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Texas Instruments 74FCT16823CTPVCG4
- Part No.:
- 74FCT16823CTPVCG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74FCT16823CTPVCG4.pdf
- Description:
- IC FF D-TYPE DUAL 9BIT 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,515
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Product details
Overview
74FCT16823CTPVCG4 from Texas Instruments is an 18-bit bus interface register IC with dual 9-bit sections, designed for high-speed, low-power systems requiring wide data path registration and parity support. It features 5V ±10% supply operation, industrial temperature range (−40°C to +85°C), 64 mA sink / 32 mA source drive capability, typical output skew < 250 ps, and Ioff partial-power-down support. It is used in backplane-driven computing and telecom infrastructure where noise immunity and timing integrity are critical.
For engineers reviewing the 74FCT16823CTPVCG4 datasheet, 74FCT16823CTPVCG4 pinout, 74FCT16823CTPVCG4 application, or 74FCT16823CTPVCG4 equivalent, key selection criteria include its 6.0 ns max CLK-to-Q propagation delay at CL = 50 pF, balanced 24 mA output drivers (per CY74FCT162823T variant), TSSOP/SSOP flow-through pinout, and compatibility with 5V TTL-level control logic in high-capacitance load environments.
Technical Context
The 74FCT16823CTPVCG4 implements two synchronized 9-bit register sections sharing common clock enable (CLKEN), asynchronous clear (CLR), and output enable (OE) controls - enabling 18-bit parallel data latching with single-cycle coordination. Its edge-rate control circuitry suppresses switching noise, and Ioff protection disables outputs during power-down to prevent current backflow.
It operates exclusively at VCC = 5V ±10% with CMOS-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), supports TTL-driven inputs (ΔICC = 0.5–1.5 mA per HIGH input), and delivers guaranteed VOL ≤ 0.55 V at 64 mA sink load - making it suitable for driving terminated transmission lines and high-fanout backplanes without external termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - ensures compatibility with legacy 5V TTL/CMOS system rails and eliminates need for level translation. |
| Propagation Delay (CLK→Q) | Max 6.0 ns at CL = 50 pF - enables reliable operation in ≥100 MHz clock domains with margin for setup/hold timing. |
| Output Drive | 64 mA sink / 32 mA source - sufficient to directly drive 50 Ω transmission lines or 10+ TTL loads without buffers. |
| Output Skew | <250 ps typical - maintains signal alignment across all 18 outputs, critical for parallel bus timing integrity. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control, base station, and network equipment deployment. |
| Ioff Support | Active at VCC = 0 V - prevents damaging back-current during hot-swap or partial system power-down sequences. |
| ESD Rating | >2000 V HBM - provides robust handling tolerance during board assembly and field service operations. |
Pinout & Package
74FCT16823CTPVCG4 is housed in a 56-lead SSOP (Shrink Small Outline Package) with 25-mil pitch (O56 package drawing), 13.9 mm × 7.9 mm body size, and 1.2 mm max height. The flow-through pinout minimizes trace crossovers and simplifies PCB routing for 18-bit parallel buses.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear (Active LOW) | Resets all 18 Q outputs to LOW independently of clock; pulse width ≥3.3 ns required. |
| 1CLK, 2CLK | Clock Inputs | Edge-triggered sampling of D inputs; min pulse width 3.3 ns HIGH/LOW ensures reliable register capture. |
| 1CLKEN, 2CLKEN | Clock Enable (Active LOW) | Gates clock propagation - allows dynamic clock gating without toggling internal registers. |
| 1OE, 2OE | Output Enable (Active LOW) | Places corresponding 9-bit Q outputs in high-impedance state; enables bus sharing and hot-swap isolation. |
| 1D1–1D9, 2D1–2D9 | Data Inputs | Parallel 18-bit data path; accepts TTL/CMOS logic levels; VIH ≥2.0 V, VIL ≤0.8 V. |
| 1Q1–1Q9, 2Q1–2Q9 | Three-State Outputs | 18-bit registered outputs with 64 mA sink capability; VOL ≤0.55 V at full load ensures noise margin. |
| VCC, GND | Power & Ground | Dual VCC/GND pairs (pins 24/25, 47/48) reduce switching noise and improve PSRR in high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) and ground bounce (VOLP <1.0 V), enabling clean signal integrity on dense PCBs. |
| Ioff partial-power-down | Disables outputs when VCC = 0 V, preventing reverse current flow during board hot-plug or subsystem sleep modes. |
| Balanced 24 mA drivers | Minimizes undershoot and eliminates need for external series termination resistors on controlled-impedance traces. |
| Flow-through pinout | Input pins on one side, outputs on opposite side - simplifies layer stack routing and reduces vias in 18-bit bus layouts. |
| Industrial temperature grade | Validated operation from −40°C to +85°C ensures reliability in uncontrolled environments like telecom cabinets and factory controllers. |
Applications
| Backplane Data Registration | Telecom Line Card Interface |
|---|---|
|
Use Scenario: Latching parallel address/data signals between processor and peripheral modules across multi-slot backplanes. IC Role / Device Role / Timing Role: 18-bit synchronous register providing setup/hold margin and noise-immune data capture at 50–100 MHz clock rates. Use Value: 6.0 ns propagation delay and <250 ps output skew ensure deterministic timing across all 18 bits, eliminating bus skew-induced metastability. |
Use Scenario: Buffering and synchronizing control/status signals between FPGA-based line interface units and analog front-end ASICs. IC Role / Device Role / Timing Role: Level-shifting and fanout-expanding register with Ioff support for safe hot-swap insertion into live chassis. Use Value: Ioff protection and 2000 V ESD rating allow safe field replacement without powering down entire line card or adjacent slots. |
| Industrial PLC I/O Expansion | Legacy Bus Bridge Interface |
|
Use Scenario: Isolating and registering digital I/O signals from sensor arrays or actuator banks in programmable logic controller racks. IC Role / Device Role / Timing Role: High-drive 18-bit latch interfacing microcontroller GPIOs to noisy industrial wiring harnesses. Use Value: 64 mA sink capability drives LED indicators or optocoupler inputs directly; edge-rate control suppresses EMI coupling into adjacent analog channels. |
Use Scenario: Adapting 16-bit ISA or VMEbus data paths to modern 5V microcontroller peripherals in retro-computing or test instrumentation. IC Role / Device Role / Timing Role: Wide-bus register aligning legacy bus timing with faster CPU clock domains while preserving signal integrity. Use Value: Flow-through pinout and 5V TTL compatibility eliminate level translators; 56-pin SSOP footprint matches standard bus connector pitch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit bus interface register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162823CTPVC | Same 56-pin SSOP package and 6.0 ns speed grade, but uses balanced 24 mA drivers (vs. 64/32 mA in 74FCT16823CTPVCG4) and lower ground bounce (VOLP <0.6 V). | Better suited for transmission-line driving with minimal overshoot; less ideal for high-fanout TTL loads requiring >32 mA sourcing. | Select CY74FCT162823CTPVC when driving controlled-impedance traces; retain 74FCT16823CTPVCG4 for direct TTL fanout or backplane loading. |
| 74FCT16823ATPACT | TSSOP-56 package (Z56), same pinout, but slower 10.0 ns max CLK-to-Q delay and higher 10 ns minimum clock pulse width. | Acceptable for ≤50 MHz systems where board space is constrained; not suitable for timing-critical 100 MHz backplane interfaces. | Choose 74FCT16823ATPACT only if TSSOP footprint is mandatory and timing budget allows ≥10 ns propagation latency. |
Compared with CY74FCT162823CTPVC and 74FCT16823ATPACT, the 74FCT16823CTPVCG4 offers superior drive strength for legacy TTL loads and tighter timing margins than the AT-speed variant - making it the preferred choice for noise-sensitive, high-fanout 5V industrial bus applications where both performance and robustness are required.
Availability
74FCT16823CTPVCG4 is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and legacy bus interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74FCT16823CTPVCG4 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 over 90 years of innovation in high-reliability industrial and automotive electronics.
The 74FCT16823CTPVCG4 belongs to TI's FCT logic family - engineered for 5V systems demanding low power, high noise immunity, and precise timing in mission-critical industrial and communications equipment.
FAQ
What is the maximum clock frequency supported by the 74FCT16823CTPVCG4?
The 74FCT16823CTPVCG4 does not specify a maximum clock frequency directly, but its 6.0 ns maximum CLK-to-Q propagation delay and 3.3 ns minimum clock pulse width imply reliable operation up to approximately 100 MHz in well-designed PCB layouts with controlled trace impedance and proper decoupling. System-level timing must account for setup/hold requirements (tSU = 2.0 ns, tH = 1.5 ns) and board-level signal integrity.
Does the 74FCT16823CTPVCG4 support mixed-voltage operation (e.g., 3.3V inputs with 5V VCC)?
No - the 74FCT16823CTPVCG4 is a 5V-only device. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) are compatible with 3.3V logic HIGH levels, but TI's datasheet specifies operation only with VCC = 5V ±10%. Applying 3.3V inputs is permissible only if they meet the VIH/VIL specs; however, the device itself must be powered at 5V to guarantee output drive, timing, and Ioff functionality.
Can the 74FCT16823CTPVCG4 be used in hot-swap applications?
Yes - the 74FCT16823CTPVCG4 includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow during live insertion or removal. This feature, combined with its 2000 V HBM ESD rating and industrial temperature range, makes it suitable for hot-swap line cards and modular backplane systems where subsystems may be powered independently.
What is the purpose of the CLKEN pin on the 74FCT16823CTPVCG4?
The CLKEN (Clock Enable) pin on the 74FCT16823CTPVCG4 is an active-LOW control that gates the clock signal path to the internal registers. When CLKEN is HIGH, the clock is blocked and no new data is latched, even if CLK toggles - allowing dynamic clock suspension without altering register contents or consuming unnecessary switching power.
Is the 74FCT16823CTPVCG4 pin-compatible with other members of the CY74FCT16823 family?
Yes - the 74FCT16823CTPVCG4 shares identical 56-pin SSOP (O56) pinout and function mapping with CY74FCT16823CTPVC and CY74FCT16823CTPVCT. All variants use the same pin configuration for D, Q, CLK, CLKEN, CLR, OE, VCC, and GND, enabling drop-in replacement within the same speed grade and package type without PCB redesign.
74FCT16823CTPVCG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 9
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- 6ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- 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:
- 56-SSOP
74FCT16823CTPVCG4 FAQ
1.How can I place an order for 74FCT16823CTPVCG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT16823CTPVCG4 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 74FCT16823CTPVCG4 reliable?
The price and inventory of 74FCT16823CTPVCG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT16823CTPVCG4 is usually 5 days.
3.What payment methods are accepted for 74FCT16823CTPVCG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT16823CTPVCG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT16823CTPVCG4?
74FCT16823CTPVCG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT16823CTPVCG4 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 74FCT16823CTPVCG4?
For technical support, including 74FCT16823CTPVCG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT16823CTPVCG4 requirements.
6.How does Aetrix verify that 74FCT16823CTPVCG4 is sourced from the original manufacturer or authorized distributors?
All 74FCT16823CTPVCG4 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 74FCT16823CTPVCG4 meets industry standards.
7.What is the process for return or replacement of 74FCT16823CTPVCG4?
All 74FCT16823CTPVCG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT16823CTPVCG4, 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 74FCT16823CTPVCG4 part is unused and in its original packaging.
Return procedure for 74FCT16823CTPVCG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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