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Renesas IDT74LVC4245APGG
- Part No.:
- IDT74LVC4245APGG
- Manufacturer:
- Renesas
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
IDT74LVC4245APGG.pdf
- Description:
- IC TRANSLATOR BIDIR 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,287
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Product details
Overview
IDT74LVC4245APGG from Integrated Device Technology is an octal noninverting bus transceiver with dual-supply voltage translation (3.3V ↔ 5V), ±24mA drive strength, industrial temperature range (–40°C to +85°C), and 5V-tolerant I/O. It enables bidirectional data flow between mixed-voltage buses in embedded control interfaces.
For engineers reviewing the IDT74LVC4245APGG datasheet, IDT74LVC4245APGG pinout, IDT74LVC4245APGG application, or IDT74LVC4245APGG equivalent, key selection criteria include VCCA/VCCB supply separation, DIR/OE control logic, 3-state output timing, and SOIC-24 package compatibility for legacy PCB layouts.
Technical Context
The IDT74LVC4245APGG implements asynchronous bidirectional level translation using two independent power rails: VCCA = 5V ±0.5V for the A port and VCCB = 2.7V–3.6V for the B port. Direction is controlled by DIR, while OE forces high-impedance on both ports regardless of DIR state.
All inputs feature hysteresis (100 mV typ.) for noise immunity; outputs deliver rail-to-rail swing and support hot insertion. Propagation delays are ≤6.7 ns (A→B) and ≤6.3 ns (B→A), with enable/disable times under 10 ns at 50 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Supply | 5V ±0.5V - powers A-port I/O and defines 5V logic thresholds |
| VCCB Supply | 2.7V–3.6V - powers B-port I/O and sets 3.3V logic domain |
| Drive Strength | ±24mA - drives moderate loads without external buffers in mixed-voltage backplanes |
| Propagation Delay | ≤6.7 ns - ensures sub-10 ns timing margin for 100 MHz bus handshaking |
| Input Hysteresis | 100 mV typ. - rejects up to 100 mV of ground bounce or crosstalk on DIR/OE/Ax/Bx |
| Operating Temp | –40°C to +85°C - qualified for industrial control, telecom line cards, and factory automation |
| I/O Voltage Tolerance | 5V tolerant on all pins - allows safe connection to 5V signals even when VCCB = 3.3V |
Pinout & Package
Package: 24-pin TSSOP (Green, lead-free), body dimensions 7.8 mm × 4.4 mm × 1.2 mm, pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23 | GND | Separate ground returns for A and B domains; must be low-inductance connected |
| 2, 3, 4, 5, 6, 7, 8, 9 | A1–A8 | 5V-domain bidirectional I/O - connect to 5V microcontroller or ASIC bus |
| 14, 15, 16, 17, 18, 19, 20, 21 | B1–B8 | 3.3V-domain bidirectional I/O - interface to FPGA, DSP, or low-voltage memory |
| 10 | VCCA | 5V supply for A-port circuitry and output drivers |
| 11, 12 | VCCB | 3.3V supply for B-port logic and drivers (dual VCCB pins reduce IR drop) |
| 13 | OE | Active-low output enable - overrides DIR to force high-Z on both ports simultaneously |
| 22 | DIR | Direction control - LOW = B→A, HIGH = A→B; sampled synchronously with OE |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail translation | Independent VCCA (5V) and VCCB (3.3V) supplies enable true bidirectional level shifting without direction latching |
| Rail-to-rail output swing | VOH ≥ 4.3V @ 5V, VOL ≤ 0.55V @ 24mA - maximizes noise margin in noisy industrial environments |
| 5V-tolerant I/O | All pins withstand 5V input even when VCCB = 2.7V - eliminates need for external clamping diodes |
| Hot-insertion support | IOZH/IOZL ≤ ±5 µA in 3-state - prevents bus contention during live module replacement |
| Hysteresis-enhanced inputs | 100 mV typical hysteresis on DIR, OE, and data pins - suppresses false triggering from EMI or slow edges |
Applications
| Industrial PLC Backplane Interface | Telecom Line Card Voltage Bridging |
|---|---|
|
Use Scenario: Interfacing a 5V microcontroller-based CPU module to a 3.3V FPGA-based I/O expansion module in a DIN-rail mounted PLC chassis. IC Role / Device Role / Timing Role: Bidirectional level translator and bus driver managing address/data/control lines across voltage domains with DIR-controlled direction and OE-gated isolation. Use Value: Eliminates discrete resistor-divider networks and reduces board space by 60% versus discrete MOSFET solutions while maintaining <10 ns propagation delay. |
Use Scenario: Connecting legacy 5V serial management interfaces (e.g., RS-232 transceivers) to modern 3.3V packet-processing ASICs on telecom line cards. IC Role / Device Role / Timing Role: Voltage-shifting transceiver enabling synchronous UART, SPI, or JTAG communication between mismatched voltage domains. Use Value: Supports hot-swap maintenance via 5V-tolerant I/O and low quiescent current (≤80 µA), reducing standby power by >90% vs. older bipolar translators. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Isolating 5V CAN controller signals from 3.3V sensor fusion MCU in vehicle body electronics, operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Robust bidirectional translator with hysteresis and industrial temp rating ensuring reliable signal integrity in engine bay proximity. Use Value: Meets automotive EMC requirements via rail-to-rail swing and ±24mA drive, eliminating need for additional line drivers in LIN/CAN subsystems. |
Use Scenario: Adapting 5V logic analyzer probe outputs to 3.3V DUT inputs during functional validation of mixed-voltage digital boards. IC Role / Device Role / Timing Role: Reconfigurable transceiver allowing real-time direction reversal (via DIR) and bus isolation (via OE) during test sequence transitions. Use Value: Enables single-probe setup for both stimulus and capture modes, cutting test fixture complexity and reducing debug cycle time by ~35%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver and voltage translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC4245APW | TSSOP-24 package same; identical electrical specs but TI's version uses different thermal pad layout and has slightly higher ICCZ (1.5 mA vs. 0.5 mA) | Same industrial temp range and 3.3V↔5V translation capability; validated for TI-based reference designs | Preferred when sourcing from TI-authorized channels or aligning with TI's LVC family BOMs |
| 74AVC4245PW | NXP variant with wider VCCB range (1.2V–3.6V); supports 1.8V I/O but lower drive (±12mA) and no hysteresis on DIR/OE | Suitable for ultra-low-voltage systems (e.g., 1.8V FPGA I/O), but not drop-in for 3.3V-only designs requiring noise immunity | Select only if migrating to sub-2.5V logic domains; requires redesign of DIR/OE filtering due to missing hysteresis |
Compared with SN74LVC4245APW and 74AVC4245PW, the IDT74LVC4245APGG delivers superior noise immunity (100 mV hysteresis), tighter ICCZ (500 µA max), and proven reliability in high-vibration industrial deployments - making it optimal for deterministic real-time bus bridging where signal integrity is critical.
Availability
IDT74LVC4245APGG is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line cards, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT74LVC4245APGG 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, interface, and memory solutions for communications, computing, and industrial markets.
The IDT74LVC4245APGG belongs to IDT's LVC logic family, engineered specifically for robust voltage-level bridging in mixed-signal industrial systems where reliability, noise immunity, and dual-supply flexibility are mandatory.
FAQ
What is the maximum data rate supported by the IDT74LVC4245APGG?
The IDT74LVC4245APGG does not specify a maximum data rate in its datasheet. Instead, it guarantees propagation delays ≤6.7 ns and enable/disable times ≤9.8 ns under 50 pF load. These timing parameters support reliable operation up to approximately 80–100 MHz for synchronous bus protocols like parallel address/data transfers, assuming proper PCB layout and termination.
Can the IDT74LVC4245APGG operate with VCCB = 2.5V?
No. The IDT74LVC4245APGG specifies VCCB = 2.7V to 3.6V per DC electrical characteristics. Operation at 2.5V falls outside the validated range and may cause unreliable logic thresholds, increased ICC, or failure to meet VOH/VOL specifications - particularly on the B port where VIH min is 2.0V and VIL max is 0.8V only within the rated VCCB window.
Is the IDT74LVC4245APGG pin-compatible with the SN74LVC4245APW?
Yes. Both IDT74LVC4245APGG and SN74LVC4245APW use identical 24-pin TSSOP packages with matching pinouts, including GND, VCCA, VCCB, DIR, OE, and A/B port assignments. Mechanical and electrical pin compatibility is confirmed by manufacturer package drawings and JEDEC MO-153 standards.
Does the IDT74LVC4245APGG require external pull-up resistors on DIR or OE?
No. The IDT74LVC4245APGG features internal weak pull-downs on DIR and OE, with IIH ≤ ±1 µA and input hysteresis ensuring stable logic levels without external biasing. External resistors are unnecessary unless system-level noise or long trace lengths demand additional noise suppression beyond the built-in 100 mV hysteresis.
How does the IDT74LVC4245APGG handle simultaneous switching noise (SSN)?
The IDT74LVC4245APGG mitigates SSN through rail-to-rail output swing, separate VCCA/VCCB supplies with dual VCCB pins, and ±24mA drivers designed for controlled edge rates. Its 39.5 pF typical CPD (per transceiver) and low ΔICC variation (<1.5 mA) minimize supply rail disturbance during full-bus toggling, reducing ground bounce in dense PCB layouts.
IDT74LVC4245APGG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74LVC
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- Translator Type:
- -
- Channel Type:
- -
- Number of Circuits:
- -
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- -
- Data Rate:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP (0.173", 4.40mm Width)
IDT74LVC4245APGG FAQ
1.How can I place an order for IDT74LVC4245APGG through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT74LVC4245APGG 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 IDT74LVC4245APGG reliable?
The price and inventory of IDT74LVC4245APGG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT74LVC4245APGG is usually 5 days.
3.What payment methods are accepted for IDT74LVC4245APGG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT74LVC4245APGG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT74LVC4245APGG?
IDT74LVC4245APGG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT74LVC4245APGG 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 IDT74LVC4245APGG?
For technical support, including IDT74LVC4245APGG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT74LVC4245APGG requirements.
6.How does Aetrix verify that IDT74LVC4245APGG is sourced from the original manufacturer or authorized distributors?
All IDT74LVC4245APGG 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 IDT74LVC4245APGG meets industry standards.
7.What is the process for return or replacement of IDT74LVC4245APGG?
All IDT74LVC4245APGG units undergo pre-shipment inspection (PSI). If there is an issue with IDT74LVC4245APGG, 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 IDT74LVC4245APGG part is unused and in its original packaging.
Return procedure for IDT74LVC4245APGG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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