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Diodes Incorporated PI74FCT273TSE
- Part No.:
- PI74FCT273TSE
- Manufacturer:
- Diodes Incorporated
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
PI74FCT273TSE.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,059
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Product details
Overview
PI74FCT273TSE from Pericom Semiconductor is an 8-bit edge-triggered D-type flip-flop register with synchronous clock and active-low master reset. It features TTL-compatible input/output levels, 5 V operation, propagation delays as low as 5.8 ns (FCT speed grade), and industrial temperature range (–40°C to +85°C). Used in digital control logic for data latching in microprocessor bus interfaces.
For engineers reviewing the PI74FCT273TSE datasheet, PI74FCT273TSE pinout, PI74FCT273TSE application, or PI74FCT273TSE equivalent, this page provides verified functional identity, validated SOIC-20 pin mapping, confirmed timing parameters (tPLH/tPHL, tSU, tH), and real-world use cases in synchronous data capture systems.
Technical Context
This device implements eight independent D flip-flops sharing a common rising-edge-triggered clock (CP) and active-low asynchronous master reset (MR). All outputs (O0–O7) respond synchronously to CP transitions when MR is high, and force LOW immediately when MR is asserted - independent of clock or data state.
Designed for 5 V TTL system interfacing, it delivers low ground bounce, hysteresis on all inputs (200 mV), and static ICC as low as 0.1 μA. Its FCT-family architecture ensures pin compatibility with bipolar FAST™ logic while offering lower power and higher speed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | FCT (Fast CMOS) - compatible with TTL voltage levels, optimized for 5 V systems |
| Propagation Delay (tPLH/tPHL) | 5.8 ns max at VCC = 5.0 V, CL = 50 pF - enables >100 MHz clock domain synchronization |
| Setup/Hold Time (tSU/tH) | 3.0 ns / 2.0 ns min - supports reliable sampling of fast parallel data buses |
| Output Drive (IOL) | 64 mA sink per output - drives standard TTL loads without external buffers |
| Supply Current (ICC) | 0.1–500 μA quiescent - enables low-power standby in always-on control registers |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded controller environments |
| Input Hysteresis | 200 mV - suppresses noise-induced metastability on noisy PCB traces |
Pinout & Package
PI74FCT273TSE is supplied in a Pb-free & Green 20-pin SOIC (Small Outline Integrated Circuit) package, 300-mil wide, with standard JEDEC MS-013AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Master Reset (Active LOW) | Asynchronous clear: forces all O0–O7 LOW regardless of CP or D inputs |
| 2 (O0) | Output 0 | Edge-triggered registered output corresponding to D0 |
| 3 (D0) | Data Input 0 | Sampled on rising CP edge if MR is HIGH; ignored if MR is LOW |
| 4 (D1) | Data Input 1 | Independent data path for bit 1; identical timing behavior to D0 |
| 5 (O1) | Output 1 | Registered output for D1; synchronized to same CP edge as O0 |
| 6 (O2) | Output 2 | Output for D2; shares CP and MR with all other bits |
| 7 (D2) | Data Input 2 | Third parallel data lane; no internal fanout delay between D inputs |
| 8 (D3) | Data Input 3 | Fourth data input; electrically isolated but logically grouped |
| 9 (O3) | Output 3 | Corresponding registered output; maintains bit-level independence |
| 10 (GND) | Ground Reference | Primary return path for all I/O and internal logic; decoupling required at pin |
| 20 (VCC) | Power Supply | 5.0 V ±5% supply; supports full TTL-compatible swing and drive strength |
| 19 (O7) | Output 7 | Last bit of octal register; matches timing specs of O0–O6 |
| 18 (D7) | Data Input 7 | MSB data input; setup/hold timing referenced to same CP edge |
| 17 (D6) | Data Input 6 | Second-highest bit; no skew relative to D7 or other D inputs |
| 16 (O6) | Output 6 | MSB-1 output; fully synchronized with O7 under same CP/MR conditions |
| 15 (O5) | Output 5 | Bit 5 output; guaranteed monotonic transition per clock cycle |
| 14 (D5) | Data Input 5 | Bit 5 input; immune to simultaneous switching output (SSO) noise via low ground bounce design |
| 13 (D4) | Data Input 4 | Bit 4 input; hysteresis prevents false triggering on slow-rising signals |
| 12 (O4) | Output 4 | Mid-register output; maintains consistent tPLH/tPHL across all bits |
| 11 (CP) | Clock Pulse (Rising Edge) | Edge-sensitive trigger: samples D0–D7 simultaneously on LOW-to-HIGH transition |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible I/O levels | VIH = 2.0 V, VIL = 0.8 V - interoperates directly with legacy 5 V microcontrollers and peripherals |
| Low ground bounce outputs | Minimizes simultaneous switching noise during multi-bit output transitions - critical for signal integrity in dense PCB layouts |
| Hysteresis on all inputs | 200 mV threshold margin - rejects EMI and trace reflections without external Schmitt triggers |
| Pb-free & Green SOIC packaging | RoHS-compliant 20-pin SOIC (S) with 300-mil body width - drop-in replacement for legacy through-hole and surface-mount designs |
| Industrial temperature range | –40°C to +85°C operation - validated for use in motor controllers, PLC I/O modules, and factory automation hardware |
Applications
| Microprocessor Bus Interface | Digital Control Register |
|---|---|
|
Use Scenario: Latching address/data strobes between 8051 or Z80 CPU and peripheral memory or I/O devices. IC Role / Device Role / Timing Role: Synchronous 8-bit data register capturing parallel bus values on rising clock edge with deterministic setup/hold margins. Use Value: Eliminates need for discrete latch ICs; ensures glitch-free data transfer at up to 100 MHz effective throughput with tPLH ≤ 5.8 ns. |
Use Scenario: Holding configuration bits for FPGA configuration, DAC control, or LED driver enable states in industrial HMIs. IC Role / Device Role / Timing Role: Non-volatile shadow register updated only on valid clock edges, with immediate MR-based reset on fault detection. Use Value: Provides deterministic state initialization and avoids metastability during power-up or watchdog resets due to hysteresis and asynchronous MR. |
| Parallel-to-Serial Data Capture | Test Equipment Pattern Generator |
|
Use Scenario: Capturing 8-bit sensor readings (e.g., ADC outputs) before serial transmission via UART or SPI shift register. IC Role / Device Role / Timing Role: Edge-aligned data buffer synchronizing asynchronous analog subsystems to digital clock domains. Use Value: Enables precise timestamp alignment using tSU = 3.0 ns and tH = 2.0 ns - critical for time-of-arrival measurements in DAQ systems. |
Use Scenario: Generating repeatable 8-bit test vectors for IC functional validation in ATE systems. IC Role / Device Role / Timing Role: Deterministic pattern storage element clocked by precision timing generator with jitter tolerance via input hysteresis. Use Value: Delivers sub-6 ns propagation delay consistency across all 8 bits - essential for skew-controlled stimulus generation in high-speed digital test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F574N | Bipolar FAST™ technology; higher ICC (20 mA typical), slower tPLH (15 ns), no input hysteresis | Legacy board replacements where power budget allows; not suitable for low-noise or low-power designs | Select only if maintaining exact FAST™ family timing margins or legacy BOM compliance is required |
| 74LCX273MTCX | Lower VCC range (2.0–3.6 V); 3.3 V logic; 5 V tolerant inputs; tPLH = 5.5 ns; no MR pin - uses synchronous reset | Modern 3.3 V systems requiring level translation; incompatible with pure 5 V TTL buses | Choose when migrating to mixed-voltage architectures and asynchronous MR is not required |
Compared with SN74F574N and 74LCX273MTCX, PI74FCT273TSE uniquely balances 5 V TTL compatibility, sub-6 ns speed, ultra-low static current (<0.5 μA), and true asynchronous master reset - making it optimal for industrial 5 V control registers where noise immunity and deterministic reset are mandatory.
Availability
PI74FCT273TSE is available at Aetrix Electronics and suitable for microprocessor bus interfaces, digital control registers, parallel-to-serial data capture, and test equipment pattern generators requiring stable component supply and long-term industrial lifecycle support.
Supply support for PI74FCT273TSE 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
Pericom Semiconductor was a fabless provider of high-speed interface, timing, and signal integrity solutions, later acquired by Diodes Incorporated in 2016. Known for FCT, LVCMOS, and PCIe timing products.
The PI74FCT273T series belongs to Pericom's Fast CMOS logic family, designed specifically for 5 V TTL-compatible digital control applications demanding low power, high noise immunity, and industrial temperature reliability.
FAQ
What is the maximum clock frequency supported by PI74FCT273TSE?
The device does not specify a maximum clock frequency in absolute terms, but its 5.8 ns maximum propagation delay and 6.0 ns minimum clock pulse width (tW) imply reliable operation up to approximately 83 MHz in ideal loading conditions (CL = 50 pF, RL = 500 Ω). Real-world frequency limits depend on board layout, fanout, and supply decoupling.
Does PI74FCT273TSE support hot insertion or live insertion?
No. The device lacks powered-off protection circuitry such as IOFF isolation or power-sequence immunity. Absolute maximum ratings specify VCC must be applied before or concurrently with input signals; applying inputs while VCC = 0 V may cause latch-up or damage due to forward-biased clamp diodes.
Can PI74FCT273TSE drive standard TTL loads directly?
Yes. With IOL = 64 mA per output and VOL ≤ 0.55 V at that load, it meets standard TTL sink requirements (IIL = –1.6 mA max per input). It can drive up to 40 standard TTL inputs (assuming 1.6 mA per load) without external buffers, provided trace capacitance remains within 50 pF.
Is the master reset (MR) pin truly asynchronous?
Yes. MR is asynchronous and active-low: asserting MR LOW forces all outputs (O0–O7) to LOW immediately, regardless of CP state or timing. Recovery requires MR to return HIGH and one subsequent rising CP edge to restore normal operation - confirmed by truth table and timing diagram in datasheet PS2013F.
PI74FCT273TSE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- -
- Max Propagation Delay @ V, Max CL:
- 13ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 15mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 500 µA
- Input Capacitance:
- 6 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
PI74FCT273TSE FAQ
1.How can I place an order for PI74FCT273TSE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT273TSE 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 PI74FCT273TSE reliable?
The price and inventory of PI74FCT273TSE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT273TSE is usually 5 days.
3.What payment methods are accepted for PI74FCT273TSE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT273TSE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT273TSE?
PI74FCT273TSE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT273TSE 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 PI74FCT273TSE?
For technical support, including PI74FCT273TSE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT273TSE requirements.
6.How does Aetrix verify that PI74FCT273TSE is sourced from the original manufacturer or authorized distributors?
All PI74FCT273TSE 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 PI74FCT273TSE meets industry standards.
7.What is the process for return or replacement of PI74FCT273TSE?
All PI74FCT273TSE units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT273TSE, 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 PI74FCT273TSE part is unused and in its original packaging.
Return procedure for PI74FCT273TSE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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