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STMicroelectronics 74VHC273MTR
- Part No.:
- 74VHC273MTR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74VHC273MTR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,235
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Product details
Overview
74VHC273MTR from STMicroelectronics is an advanced high-speed CMOS octal D-type flip-flop with asynchronous clear, operating from 2V to 5.5V supply, delivering 165 MHz max clock frequency (typ. at 5V), 8 mA output drive, and 4 µA max quiescent current at 25°C - used in synchronous data latching and clock-domain interfacing in industrial control logic.
For engineers reviewing the 74VHC273MTR datasheet, 74VHC273MTR pinout, 74VHC273MTR application, or 74VHC273MTR equivalent, key selection factors include its 5.0 ns typical propagation delay (CLOCK→Q at 5V/15pF), ±2 kV ESD immunity, 0–7 V input tolerance for mixed-voltage interfacing, and guaranteed latch-up immunity across -55°C to +125°C.
Technical Context
This device implements eight edge-triggered D flip-flops sharing a common positive-edge clock and a dedicated active-low asynchronous clear. All inputs feature power-down protection enabling 0–7 V signal acceptance regardless of VCC state, supporting robust level translation between 5 V and 3 V systems.
Its C2MOS process ensures symmetrical output impedance (|IOH| = IOL ≥ 8 mA), balanced tPLH ≅ tPHL propagation delays, and low dynamic noise (VOLP ≤ 0.9 V at CL = 50 pF), critical for stable timing in multi-bit synchronous registers and address/data staging circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Clock Frequency | 165 MHz (typ. at VCC = 5 V, CL = 15 pF) - enables high-throughput data capture in fast control loops |
| Propagation Delay (CLOCK→Q) | 5.8 ns (typ. at VCC = 5 V, CL = 15 pF) - supports tight setup/hold timing margins in 100+ MHz designs |
| Supply Voltage Range | 2.0 V to 5.5 V - allows direct operation from 3.3 V or 5 V rails without level shifters |
| Output Drive Strength | ±8 mA (min.) - drives standard TTL loads and multiple CMOS inputs without buffering |
| Quiescent Supply Current | 4 µA (max. at TA = 25°C) - minimizes standby power in battery-backed or energy-sensitive systems |
| Input Voltage Tolerance | 0 V to 7 V - permits safe interfacing with overvoltage-tolerant sensors or legacy 5 V peripherals |
| ESD Immunity | 2 kV HBM - protects against handling-induced discharge during board assembly and field service |
Pinout & Package
74VHC273MTR is supplied in a 20-pin SOIC (Small Outline Integrated Circuit) package, measuring 12.6–13.0 mm × 10.0–10.65 mm (SO-20, PO13L mechanical outline), with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLEAR | Asynchronous master reset (active LOW); forces all Q outputs LOW independent of clock or D inputs |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Registered data outputs; retain state until next clock edge or CLEAR assertion |
| 3,4,7,8,13,14,17,18 | D0–D7 | Data inputs sampled on rising clock edge; tolerate 0–7 V regardless of VCC |
| 11 | CLOCK | Positive-edge triggered clock input; synchronizes all eight flip-flops simultaneously |
| 10 | GND | Ground reference (0 V) for all internal circuitry and I/O |
| 20 | VCC | Positive supply voltage (2–5.5 V); powers logic core and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Power-down input protection | Enables 0–7 V input voltage acceptance with no VCC dependency - eliminates need for external clamping diodes |
| Symmetrical output drive | |IOH| = IOL ≥ 8 mA ensures matched rise/fall times and reduced signal skew across all eight outputs |
| Balanced propagation delays | tPLH ≅ tPHL minimizes duty cycle distortion in clocked feedback paths and state machine pipelines |
| High noise immunity | VNIH = VNIL ≥ 28% VCC (min.) provides robust operation in electrically noisy industrial environments |
| Latch-up immunity | Improved process design prevents destructive latch-up under transient overvoltage or hot-swap conditions |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Latching sensor status (door open/closed, seatbelt engaged) before CAN message framing. IC Role / Device Role / Timing Role: Synchronous register holding parallel input states aligned to microcontroller's system clock edge. Use Value: Enables deterministic sampling of 8-bit status bus with sub-10 ns timing uncertainty and 125°C operational margin. | Use Scenario: Buffering switch matrix inputs (headlight, wiper, HVAC controls) prior to MCU ADC or GPIO scan. IC Role / Device Role / Timing Role: Input debouncing and metastability suppression via synchronized edge capture. Use Value: Provides 2 kV ESD-hardened interface and 0–7 V tolerant inputs compatible with 12 V automotive switches. |
| Test Equipment Digital Pattern Generator | Legacy System Bus Interface Adapter |
Use Scenario: Generating precise, skew-controlled 8-bit stimulus patterns for IC functional testing. IC Role / Device Role / Timing Role: High-speed parallel data staging element synchronized to pattern generator clock. Use Value: Delivers 165 MHz max clock rate and <1.5 ns output-to-output skew for repeatable timing validation. | Use Scenario: Bridging 5 V ISA bus data lines to 3.3 V FPGA I/O banks in retro-computing hardware upgrades. IC Role / Device Role / Timing Role: Level-translating register isolating voltage domains while preserving synchronous timing integrity. Use Value: Eliminates external level shifters using built-in 0–7 V input tolerance and rail-compatible output swing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with clear applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74VHC273PW | TSSOP-20 package; identical electrical specs but 4.4 mm × 6.5 mm footprint vs. SOIC's 13 mm × 10.6 mm | Better suited for space-constrained PCBs; thermal resistance differs due to smaller pad area | Select when board real estate is limited and reflow profile supports fine-pitch TSSOP |
| 74LCX273M | Lower VCC range (2.0–3.6 V only); higher ICC (20 µA typ.); same pinout and function | Not suitable for 5 V systems; optimized for low-voltage portable devices with tighter power budgets | Choose only for pure 3.3 V designs where 5 V tolerance is unnecessary |
Compared with SN74VHC273PW and 74LCX273M, the 74VHC273MTR uniquely combines 5 V compatibility, 0–7 V input tolerance, and SOIC manufacturability - making it optimal for industrial upgrades requiring drop-in reliability and mixed-voltage resilience.
Availability
74VHC273MTR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, test equipment digital pattern generation, and legacy system bus interface adapters requiring stable component supply across extended temperature ranges.
Supply support for 74VHC273MTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The 74VHC series targets high-speed, low-power logic applications requiring wide supply range, robust ESD performance, and interoperability with legacy 74-series footprints - especially in harsh-environment control systems.
FAQ
Is 74VHC273MTR compatible with 5 V TTL logic levels?
Yes - its VIH(min) = 0.7×VCC and VIL(max) = 0.3×VCC at 5 V ensure full compatibility with standard TTL input thresholds, and VOH/VOL specifications meet TTL output requirements under 8 mA load. It also accepts 0–7 V inputs regardless of VCC, enabling safe interconnection.
What is the minimum pulse width required on the CLEAR input?
The minimum LOW pulse width on CLEAR is 5.0 ns at VCC = 5.0 V (per AC specs). This ensures reliable asynchronous reset across the full operating temperature range (-55°C to +125°C), even under worst-case process and voltage corners.
Can 74VHC273MTR operate reliably at 2.0 V supply?
Yes - it is fully specified down to 2.0 V, with fMAX = 75 MHz (min.) and tPLH/tPHL ≤ 16.0 ns at CL = 15 pF. However, output drive drops to ±2.4 mA (min.), so load capacitance and fan-out must be derated accordingly for stable operation.
Does this device require external pull-up or pull-down resistors on unused inputs?
No - all inputs include power-down protection and internal biasing that prevents floating states. Unused inputs may be left unconnected without risk of oscillation or excessive current draw, though tying them to VCC or GND is still recommended for EMI reduction in high-noise layouts.
74VHC273MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74VHC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 7 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74VHC273MTR FAQ
1.How can I place an order for 74VHC273MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC273MTR 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 74VHC273MTR reliable?
The price and inventory of 74VHC273MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC273MTR is usually 5 days.
3.What payment methods are accepted for 74VHC273MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC273MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC273MTR?
74VHC273MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC273MTR 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 74VHC273MTR?
For technical support, including 74VHC273MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC273MTR requirements.
6.How does Aetrix verify that 74VHC273MTR is sourced from the original manufacturer or authorized distributors?
All 74VHC273MTR 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 74VHC273MTR meets industry standards.
7.What is the process for return or replacement of 74VHC273MTR?
All 74VHC273MTR units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC273MTR, 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 74VHC273MTR part is unused and in its original packaging.
Return procedure for 74VHC273MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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