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Texas Instruments CY74FCT162245TPACT
- Part No.:
- CY74FCT162245TPACT
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CY74FCT162245TPACT.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,054
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Product details
Overview
CY74FCT162245TPACT from Texas Instruments is a 16-bit non-inverting bus transceiver with balanced 24-mA output drivers, Ioff partial-power-down support, and industrial-grade operation (–40°C to +85°C) at VCC = 5V ±10%. It enables bidirectional data flow between two buses in high-speed digital systems such as memory interfaces and backplane drivers.
For engineers reviewing the CY74FCT162245TPACT datasheet, CY74FCT162245TPACT pinout, CY74FCT162245TPACT application, or CY74FCT162245TPACT equivalent, key selection criteria include its 24-mA balanced drive strength, <0.6V typical ground bounce at 5V/25°C, 4.5 ns max propagation delay (A↔B), TSSOP-48 package, and bus-noise-reduction edge-rate control circuitry.
Technical Context
This device operates as a dual-octal or unified 16-bit transceiver controlled by DIR (direction) and OE (output enable, active-low). Its Ioff circuitry disables outputs during power-down to prevent current backflow, meeting partial-power-down requirements.
Unlike the CY74FCT16245T, the CY74FCT162245TPACT features current-limiting resistors integrated into its 24-mA balanced drivers - reducing need for external termination, minimizing undershoot, and lowering system switching noise when driving transmission lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - compatible with standard TTL/CMOS logic rails and industrial 5V systems. |
| Propagation Delay (A↔B) | Max 4.5 ns - supports >200 MHz data rates in synchronous bus applications. |
| Output Drive Strength | ±24 mA balanced - ensures robust signal integrity on unterminated or lightly loaded transmission lines. |
| Ground Bounce (VOLP) | <0.6 V typical at VCC=5V, TA=25°C - reduces noise coupling into shared ground planes. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating. |
| Ioff Support | Yes - prevents damaging back-current during partial power-down, enabling hot-swap-capable designs. |
| ESD Rating | >2000 V HBM - improves handling robustness and board-level reliability. |
Pinout & Package
TSSOP-48 (DGG) package: 48-pin, 0.5-mm pitch, 12.6 mm × 6.2 mm body, 1.2 mm max height, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control inputs (active-HIGH) | Determines data flow direction per octal section: HIGH = A→B, LOW = B→A. |
| 1OE, 2OE | Output enable inputs (active-LOW) | Tri-states all outputs in associated octal when HIGH; enables bidirectional transfer when LOW. |
| 1A1–1A8, 2A1–2A8 | Port A data terminals | Input or three-state output pins for first and second octal sections; connect to source bus. |
| 1B1–1B8, 2B1–2B8 | Port B data terminals | Input or three-state output pins for first and second octal sections; connect to destination bus. |
| VCC (Pins 24, 25, 47, 48) | Power supply | Four dedicated VCC pins reduce supply impedance and improve noise immunity across wide bus. |
| GND (Pins 12, 13, 26, 27, 39, 40) | Ground reference | Six GND pins provide low-inductance return paths, critical for controlling ground bounce in 16-bit switching. |
Key Features
| Feature | Design Value |
|---|---|
| Balanced 24-mA output drivers | Enables clean signal edges on transmission lines without external series termination resistors. |
| Integrated edge-rate control | Reduces simultaneous switching noise (SSN) and EMI compared to uncontrolled CMOS drivers. |
| Ioff partial-power-down | Allows safe isolation of powered-down sections in mixed-voltage or hot-plug systems. |
| Low ground bounce (<0.6 V) | Mitigates voltage droop on shared ground nets, preserving timing margins in dense PCB layouts. |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in factory automation and telecom infrastructure. |
Applications
| Memory Interface Buffering | Backplane Data Transfer |
|---|---|
|
Use Scenario: Bidirectional data exchange between microcontroller and SRAM/Flash memory banks with separate address/data buses. IC Role / Device Role / Timing Role: Level-shifting, bus isolation, and drive-strength enhancement for 16-bit parallel memory access cycles. Use Value: 4.5 ns propagation delay and 24-mA drive ensure setup/hold timing compliance even with 15-pF trace capacitance. |
Use Scenario: Synchronizing data between line cards in modular industrial PLC chassis using parallel backplane wiring. IC Role / Device Role / Timing Role: Bus transceiver providing controlled slew rate and noise-suppressed signaling across 15-cm backplane traces. Use Value: Integrated current-limiting and <0.6 V ground bounce maintain signal fidelity across multiple simultaneously switching bits. |
| Test Equipment Bus Coupling | Legacy System Interfacing |
|
Use Scenario: Connecting FPGA-based pattern generators to DUTs with legacy 5V parallel test interfaces (e.g., IEEE 1149.1 boundary scan). IC Role / Device Role / Timing Role: Direction-controlled bidirectional buffer isolating tester logic from DUT power domains while maintaining timing accuracy. Use Value: Ioff protection allows safe insertion/removal of test fixtures without disrupting powered subsystems. |
Use Scenario: Bridging modern microprocessor buses to older peripheral controllers (e.g., ISA-style I/O expansion) requiring 5V-tolerant bidirectional data paths. IC Role / Device Role / Timing Role: Voltage-compatible transceiver enabling protocol-transparent data handshaking between mismatched logic families. Use Value: 5V ±10% supply tolerance and TTL-compatible input thresholds ensure interoperability with legacy 5V peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16245TPACT | Higher drive (64 mA sink / 32 mA source); no current-limiting resistors; higher ground bounce (~1.0 V). | Better suited for driving heavy capacitive loads (e.g., >50 pF) or low-impedance backplanes where speed outweighs noise concerns. | Select CY74FCT16245TPACT only if load capacitance exceeds 30 pF and ground bounce is mitigated externally. |
| CY74FCT162H245TPACT | Includes bus-hold circuitry on all data inputs; identical 24-mA drive and noise performance. | Eliminates need for external pull-up/down resistors on floating bus lines, simplifying layout in sparse or intermittently driven systems. | Choose CY74FCT162H245TPACT when input bus states may float (e.g., hot-swap slots or unpopulated connectors). |
Compared with CY74FCT16245TPACT and CY74FCT162H245TPACT, the CY74FCT162245TPACT offers optimal balance of noise control, drive capability, and layout simplicity for general-purpose 5V bidirectional bus interfacing - especially where transmission-line behavior dominates over raw loading capacity.
Availability
CY74FCT162245TPACT is available at Aetrix Electronics and suitable for industrial control systems, memory interface buffering, and backplane data transfer requiring stable component supply and long-term lifecycle support.
Supply support for CY74FCT162245TPACT 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 broad industrial and automotive qualification.
The CY74FCT162245TPACT belongs to TI's FCT logic family - designed specifically for high-speed, low-noise 5V bus interfacing in industrial and communications infrastructure equipment.
FAQ
What is the maximum operating frequency supported by CY74FCT162245TPACT?
CY74FCT162245TPACT supports data rates up to approximately 220 MHz, derived from its 4.5 ns maximum propagation delay (tPLH/tPHL) and tight output skew (<0.5 ns). This enables reliable use in high-speed synchronous bus protocols like parallel ATA or custom memory-mapped interfaces where timing margins are constrained by trace length and loading.
Does CY74FCT162245TPACT require external termination resistors?
No - CY74FCT162245TPACT integrates current-limiting resistors in its 24-mA balanced output drivers, which significantly reduce the need for external series termination. This design minimizes undershoot and ground bounce, making it suitable for direct connection to moderately loaded transmission lines (e.g., FR-4 PCB traces up to 15 cm with ~10–15 pF load).
Can CY74FCT162245TPACT be used in partial-power-down systems?
Yes - CY74FCT162245TPACT includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow from live buses into a powered-down device. This feature is fully specified and tested per industry standards, enabling safe integration into hot-swap and multi-rail power architectures.
What is the difference between CY74FCT162245TPACT and CY74FCT162H245TPACT?
CY74FCT162H245TPACT adds bus-hold circuitry on all data inputs - retaining the last valid logic state when inputs float - whereas CY74FCT162245TPACT does not. Both share identical 24-mA drive strength, noise performance, and pinout. Choose CY74FCT162H245TPACT when input lines may be disconnected or unterminated during operation.
Is CY74FCT162245TPACT RoHS-compliant?
Yes - CY74FCT162245TPACT is RoHS-compliant per TI's packaging addendum, with lead finish and material composition meeting EU Directive 2011/65/EU requirements. The TSSOP-48 (DGG) package uses matte tin lead finish and is rated MSL-1 for moisture sensitivity.
CY74FCT162245TPACT 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
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
CY74FCT162245TPACT FAQ
1.How can I place an order for CY74FCT162245TPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT162245TPACT 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 CY74FCT162245TPACT reliable?
The price and inventory of CY74FCT162245TPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT162245TPACT is usually 5 days.
3.What payment methods are accepted for CY74FCT162245TPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT162245TPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT162245TPACT?
CY74FCT162245TPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT162245TPACT 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 CY74FCT162245TPACT?
For technical support, including CY74FCT162245TPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT162245TPACT requirements.
6.How does Aetrix verify that CY74FCT162245TPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT162245TPACT 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 CY74FCT162245TPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT162245TPACT?
All CY74FCT162245TPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT162245TPACT, 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 CY74FCT162245TPACT part is unused and in its original packaging.
Return procedure for CY74FCT162245TPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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