized trace skew in high-speed layout. |
| 10 | Q4 | Output of fifth flip-flop; forms lower nibble (Q0–Q3) and upper nibble (Q4–Q7) groupings for segmented bus control. |
| 11 | CP | Global clock input; LOW-to-HIGH transition triggers simultaneous sampling of all Dn inputs to update Qn outputs. |
| 12 | Q7 | Output of eighth flip-flop; final bit in octal latch; matches Q0–Q6 in drive strength (8 mA sink/source). |
| 13 | D7 | Data input for Q7; highest-order bit input; subject to same VIH/VIL thresholds and overvoltage tolerance as other Dn pins. |
| 14 | D6 | Data input for Q6; paired with Q6 for MSB-aligned storage in memory-mapped I/O registers. |
| 15 | Q6 | Output of seventh flip-flop; completes octal output set; exhibits identical VOL/VOH specs across full voltage/temp range. |
| 16 | Q1 | Output of second flip-flop; used in counter enable paths and status register feedback loops requiring precise edge alignment. |
| 17 | D1 | Data input for Q1; placed near Q1 for minimal interconnect delay; benefits from Schmitt-trigger hysteresis (≥0.5 V typical). |
| 18 | D5 | Data input for Q5; symmetrically routed with D4/D6 to maintain signal integrity in 8-bit parallel traces. |
| 19 | MR | Asynchronous master reset; active LOW; forces all Qn outputs LOW independently of CP or Dn states-critical for system initialization. |
| 20 | VCC | Positive supply rail; decoupling capacitor (100 nF ceramic) required within 5 mm of pin for stable high-frequency operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0 V to 5.5 V operation enables single-supply compatibility across 3.3 V and 5 V logic families without external regulators. |
| Overvoltage-Tolerant Inputs | All inputs withstand 5.5 V regardless of VCC-eliminates need for discrete level translators in mixed-voltage FPGA/microcontroller I/O expansion. |
| Schmitt-Trigger Inputs | Input hysteresis improves noise immunity on slow or noisy control lines (e.g., pushbutton debouncing, sensor interface). |
| Industrial Temperature Range | Specified from –40 °C to +125 °C ensures reliable operation in motor drives, power supplies, and outdoor industrial gateways. |
| Low Dynamic Power | 14 pF CPD and <80 μA ICC at VCC = 5.5 V minimize heat generation in thermally constrained embedded modules. |
| Common Clock & Reset | Single CP and MR pins simplify PCB routing and reduce FPGA GPIO usage versus discrete flip-flop implementations. |
Applications
| Microcontroller I/O Expansion | Parallel Bus Interface Latching |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU by adding 8-bit bidirectional data latches for peripheral control. IC Role / Device Role / Timing Role: Synchronizes asynchronous peripheral signals to the MCU clock domain using CP edge-triggering and provides hardware reset via MR. Use Value: Eliminates software bit-banging overhead; guarantees deterministic 4.2 ns input-to-output timing for real-time response to external events. |
Use Scenario: Capturing 8-bit address/data bus signals from a legacy 8051-based controller for debugging or protocol conversion. IC Role / Device Role / Timing Role: Acts as a transparent D-latch buffer, holding bus values stable during CPU read cycles triggered by CP rising edge. Use Value: Prevents bus contention and metastability; supports 120 MHz sampling rate-exceeding typical 8051 bus speeds by 2×. |
| Industrial Sensor Data Acquisition | LED Matrix Row Driver Control |
|
Use Scenario: Latching analog-to-digital converter (ADC) output bits in a programmable logic controller (PLC) input module. IC Role / Device Role / Timing Role: Stores ADC parallel output on CP edge; MR clears latched data during system power-up or fault recovery. Use Value: Ensures atomic capture of 8-bit sensor readings; overvoltage-tolerant inputs accept 5 V ADC outputs while operating from 3.3 V VCC. |
Use Scenario: Driving row select lines of a 8×8 LED matrix in multiplexed display systems using microcontroller PWM timing. IC Role / Device Role / Timing Role: Holds row-enable states steady during column scanning; CP synchronized to PWM frame clock for flicker-free operation. Use Value: Provides 8 mA output drive per Qn pin-directly sourcing LED rows without external transistors; reduces BOM count by 8x. |
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 |
|---|---|---|---|
| 74AHCT273BQ,115 | TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V) vs. CMOS-level inputs on AHC version; otherwise identical pinout, timing, and packaging. | Better suited for interfacing with legacy 5 V TTL logic; less suitable for 3.3 V-only systems due to higher input threshold mismatch. | Select AHCT if driving from standard 5 V TTL outputs; choose AHC for 3.3 V CMOS or mixed-voltage translation. |
| SN74LVC273PWR | Lower VCC range (1.65–3.6 V), 3.3 V only; faster tpd (3.4 ns typ at 3.3 V); no overvoltage tolerance beyond VCC + 0.3 V. | Optimized for modern low-voltage SoCs; unsuitable for 5 V bus interfacing or industrial temp ranges above +85 °C. | Prefer LVC for battery-powered 3.3 V designs needing lowest power; retain AHC for 2.0–5.5 V flexibility and ruggedness. |
Compared with 74AHCT273BQ,115 and SN74LVC273PWR, the 74AHC273BQ,115 uniquely balances wide voltage operation, 5.5 V input tolerance, and industrial temperature support-making it the only choice for mixed-rail, high-reliability embedded control where voltage translation and thermal margin are non-negotiable.
Availability
74AHC273BQ,115 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, parallel bus interface latching, and industrial sensor data acquisition requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for 74AHC273BQ,115 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
Nexperia is a global semiconductor expert delivering high-performance, reliable logic, discrete, and MOSFET solutions with leadership in efficiency, miniaturization, and quality for industrial, automotive, and consumer markets.
The 74AHC273BQ,115 belongs to Nexperia's advanced AHC logic family, engineered for low-power, high-speed, mixed-voltage digital interfacing in space-constrained and thermally demanding embedded systems.
FAQ
What is the maximum clock frequency supported by the 74AHC273BQ,115?
The 74AHC273BQ,115 supports up to 120 MHz maximum clock frequency at VCC = 5.0 V with 15 pF load capacitance, as specified in Table 7 of the datasheet. At 50 pF load, the maximum frequency drops to 80 MHz. Performance remains guaranteed across the full –40 °C to +125 °C operating range.
Can the 74AHC273BQ,115 safely interface between a 3.3 V microcontroller and a 5 V peripheral?
Yes-the 74AHC273BQ,115 has overvoltage-tolerant inputs rated to 5.5 V regardless of VCC level. When powered from 3.3 V, its Dn and MR inputs accept 5 V logic signals without damage or level-shifting circuitry, making it ideal for bidirectional voltage translation in mixed-voltage systems.
Is the thermal pad on the DHVQFN20 package required to be soldered to ground?
The exposed thermal pad (terminal 1) is not electrically required to be soldered but is strongly recommended for thermal performance. If soldered, it must be connected to PCB ground plane; floating connection is acceptable but reduces thermal dissipation capability by ~30 % compared to grounded mounting.
How does the master reset (MR) function interact with the clock input?
MR is asynchronous and active LOW: asserting MR forces all Qn outputs LOW immediately, overriding any ongoing clock activity or data input states. MR deassertion (HIGH) does not trigger output changes-outputs remain latched until the next valid CP rising edge, preserving data integrity during reset release.
74AHC273BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 110 MHz
- Max Propagation Delay @ V, Max CL:
- 11ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74AHC273BQ,115 FAQ
1.How can I place an order for 74AHC273BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC273BQ,115 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 74AHC273BQ,115 reliable?
The price and inventory of 74AHC273BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC273BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHC273BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC273BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC273BQ,115?
74AHC273BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC273BQ,115 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 74AHC273BQ,115?
For technical support, including 74AHC273BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC273BQ,115 requirements.
6.How does Aetrix verify that 74AHC273BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHC273BQ,115 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 74AHC273BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHC273BQ,115?
All 74AHC273BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC273BQ,115, 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 74AHC273BQ,115 part is unused and in its original packaging.
Return procedure for 74AHC273BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHC273BQ,115 Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
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