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Texas Instruments 74FCT162823CTPACT
- Part No.:
- 74FCT162823CTPACT
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74FCT162823CTPACT.pdf
- Description:
- IC FF D-TYPE DUAL 9BIT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,696
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Product details
Overview
74FCT162823CTPACT from Texas Instruments is an 18-bit bus interface register with balanced 24 mA output drivers, designed for high-speed transmission-line driving in industrial systems (−40°C to +85°C). It features Ioff partial-power-down support, typical ground bounce <0.6 V at 5 V, and 6 ns max propagation delay (CLK to Q, CL = 50 pF).
For engineers reviewing the 74FCT162823CTPACT datasheet, 74FCT162823CTPACT pinout, 74FCT162823CTPACT application, or 74FCT162823CTPACT equivalent, key selection criteria include transmission-line drive capability, low ground bounce, flow-through pinout for PCB layout simplification, TSSOP-56 packaging, and compatibility with 5 V ±10% supply in noise-sensitive digital backplanes.
Technical Context
The 74FCT162823CTPACT implements dual 9-bit registers with shared control lines (CLK, CLKEN, CLR, OE) enabling 18-bit synchronized latching. Its balanced 24 mA drivers incorporate internal current-limiting resistors to minimize undershoot and eliminate need for external termination on controlled-impedance traces.
It supports partial-power-down via Ioff circuitry that disables outputs when VCC = 0 V, preventing backflow current. The device operates strictly at 5 V ±10% with TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V) and guarantees sub-0.5 ns output skew across all 18 outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - ensures compatibility with legacy 5 V logic systems and avoids level-shifting overhead. |
| Propagation Delay (CLK→Q) | 6.0 ns max (CL = 50 pF) - enables reliable operation in ≥160 MHz clock domains with timing margin. |
| Output Drive | ±24 mA balanced - provides matched sourcing/sinking for clean signal integrity on 50 Ω–75 Ω transmission lines. |
| Ground Bounce (VOLP) | <0.6 V at VCC = 5 V, TA = 25°C - reduces simultaneous switching noise in dense PCB layouts. |
| Ioff Support | 1 µA max at VCC = 0 V - allows safe hot-insertion and multi-rail power sequencing without latch-up risk. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control, test equipment, and communications infrastructure. |
| Package | TSSOP-56 (Z56, 240-mil width) - surface-mount footprint with 0.5 mm pitch, JEDEC MO-153 compliant. |
Pinout & Package
74FCT162823CTPACT is housed in a 56-pin Thin Shrunk Small Outline Package (TSSOP), designated Z56 per TI mechanical drawing DGG, with 0.5 mm lead pitch, 13.9–14.1 mm body width, and JEDEC MO-153 compliance. Pin numbering follows standard TSSOP top-view convention (Pin 1 marked by beveled corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear (Active LOW) | Resets both 9-bit register sections independently; pulse width ≥3.3 ns required for reliable assertion. |
| 1CLK, 2CLK | Clock Inputs | Edge-triggered sampling of data; requires min. 3.3 ns HIGH/LOW pulse width for valid register update. |
| 1CLKEN, 2CLKEN | Clock Enable (Active LOW) | Gates clock propagation to respective register section; setup time ≥3.0 ns relative to CLK edge. |
| 1OE, 2OE | Output Enable (Active LOW) | Controls three-state output drivers; enable/disable times ≤5.5 ns (OE→Q) and ≤6.5 ns (Q→Hi-Z) at CL = 50 pF. |
| 1D1–1D9, 2D1–2D9 | Data Inputs | 18 total CMOS/TTL-compatible inputs; VIH = 2.0 V, VIL = 0.8 V, input capacitance = 4.5 pF typical. |
| 1Q1–1Q9, 2Q1–2Q9 | Three-State Outputs | 18 balanced 24 mA drivers; VOL ≤0.55 V at 24 mA sink, VOH ≥2.4 V at 24 mA source. |
| VCC, GND | Power Rails | Dual VCC/GND pairs (Pins 24/25, 39/40, 52/53) reduce supply inductance and improve noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Balanced 24 mA output drivers | Enables direct drive of 50–75 Ω transmission lines without external series resistors or termination networks. |
| Flow-through pinout | Input-to-output signal path alignment minimizes trace length and crosstalk in high-density routing. |
| Ioff partial-power-down | Prevents damaging current backflow during board-level power sequencing or hot-swap events. |
| Typical output skew <0.5 ns | Ensures deterministic timing across all 18 outputs for synchronous bus capture in high-speed interfaces. |
| Reduced system switching noise | Achieved via internal current-limiting resistors and optimized driver rise/fall times, lowering EMI emissions. |
Applications
| Backplane Data Latching | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Latching parallel data from multiple sensor modules onto a centralized 18-bit data bus in modular automation racks. IC Role / Device Role / Timing Role: 18-bit registered buffer synchronizing asynchronous sensor reads to a master controller clock domain. Use Value: Flow-through pinout simplifies layer stacking; 6 ns propagation delay supports >100 MHz bus update rates with timing margin. | Use Scenario: Isolating and buffering digital I/O signals between field devices and programmable logic controller (PLC) CPU modules. IC Role / Device Role / Timing Role: Industrial-grade bus interface register providing noise-immune signal conditioning and hot-swap-safe Ioff protection. Use Value: −40°C to +85°C rating ensures reliability in uncontrolled cabinet environments; 24 mA drive sustains signal integrity over long ribbon cables. |
| Test Equipment Pattern Generation | Communications Line Interface |
Use Scenario: Generating precise 18-bit parallel stimulus patterns for IC functional testing in ATE systems. IC Role / Device Role / Timing Role: High-speed register capturing pattern data from FPGA sequencers and presenting it to DUT pins with minimal skew. Use Value: Sub-0.5 ns output skew guarantees simultaneous edge alignment across all 18 bits, critical for setup/hold timing validation. | Use Scenario: Driving differential line receivers (e.g., RS-422/RS-485 transceivers) from parallel microcontroller outputs in telecom baseband modules. IC Role / Device Role / Timing Role: Transmission-line optimized register buffering MCU parallel port before differential conversion stage. Use Value: Balanced 24 mA drivers match 50–75 Ω trace impedance, minimizing reflections and ensuring clean eye diagrams at 10+ Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16823CTPACT | Higher drive (64 mA sink / 32 mA source); higher ground bounce (≤1.0 V); no internal current-limiting resistors. | Better suited for heavy capacitive loads (e.g., backplanes >100 pF/inch); less optimal for controlled-impedance transmission lines. | Select CY74FCT16823CTPACT only when driving high-C loads where 74FCT162823CTPACT's 24 mA is insufficient. |
| SN74ALVTH162823GR | 3.3 V supply only; LVCMOS interface; 24 mA drive; 3.5 ns propagation delay; different pinout (64-pin VQFN). | Designed for low-voltage mixed-signal systems; incompatible with 5 V buses without level translation. | Choose SN74ALVTH162823GR only in new 3.3 V designs requiring faster timing and smaller footprint; not drop-in compatible. |
Compared with CY74FCT16823CTPACT, the 74FCT162823CTPACT trades peak drive strength for superior transmission-line fidelity and lower noise; versus SN74ALVTH162823GR, it maintains 5 V compatibility and TSSOP-56 footprint but operates at slower speed and higher voltage.
Availability
74FCT162823CTPACT is available at Aetrix Electronics and suitable for industrial PLCs, automated test equipment, telecom line cards, and high-reliability backplane interfaces requiring stable component supply and long-term lifecycle continuity.
Supply support for 74FCT162823CTPACT 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 heritage in high-reliability industrial and communications ICs.
The 74FCT162823CTPACT belongs to TI's FCT logic family-designed specifically for 5 V systems demanding low noise, high drive, and robust partial-power-down behavior in mission-critical digital infrastructure.
FAQ
What is the maximum clock frequency supported by the 74FCT162823CTPACT?
The 74FCT162823CTPACT does not specify a maximum clock frequency directly, but its 6.0 ns maximum propagation delay (CLK to Q, CL = 50 pF) and 3.3 ns minimum clock pulse width imply reliable operation up to approximately 160 MHz in well-terminated systems. System-level timing must account for setup/hold (2.0 ns SU, 1.5 ns H) and board trace delays.
Does the 74FCT162823CTPACT support hot-swap or partial-power-down operation?
Yes, the 74FCT162823CTPACT fully supports partial-power-down via its Ioff circuitry. When VCC = 0 V, output leakage is limited to 1 µA max, preventing damaging current backflow from live buses into the unpowered device-enabling safe hot-swap in modular chassis and multi-rail power systems.
What package type and dimensions does the 74FCT162823CTPACT use?
The 74FCT162823CTPACT uses a 56-pin Thin Shrunk Small Outline Package (TSSOP), TI package code Z56, mechanical drawing DGG. It measures 13.9–14.1 mm wide × 6.0–6.2 mm long × 1.2 mm max height, with 0.5 mm lead pitch and JEDEC MO-153 compliance.
How does the 74FCT162823CTPACT differ from the CY74FCT16823CTPACT?
The 74FCT162823CTPACT features balanced 24 mA output drivers with internal current-limiting resistors for transmission-line driving and lower ground bounce (<0.6 V), while the CY74FCT16823CTPACT offers higher 64 mA sink/32 mA source drive optimized for heavy capacitive loads and exhibits higher ground bounce (≤1.0 V).
Is the 74FCT162823CTPACT RoHS-compliant and lead-free?
Yes, the 74FCT162823CTPACT is RoHS-compliant and green (Pb-free, no Sb/Br flame retardants), with CU NIPDAU lead finish and Moisture Sensitivity Level (MSL) 1 (260°C peak reflow, unlimited floor life), per TI's official packaging documentation.
74FCT162823CTPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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:
- 56-TSSOP
74FCT162823CTPACT FAQ
1.How can I place an order for 74FCT162823CTPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT162823CTPACT 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 74FCT162823CTPACT reliable?
The price and inventory of 74FCT162823CTPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162823CTPACT is usually 5 days.
3.What payment methods are accepted for 74FCT162823CTPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162823CTPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT162823CTPACT?
74FCT162823CTPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT162823CTPACT 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 74FCT162823CTPACT?
For technical support, including 74FCT162823CTPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162823CTPACT requirements.
6.How does Aetrix verify that 74FCT162823CTPACT is sourced from the original manufacturer or authorized distributors?
All 74FCT162823CTPACT 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 74FCT162823CTPACT meets industry standards.
7.What is the process for return or replacement of 74FCT162823CTPACT?
All 74FCT162823CTPACT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162823CTPACT, 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 74FCT162823CTPACT part is unused and in its original packaging.
Return procedure for 74FCT162823CTPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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