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Renesas 74FCT164245TPAG
- Part No.:
- 74FCT164245TPAG
- Manufacturer:
- Renesas
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74FCT164245TPAG.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:489
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Product details
Overview
74FCT164245TPAG from Renesas Electronics (formerly IDT) is a 16-bit bidirectional voltage-level translator IC enabling interoperability between 3.3V and 5V digital buses. It features dual supply operation (VCC1 = 5V ±10%, VCC2 = 2.7–3.6V), high-drive outputs (–32mA IOH, 64mA IOL on 5V port), and industrial temperature range (–40°C to +85°C). It is used in mixed-voltage backplane interfaces and hot-pluggable board designs.
For engineers reviewing the 74FCT164245TPAG datasheet, 74FCT164245TPAG pinout, 74FCT164245TPAG application, or 74FCT164245TPAG equivalent, key selection criteria include bidirectional 3.3V↔5V translation capability, power-off disable for live insertion, control input voltage tolerance (3.3V or 5V compatible), and low propagation delay (1.5–5 ns).
Technical Context
The 74FCT164245TPAG implements two independent 8-bit transceivers or one unified 16-bit transceiver via separate DIR/OE controls per side. Its A-port (3.3V) and B-port (5V) support asynchronous bidirectional data flow with direction controlled by xDIR and output state gated by active-low xOE.
It uses 0.5 µm CMOS technology with power-off disable on both ports, allowing safe "live insertion" into powered systems. Input hysteresis (150 mV) improves noise immunity, and clamp diodes (VIK = –0.7 to –1.2 V) protect against overvoltage transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 / VCC2 | 5V ±10% / 2.7–3.6V - enables robust interfacing between legacy 5V logic and modern 3.3V systems |
| Propagation Delay | 1.5–5 ns - supports high-speed bus communication up to ~200 MHz effective data rates |
| IOH / IOL (B-port) | –32mA / 64mA - drives heavy capacitive loads (e.g., backplanes, long traces) without signal degradation |
| Input Voltage Tolerance | VIH up to 5.5V, VIL down to –0.5V - allows direct connection to 3.3V or 5V control sources without level-shifting circuitry |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure |
| ESD Rating | >2000V HBM, >200V MM - ensures reliability during handling and system integration |
| Power-Off Leakage | ±100 µA at VCC1 = VCC2 = 0V - prevents unintended current paths when supplies are off |
Pinout & Package
TSSOP-48 package (4.4 mm × 9.7 mm, 0.5 mm pitch), RoHS-compliant, green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input (Active HIGH) | Determines data flow direction per 8-bit section: LOW = B→A, HIGH = A→B |
| 1OE, 2OE | Output Enable Input (Active LOW) | Disables both A/B ports to high-impedance when HIGH; overrides DIR control |
| 1A1–1A8, 2A1–2A8 | 3.3V I/O Port (Side A) | Bidirectional interface pins for 3.3V bus; tolerate 5V inputs and drive 3.3V outputs |
| 1B1–1B8, 2B1–2B8 | 5V I/O Port (Side B) | Bidirectional interface pins for 5V bus; deliver high-current drive (64mA sink) and accept 3.3V logic levels |
| VCC1, VCC2 | Power Supplies | VCC1 powers B-port (5V domain); VCC2 powers A-port (3.3V domain); sequencing requirement: VCC1 ≥ VCC2 – 0.5V |
| GND | Ground Reference | Multiple dedicated GND pins (Pins 3, 7, 10, 15, 21, 24, 31, 34, 42, 45) minimize ground bounce and improve noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual 8-bit control | Enables flexible partitioning: e.g., one 8-bit channel for address, another for data-no external logic required |
| Live-insertion support | Power-off disable on both ports prevents bus contention during hot-swap of daughterboards or modules |
| Low ground bounce (VOLP < 0.9V) | Maintains signal integrity under heavy switching loads, critical for stable timing in high-speed backplanes |
| Input hysteresis (150 mV) | Rejects slow-rising/falling edges and EMI-induced noise on control lines (DIR/OE), improving system robustness |
| Clamp diode protection | VIK = –0.7 to –1.2 V limits negative transients, protecting internal circuitry from ESD or inductive kickback |
Applications
| Industrial Backplane Interface | Hot-Swappable Module Interconnect |
|---|---|
Use Scenario: Connecting 3.3V FPGA-based control cards to legacy 5V peripheral slots in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing data/address transfer across supply domains with sub-5 ns latency. Use Value: Eliminates need for discrete resistor-based level shifters or additional buffer ICs, reducing BOM count and layout area. | Use Scenario: Enabling field-replaceable compute modules in telecom line cards where boards are inserted/removed while main chassis remains powered. IC Role / Device Role / Timing Role: Isolating 3.3V module logic from 5V backplane during insertion using power-off disable functionality. Use Value: Prevents bus contention and latch-up events, ensuring system uptime and avoiding reset cascades during maintenance. |
| Legacy System Upgrade Bridge | Automated Test Equipment (ATE) Signal Conditioning |
Use Scenario: Integrating modern 3.3V microcontrollers into aging 5V instrumentation systems without redesigning entire PCBs. IC Role / Device Role / Timing Role: Translating control signals (e.g., SPI clock, chip select) and bidirectional data between voltage domains. Use Value: Preserves investment in existing 5V analog front-ends while enabling lower-power, higher-integration 3.3V controllers. | Use Scenario: Routing high-speed digital test patterns between 3.3V pattern generators and 5V DUT interfaces in semiconductor ATE platforms. IC Role / Device Role / Timing Role: Maintaining signal fidelity across voltage domains with minimal added skew (≤5 ns max delay mismatch). Use Value: Ensures precise timing alignment between stimulus and response paths, critical for parametric test accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC16T245DGGR | Single-supply (1.2–3.6V), supports 1.8V/2.5V/3.3V translation; no 5V-tolerant I/O without external resistors | Best suited for ultra-low-voltage multi-rail systems; not direct replacement for 5V bus interfacing | Select when interfacing sub-3.3V logic only; avoid if 5V bus presence is required. |
| TXB0108PWR | Auto-direction sensing, single 1.2–3.6V supply, 8-bit, open-drain enable; no 5V I/O tolerance | Designed for I²C/SPI between 1.8V/3.3V devices; lacks high-drive capability and 5V compatibility | Choose for simple, low-pin-count 3.3V↔1.8V translation; not suitable for 5V bus or high-current loads. |
Compared with SN74AVC16T245DGGR and TXB0108PWR, the 74FCT164245TPAG uniquely supports true 3.3V↔5V bidirectional translation with high-current drive and industrial temperature rating-making it irreplaceable in legacy-system upgrades and rugged backplane designs.
Availability
74FCT164245TPAG is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and automated test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74FCT164245TPAG 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
Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The 74FCT164245TPAG belongs to Renesas' legacy IDT logic portfolio, engineered specifically for robust mixed-voltage system integration in industrial and communications equipment.
FAQ
What is the supply voltage sequencing requirement for 74FCT164245TPAG?
The 74FCT164245TPAG requires VCC1 ≥ (VCC2 – 0.5V) at all times. If VCC1 falls below this threshold, both A and B ports enter high-impedance state. This prevents undefined behavior during power-up/down transitions and ensures safe operation in systems with asymmetric supply ramp rates. Always verify sequencing in your power management design before deploying 74FCT164245TPAG.
Can control inputs (xDIR/xOE) be driven directly from 3.3V logic when VCC1 = 5V and VCC2 = 3.3V?
Yes - the 74FCT164245TPAG control inputs are 5V-tolerant and fully compatible with 3.3V CMOS logic levels. VIH minimum is 2.0V and VIL maximum is 0.8V, so standard 3.3V outputs meet these thresholds with margin. No level-shifting circuitry is needed for xDIR or xOE, simplifying interface design in mixed-supply systems using 74FCT164245TPAG.
Does 74FCT164245TPAG support hot insertion, and how is it implemented?
Yes - 74FCT164245TPAG supports hot insertion via power-off disable: when either VCC1 or VCC2 is at 0V, the corresponding port enters high-impedance state with leakage ≤ ±100 µA. This prevents bus contention and back-driving during live board insertion. The feature is intrinsic to the IC's architecture and requires no external components - a core design advantage of the 74FCT164245TPAG in modular systems.
What is the maximum capacitive load the 74FCT164245TPAG can drive on its 5V port?
The 74FCT164245TPAG B-port (5V) is characterized for CL ≤ 50 pF in switching tests, but its high-output drive (64mA sink, –32mA source) supports heavier loads in practice. For reliable operation beyond 50 pF, derate propagation delay and verify VOL/VOLP under actual load conditions. Layout best practices (short traces, local decoupling) are essential - the 74FCT164245TPAG is commonly used to drive 100+ pF backplanes with proper design.
Is 74FCT164245TPAG pin-compatible with other members of the FCT164245 family?
Yes - the 74FCT164245TPAG shares identical pinout and function with other TSSOP-48 variants in the FCT164245 family (e.g., 74FCT164245CTPAG, 74FCT164245ETPAG), differing only in speed grade and drive strength. All use the same DIR/OE control scheme, supply pin mapping, and I/O assignment. This allows drop-in replacement within the same package footprint when upgrading or qualifying alternate speed grades of the 74FCT164245TPAG.
74FCT164245TPAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74FCT
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 2.7 V ~ 3.6 V
- Voltage - VCCB:
- 4.5 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFSOP (0.240", 6.10mm Width)
74FCT164245TPAG FAQ
1.How can I place an order for 74FCT164245TPAG through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT164245TPAG 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 74FCT164245TPAG reliable?
The price and inventory of 74FCT164245TPAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT164245TPAG is usually 5 days.
3.What payment methods are accepted for 74FCT164245TPAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT164245TPAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT164245TPAG?
74FCT164245TPAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT164245TPAG 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 74FCT164245TPAG?
For technical support, including 74FCT164245TPAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT164245TPAG requirements.
6.How does Aetrix verify that 74FCT164245TPAG is sourced from the original manufacturer or authorized distributors?
All 74FCT164245TPAG 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 74FCT164245TPAG meets industry standards.
7.What is the process for return or replacement of 74FCT164245TPAG?
All 74FCT164245TPAG units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT164245TPAG, 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 74FCT164245TPAG part is unused and in its original packaging.
Return procedure for 74FCT164245TPAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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