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Texas Instruments 74FCT162374ATPACT
- Part No.:
- 74FCT162374ATPACT
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74FCT162374ATPACT.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:155
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Product details
Overview
74FCT162374ATPACT from Texas Instruments is a 16-bit edge-triggered D-type register with dual 8-bit register capability, 24 mA balanced output drivers, 6.5 ns max propagation delay (CLK to O), and Ioff partial-power-down support. It operates at 5V ±10% over −40°C to +85°C and is used in high-speed bus buffering and transmission-line driving applications.
For engineers reviewing the 74FCT162374ATPACT datasheet, 74FCT162374ATPACT pinout, 74FCT162374ATPACT application, or 74FCT162374ATPACT equivalent, key selection criteria include its 24 mA balanced drive strength, <0.6 V typical ground bounce (VOLP), flow-through pinout for PCB layout simplification, and TSSOP-48 package compatibility with high-density routing.
Technical Context
The 74FCT162374ATPACT implements two independent 8-bit registers or one unified 16-bit register via shared CLK and OE inputs. Its edge-rate controlled outputs and integrated current-limiting resistors minimize switching noise and eliminate need for external termination on transmission lines.
Designed for industrial bus interfaces, it features Ioff circuitry that disables outputs during power-down to prevent backflow current, and supports TTL-level inputs with hysteresis (100 mV) for noise immunity in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC | 5 V ±10% - fixed single-supply operation compatible with legacy 5V TTL/CMOS systems |
| Propagation Delay | 6.5 ns max (CLK to O) - enables reliable timing in 150+ MHz bus clock domains |
| Output Drive | ±24 mA - balanced sourcing/sinking reduces ground bounce and improves signal integrity on stubbed lines |
| Ground Bounce (VOLP) | <0.6 V typical at VCC = 5 V, TA = 25°C - minimizes logic errors during simultaneous switching |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Ioff Support | Yes - prevents damaging current backflow when powered down, enabling hot-swap and partial-power-down system architectures |
| Package | TSSOP-48 (DGG), 240-mil pitch - compact footprint with 1.2 mm max height for space-constrained PCBs |
Pinout & Package
48-pin Thin Shrunk Small Outline Package (TSSOP), JEDEC MO-153 compliant, body size 12.5 × 6.1 mm, 1.2 mm max height, gull-wing leads, RoHS-compliant Cu/Ni/PdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 17–24, 25–32, 41–48 | Data Inputs (D1–D8, D1–D8) | Two independent 8-bit parallel data buses accepting TTL/CMOS-compatible logic levels |
| 9, 26 | Clock Inputs (1CLK, 2CLK) | Positive-edge-triggered clocks controlling latching of respective 8-bit data groups |
| 10, 27 | Output Enable (1OE, 2OE) | Active-low three-state control per 8-bit bank - enables independent bus isolation |
| 11–16, 33–38 | Outputs (1O1–1O6, 2O1–2O6) | Three-state CMOS outputs with 24 mA drive and current-limiting resistors for transmission-line matching |
| 19, 20, 39, 40 | GND | Dedicated ground pins per functional block reduce ground bounce and improve noise immunity |
| 21, 22, 41, 42 | VCC | Decoupled power supply pins per register bank ensure stable voltage under dynamic load |
Key Features
| Feature | Design Value |
|---|---|
| Balanced 24 mA output drivers | Enables matched rise/fall times and low undershoot on 50 Ω transmission lines without external termination |
| Ioff partial-power-down support | Prevents backflow current when VCC = 0 V, allowing safe insertion/removal in live backplanes |
| Flow-through pinout | Input-to-output signal path alignment simplifies layer stacking and reduces trace crossovers on 4-layer PCBs |
| Edge-rate control circuitry | Reduces EMI emissions by limiting dV/dt, meeting Class B FCC radiated emission requirements without shielding |
| Industrial temperature range | Validated operation from −40°C to +85°C ensures reliability in factory automation and outdoor telecom enclosures |
Applications
| Backplane Bus Buffering | High-Speed Data Acquisition Interface |
|---|---|
Use Scenario: Isolating and regenerating parallel address/data buses between CPU and peripheral modules in modular industrial PLC chassis. IC Role / Device Role / Timing Role: 16-bit registered buffer synchronizing asynchronous bus transfers with precise clock edge alignment and output enable gating. Use Value: Eliminates timing skew across 16 signals, supports >100 MHz sustained bus throughput, and enables hot-swap of I/O modules via Ioff protection. | Use Scenario: Interfacing 16-bit ADC outputs to FPGA-based digital signal processors in real-time spectrum analyzers. IC Role / Device Role / Timing Role: Edge-aligned capture register holding sampled data until FPGA read cycle, with three-state outputs preventing bus contention. Use Value: 6.5 ns propagation delay ensures setup/hold compliance at 100 MSPS sampling rates; 24 mA drive maintains signal integrity over 10 cm FR4 traces. |
| Transmission-Line Driver | Legacy System Bus Extender |
Use Scenario: Driving unterminated 50 Ω coaxial or microstrip traces between adjacent PCBs in test instrumentation racks. IC Role / Device Role / Timing Role: Low-noise, impedance-matched driver using internal current-limiting resistors to suppress reflections and ringing. Use Value: <0.6 V ground bounce and edge-rate control reduce jitter on sampled waveforms; eliminates need for 32 discrete 50 Ω resistors per board. | Use Scenario: Extending 16-bit ISA or VMEbus segments across multiple slots with signal integrity preservation. IC Role / Device Role / Timing Role: Registered repeater providing fanout, level translation, and noise filtering for legacy 5V parallel buses. Use Value: TTL-compatible inputs accept legacy controller outputs; flow-through pinout allows direct trace routing without vias; industrial temp rating supports rack-mounted deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit registered buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162374CTPACT | 5.2 ns max propagation delay vs. 6.5 ns; identical pinout, drive strength, and Ioff support | Suitable where tighter timing margins are required in high-frequency bus designs | Select when system clock period demands sub-7 ns register-to-register latency |
| 74FCT162374ATPVCT | Same speed grade (6.5 ns) and electrical specs, but SSOP-48 (300-mil pitch) instead of TSSOP-48 (240-mil) | Better suited for manual assembly or legacy reflow profiles due to wider lead spacing | Choose for lower assembly cost in low-volume production or when TSSOP rework capability is limited |
Compared with CY74FCT162374CTPACT, the 74FCT162374ATPACT trades 1.3 ns of speed for broader availability and mature qualification; versus 74FCT162374ATPVCT, it offers 20% smaller PCB area and improved high-frequency signal integrity at the cost of tighter placement tolerance.
Availability
74FCT162374ATPACT is available at Aetrix Electronics and suitable for industrial backplane buffering, high-speed data acquisition interfaces, transmission-line driving, and legacy bus extension requiring stable component supply and long-term lifecycle support.
Supply support for 74FCT162374ATPACT 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 industrial-grade product validation.
The FCT logic family-including the 74FCT162374ATPACT-is engineered for high-speed, low-noise 5V bus interfacing in industrial automation, test equipment, and communications infrastructure.
FAQ
What is the maximum clock frequency supported by the 74FCT162374ATPACT?
The 74FCT162374ATPACT has a minimum clock pulse width of 5.0 ns (HIGH or LOW), supporting guaranteed operation up to 100 MHz. At 25°C and nominal VCC, typical performance exceeds this-designers commonly achieve stable 125 MHz operation with proper layout and decoupling. The 6.5 ns max propagation delay ensures timing closure in synchronous bus designs with ≥7 ns setup windows.
Does the 74FCT162374ATPACT support mixed-voltage interfacing?
No-the 74FCT162374ATPACT is a 5V-only device with VCC specified at 5V ±10%. Its inputs are TTL-compatible (VIH = 2.0 V min, VIL = 0.8 V max) but not designed for 3.3V or 2.5V logic families. Direct connection to lower-voltage devices requires level-shifting circuitry to avoid overstress or incorrect logic interpretation.
How does the Ioff feature function in the 74FCT162374ATPACT?
The Ioff circuitry in the 74FCT162374ATPACT disables all outputs when VCC = 0 V, limiting leakage current to ±1 µA even if input/output pins are driven externally. This prevents damaging backflow current during partial power-down or hot-swap events-critical for modular backplane systems where boards may be inserted while other slots remain powered.
Can the 74FCT162374ATPACT be used as two independent 8-bit registers?
Yes-the 74FCT162374ATPACT contains two fully independent 8-bit register banks (Bank 1: Pins 1–8, 9, 10, 11–16; Bank 2: Pins 17–24, 26, 27, 33–38), each with dedicated CLK and OE inputs. Connecting 1CLK/2CLK and 1OE/2OE together configures it as a single 16-bit register; keeping them separate enables concurrent latching of two 8-bit data streams.
What is the thermal resistance (θJA) of the 74FCT162374ATPACT in TSSOP-48 package?
Texas Instruments does not publish θJA for the 74FCT162374ATPACT in datasheet SCCS055C. However, based on JEDEC MO-153 TSSOP-48 thermal characterization (DGG package), typical θJA is 110°C/W on 1-in² 2-layer board with 2 oz copper. For thermal design, assume worst-case power dissipation of 500 µA × 5.5 V = 2.75 mW quiescent + dynamic contributions-no heatsink required in standard industrial airflow.
74FCT162374ATPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 500 µA
- Input Capacitance:
- 4.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74FCT162374ATPACT FAQ
1.How can I place an order for 74FCT162374ATPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT162374ATPACT 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 74FCT162374ATPACT reliable?
The price and inventory of 74FCT162374ATPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162374ATPACT is usually 5 days.
3.What payment methods are accepted for 74FCT162374ATPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162374ATPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT162374ATPACT?
74FCT162374ATPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT162374ATPACT 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 74FCT162374ATPACT?
For technical support, including 74FCT162374ATPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162374ATPACT requirements.
6.How does Aetrix verify that 74FCT162374ATPACT is sourced from the original manufacturer or authorized distributors?
All 74FCT162374ATPACT 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 74FCT162374ATPACT meets industry standards.
7.What is the process for return or replacement of 74FCT162374ATPACT?
All 74FCT162374ATPACT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162374ATPACT, 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 74FCT162374ATPACT part is unused and in its original packaging.
Return procedure for 74FCT162374ATPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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