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Texas Instruments CY74FCT163827CPACT
- Part No.:
- CY74FCT163827CPACT
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
CY74FCT163827CPACT.pdf
- Description:
- BUS DRIVER, FCT SERIES
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Inventory:82,000
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Product details
Overview
CY74FCT163827CPACT from Texas Instruments is a 20-bit CMOS buffer/line driver with dual 10-bit sections, 5V-tolerant I/O, 24 mA/6 mA balanced drive, 4.1 ns propagation delay (FCT-C speed), and power-off disable for live insertion in mixed-voltage bus systems.
For engineers reviewing the CY74FCT163827CPACT datasheet, CY74FCT163827CPACT pinout, CY74FCT163827CPACT application, or CY74FCT163827CPACT equivalent, this device serves as a low-power, high-noise-immunity replacement for LCX/LPT families in wide data/address path buffering where voltage translation, ground-bounce control, and output skew <250 ps are critical.
Technical Context
The CY74FCT163827CPACT implements two independent 10-bit buffers, each with NANDed active-low OE inputs enabling flexible enable logic. Its outputs feature integrated current-limiting resistors to reduce external termination needs and suppress undershoot.
Designed for 2.7V–3.6V VCC operation, it accepts 5V-tolerant inputs and delivers 5V-compatible outputs-enabling direct interfacing between 3.3V logic and legacy 5V buses without level shifters. Power-off disable ensures high-impedance outputs when VCC = 0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 3.6V - Operates within standard 3.3V supply tolerance, compatible with industrial 3.3V rail designs. |
| Propagation Delay (tPLH/tPHL) | Max 4.1 ns at VCC = 3.0–3.6V - Enables high-speed bus buffering up to ~240 MHz clock-equivalent data rates. |
| Output Drive | 24 mA sink / 6 mA source - Balanced asymmetrical drive reduces simultaneous switching noise while maintaining signal integrity on stub-loaded buses. |
| Input Voltage Tolerance | –0.5V to +7.0V - Supports 5V-tolerant operation without clamping diodes or external protection in mixed-voltage systems. |
| Output Skew | Typical <250 ps - Ensures tight timing alignment across all 20 outputs, critical for parallel bus hold-time compliance. |
| Power-Off Disable | IOFF ≤ ±100 µA at VCC = 0V - Permits hot-plug insertion into powered backplanes without bus contention or damage. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial ambient environments without derating. |
Pinout & Package
56-pin Thin Shrunk Small Outline Package (TSSOP), Z56 drawing, 0.25 mm pitch (19.6-mil), JEDEC MO-153 compliant, body size 13.9 × 6.0 × 1.2 mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Active-Low Output Enable Inputs | NANDed pair per 10-bit section enables flexible gating logic; all four must be LOW to enable corresponding Y outputs. |
| 1A1–1A10, 2A1–2A10 | Data Inputs | 20 TTL/CMOS-compatible inputs accepting 5V signals; internally terminated to reduce reflections on unterminated lines. |
| 1Y1–1Y10, 2Y1–2Y10 | Three-State Outputs | 20 buffered outputs with current-limiting resistors; drive 24 mA sink / 6 mA source; enter high-Z when any OE is HIGH. |
| VCC (Pins 25, 36, 47) | Power Supply | Three dedicated VCC pins minimize IR drop and supply noise across wide package; decoupling required at each pin. |
| GND (Pins 11, 23, 34, 45, 56) | Ground | Five GND pins provide low-inductance return paths, critical for controlling ground bounce (Volp) in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate control circuitry | Reduces EMI and overshoot by limiting dV/dt on outputs without external RC networks. |
| 5V-tolerant I/O | Enables seamless integration between 3.3V FCT logic and legacy 5V address/data buses without translators. |
| 24 mA / 6 mA balanced drive | Optimizes noise vs. drive strength trade-off: strong sink capability for pull-down dominance, moderate source for reduced ringing. |
| Power-off disable | Prevents back-driving and bus contention during hot-swap events, supporting IEEE 1149.1 JTAG boundary scan in powered systems. |
| Latch-up immunity > JEDEC 17 | Guarantees robustness against transient-induced latch-up in noisy industrial environments. |
Applications
| Industrial Backplane Interface | Memory Address Buffering |
|---|---|
Use Scenario: Buffering 20-bit address lines between a 3.3V microcontroller and legacy 5V SRAM or EPROM modules on an industrial PLC backplane. IC Role / Device Role / Timing Role: Level-translating, noise-suppressed address driver with sub-5 ns propagation to meet SRAM access timing windows. Use Value: Eliminates discrete level shifters and series resistors while maintaining setup/hold margins via <250 ps output skew and controlled edge rates. |
Use Scenario: Driving 20-bit memory address bus in a high-density embedded controller with mixed 3.3V core and 5V peripheral voltage domains. IC Role / Device Role / Timing Role: Wide-bus buffer with dual 10-bit enable control, allowing partial address space gating during DMA cycles. Use Value: NANDed OE pairs permit selective activation of upper/lower address segments, reducing dynamic power and bus contention during burst transfers. |
| Hot-Swappable I/O Module | PCI/ISA Bus Extender |
Use Scenario: Enabling live insertion of modular I/O cards into a powered industrial chassis with shared 5V backplane. IC Role / Device Role / Timing Role: Isolation buffer with power-off disable ensuring outputs remain high-Z even when card VCC is unpowered during insertion. Use Value: Prevents bus lockup and backfeeding; IOFF ≤ ±100 µA at VCC = 0V meets hot-swap safety requirements without auxiliary circuitry. |
Use Scenario: Extending 20-bit ISA or PCI-compatible address/data bus between motherboard and add-on expansion module operating at different supply voltages. IC Role / Device Role / Timing Role: High-speed, low-skew bus repeater with 5V-tolerant I/O and ground-bounce suppression for reliable multi-slot operation. Use Value: Typical Volp performance exceeding MIL-STD-883D ensures signal integrity across long traces and multiple connectors without added ferrites or termination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVC164245DGGR | 16-bit dual-supply translator (1.65–3.6V A-side, 2.3–3.6V B-side); no 5V tolerance; 3.5 ns typical tPD. | Requires separate 3.3V supplies on both sides; unsuitable for direct 5V bus interfacing. | Select only if system uses strictly 3.3V domains and requires bidirectional translation. |
| 74FCT162827CTPV | Same 20-bit function but in 56-pin SSOP (O56); 4.8 ns max tPD; identical electrical specs except slower speed grade. | Same pinout and logic behavior; differs only in package and speed bin-acceptable where 4.8 ns delay is acceptable. | Valid alternative if TSSOP footprint unavailable and SSOP layout accommodated; verify thermal derating for same power dissipation. |
Compared with CY74FCT163827CPACT, SN74ALVC164245DGGR lacks 5V tolerance and bidirectional capability, limiting use in mixed-voltage systems, while 74FCT162827CTPV offers identical functionality in SSOP with relaxed timing-making it a drop-in package alternative but not a speed upgrade.
Availability
CY74FCT163827CPACT is available at Aetrix Electronics and suitable for industrial backplane interface, memory address buffering, and hot-swappable I/O module designs requiring stable component supply, long-term lifecycle support, and verified 5V-tolerant bus driving capability.
Supply support for CY74FCT163827CPACT 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 automotive IC design.
The CY74FCT163827CPACT belongs to TI's FCT logic family-engineered for low-noise, high-speed 3.3V bus interfacing with 5V tolerance, targeting industrial control, communications infrastructure, and legacy system upgrades.
FAQ
What is the maximum input voltage rating for CY74FCT163827CPACT?
The CY74FCT163827CPACT supports DC input voltages from –0.5V to +7.0V, enabling true 5V-tolerant operation on all inputs regardless of VCC level (2.7V–3.6V). This allows direct connection to 5V buses without external clamping or level-shifting circuitry, a key advantage over standard 3.3V-only logic families.
Does CY74FCT163827CPACT support hot-plug insertion?
Yes, CY74FCT163827CPACT features power-off disable with IOFF ≤ ±100 µA when VCC = 0V, ensuring outputs remain in high-impedance state during live insertion into powered backplanes. This prevents bus contention and protects upstream drivers, meeting industrial hot-swap reliability requirements.
What is the output drive capability of CY74FCT163827CPACT?
CY74FCT163827CPACT provides 24 mA sink and 6 mA source output drive per pin. The asymmetrical drive balances strong pull-down for noise immunity and controlled pull-up to minimize overshoot-reducing need for external termination while maintaining signal integrity on stub-loaded buses.
How many output enable inputs does CY74FCT163827CPACT have, and how are they configured?
CY74FCT163827CPACT has four active-low output enable inputs: 1OE1, 1OE2, 2OE1, and 2OE2. Each pair (1OE1/1OE2 and 2OE1/2OE2) is NANDed internally, allowing independent control of the two 10-bit sections with flexible gating logic-ideal for segmented bus enable schemes.
Is CY74FCT163827CPACT RoHS compliant?
Yes, CY74FCT163827CPACT is RoHS-compliant (Pb-Free), as confirmed by Texas Instruments' packaging documentation. It meets EU Directive 2011/65/EU requirements with lead-free terminations and green molding compound, suitable for environmentally regulated industrial and medical applications.
CY74FCT163827CPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CY74FCT163827CPACT FAQ
1.How can I place an order for CY74FCT163827CPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT163827CPACT 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 CY74FCT163827CPACT reliable?
The price and inventory of CY74FCT163827CPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT163827CPACT is usually 5 days.
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4.How is shipping managed for CY74FCT163827CPACT?
CY74FCT163827CPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT163827CPACT 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 CY74FCT163827CPACT?
For technical support, including CY74FCT163827CPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT163827CPACT requirements.
6.How does Aetrix verify that CY74FCT163827CPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT163827CPACT 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 CY74FCT163827CPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT163827CPACT?
All CY74FCT163827CPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT163827CPACT, 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 CY74FCT163827CPACT part is unused and in its original packaging.
Return procedure for CY74FCT163827CPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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