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Texas Instruments 74AVCB164245ZRDR
- Part No.:
- 74AVCB164245ZRDR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74AVCB164245ZRDR.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 54BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74AVCB164245ZRDR from Texas Instruments is a 16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs, designed for bidirectional level-shifting between 1.4 V–3.6 V domains (e.g., 1.8 V ↔ 3.3 V). It features independent A/B ports tracking VCCA and VCCB, Ioff support for partial-power-down, DOC™ dynamic output impedance control, and ±24 mA drive capability at 2.5 V.
For engineers reviewing the 74AVCB164245ZRDR datasheet, 74AVCB164245ZRDR pinout, 74AVCB164245ZRDR application, or 74AVCB164245ZRDR equivalent, this device is selected for mixed-voltage interconnects in FPGA-to-ASIC interfaces, memory subsystems, and industrial I/O controllers where rail-flexible isolation and noise-aware switching are required.
Technical Context
The 74AVCB164245ZRDR implements dual-rail asynchronous translation: A-port inputs reference VCCA (1.4–3.6 V), B-port inputs/outputs reference VCCB (1.4–3.6 V), and control pins (DIR, OE) are VCCB-referenced. Its DOC™ circuitry dynamically modulates output impedance during transitions to reduce simultaneous switching noise while maintaining ±24 mA drive strength.
Ioff protection disables outputs when either VCCA or VCCB = GND, preventing backflow current. The device operates across –40°C to +85°C and supports full 16-bit bidirectional data flow per direction-control logic state, with propagation delays as low as 1.3 ns (VCCA = 2.5 V, VCCB = 1.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.4 V to 3.6 V - Enables A-port interface with 1.5/1.8/2.5/3.3 V logic families without external level shifters. |
| VCCB Range | 1.4 V to 3.6 V - Independently powers B-port and control inputs, allowing asymmetric voltage translation (e.g., 1.8 V A ↔ 3.3 V B). |
| IOH/IOL Drive | ±24 mA at 2.5 V - Delivers standard-output drive strength while maintaining low-noise operation via DOC™ impedance modulation. |
| tpd (min) | 1.3 ns - Minimum propagation delay enables use in high-speed digital interconnects up to ~300 MHz effective data rate. |
| Ioff Current | ±10 µA - Limits leakage during partial power-down, protecting powered-down rails from backfeeding when VCCA or VCCB = 0 V. |
| VIH/VIL (control) | VCCB-referenced thresholds - Ensures reliable DIR/OE operation regardless of VCCA value, simplifying control logic design. |
| ESD Rating | 2000-V HBM - Meets industrial-grade robustness requirements for board-level handling and system integration. |
Pinout & Package
74AVCB164245ZRDR is packaged in a 54-ball ZRD (Pb-free VFBGA) with 0.5 mm pitch, 7.0 mm × 4.5 mm body, and 1.0 mm max height. Ball mapping follows JEDEC MO-194, with dedicated VCCA/VCCB supplies, ground planes, and dual-octal I/O banks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-high signal selecting data flow direction per 8-bit section (A→B or B→A); referenced to VCCB. |
| 1OE, 2OE | Output enable input | Active-low control enabling/disabling respective 8-bit port outputs; tied to VCCB via pull-up for safe power-up state. |
| 1A1–1A8, 2A1–2A8 | A-port data I/O | Bidirectional signals tracking VCCA; tolerate overvoltage up to VCCA + 0.5 V in active state. |
| 1B1–1B8, 2B1–2B8 | B-port data I/O | Bidirectional signals tracking VCCB; tolerate overvoltage up to VCCB + 0.5 V in active state. |
| VCCA | A-port supply | Power rail for A-side logic and I/O; must be stable before enabling outputs to avoid undefined states. |
| VCCB | B-port and control supply | Supplies B-port I/O, DIR, and OE inputs; defines VIH/VIL thresholds and output voltage swing. |
| GND | Ground reference | Four dedicated ground balls provide low-inductance return paths for both power domains and reduce ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Independent 1.4–3.6 V operation on A and B ports enables seamless interfacing between disparate logic families without external components. |
| DOC™ dynamic output control | Reduces simultaneous switching noise by lowering output impedance during edge transitions, then raising it to limit ringing-no external termination needed. |
| Ioff partial-power-down support | Prevents damaging current flow when either VCCA or VCCB is at GND, enabling hot-swap and power-gating scenarios in modular systems. |
| VCCB-referenced controls | DIR and OE thresholds track VCCB, eliminating need for level-shifted control signals when VCCA ≠ VCCB. |
| Overvoltage-tolerant I/O | Withstands input/output voltages up to VCCX + 0.5 V, supporting robust operation during supply sequencing or fault conditions. |
Applications
| FPGA-to-ASIC Interface | Industrial I/O Controller |
|---|---|
|
Use Scenario: Bidirectional data exchange between a 1.8 V FPGA and a 3.3 V ASIC in programmable logic systems. IC Role / Device Role / Timing Role: Voltage-translating bus transceiver managing synchronous parallel data transfers with direction control synchronized to system clock domain boundaries. Use Value: Eliminates discrete level shifters and reduces PCB area by 40% versus discrete solutions while maintaining timing integrity across voltage domains. |
Use Scenario: Isolating fieldbus peripherals (e.g., RS-485 PHYs, analog front-ends) from a 2.5 V microcontroller bus in factory automation equipment. IC Role / Device Role / Timing Role: 3-state-enabled buffer providing rail-flexible isolation during bus arbitration and fault recovery sequences. Use Value: Prevents backfeed into powered-down MCU sections during maintenance mode, satisfying IEC 61000-4-5 surge immunity requirements. |
| Memory Subsystem Bridge | Test Equipment Backplane |
|
Use Scenario: Interfacing a 3.3 V DDR SDRAM controller with a 1.5 V LPDDR2 memory module in portable instrumentation. IC Role / Device Role / Timing Role: Dual-supply transceiver translating address/data/control lines with matched propagation delay across all 16 bits. Use Value: Maintains setup/hold timing margins under worst-case VCCA/VCCB combinations, enabling reliable 200 MHz memory access. |
Use Scenario: Reconfigurable signal routing between multiple instrument modules operating at different logic voltages in automated test systems. IC Role / Device Role / Timing Role: Programmable bus isolator enabling dynamic reconfiguration of measurement channels without hardware changes. Use Value: Supports hot-plug module insertion by disabling affected ports via OE, avoiding bus contention during insertion/removal events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC16T245DGGR | 16-bit, dual-supply, but uses single OE/DIR per 16-bit bank (not dual-octal); no DOC™ circuitry. | Lacks per-section direction control and dynamic noise suppression; suited for simpler point-to-point links. | Select when per-octet control is unnecessary and lower cost is prioritized over EMI-sensitive environments. |
| 74LVC16T245PW | Single-supply (1.65–3.6 V), no VCCA/VCCB separation; fixed 3.3 V tolerant I/O, no Ioff. | Cannot translate between mismatched rails (e.g., 1.8 V ↔ 3.3 V); unsuitable for partial-power-down systems. | Choose only for same-rail expansion buses where voltage translation is not required and space constraints favor TSSOP. |
Compared with SN74AVC16T245DGGR and 74LVC16T245PW, the 74AVCB164245ZRDR uniquely delivers per-octet direction control, DOC™ noise reduction, and true dual-rail Ioff protection-critical for complex mixed-voltage systems requiring granular power management and EMI compliance.
Availability
74AVCB164245ZRDR is available at Aetrix Electronics and suitable for FPGA-to-ASIC interfaces, industrial I/O controllers, and memory subsystem bridges requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for 74AVCB164245ZRDR 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 expertise in high-reliability interface ICs.
The 74AVCB164245ZRDR belongs to TI's Widebus™ family of advanced voltage-translating transceivers, engineered specifically for low-noise, rail-flexible communication in industrial, computing, and communications infrastructure.
FAQ
What voltage ranges does the 74AVCB164245ZRDR support on its A and B ports?
The 74AVCB164245ZRDR supports 1.4 V to 3.6 V independently on both VCCA (A port) and VCCB (B port), enabling translation between any combination of 1.5 V, 1.8 V, 2.5 V, and 3.3 V logic domains. This range is validated per TI's SCES394D datasheet under recommended operating conditions, with absolute maximum ratings extending to 4.6 V.
How does the DOC™ circuitry in the 74AVCB164245ZRDR reduce noise during signal transitions?
The DOC™ (Dynamic Output Control) circuitry in the 74AVCB164245ZRDR lowers output impedance at the start of a transition to rapidly drive capacitive loads, then raises impedance mid-transition to suppress ringing and overshoot. This eliminates the need for external series resistors while maintaining ±24 mA drive strength, as confirmed in TI's SCEA009 application report and Figure 1 of the SCES394D datasheet.
Can the 74AVCB164245ZRDR be used when only one supply rail is powered?
Yes-the 74AVCB164245ZRDR supports partial-power-down via Ioff circuitry: if either VCCA or VCCB is at GND, both A and B ports enter high-impedance state, preventing back-current flow. This behavior is guaranteed per JESD78 Class II latch-up testing and documented in the Functional Description section of SCES394D.
What is the pin configuration difference between the ZRD (74AVCB164245ZRDR) and DGG packages?
The 74AVCB164245ZRDR uses a 54-ball VFBGA (ZRD) package with JEDEC MO-194 footprint, while the DGG variant is a 48-pin TSSOP. ZRD provides superior thermal performance (θJA = 36°C/W vs. 70°C/W for DGG) and higher I/O density, but requires BGA assembly; DGG supports through-hole prototyping and wave soldering.
Is the 74AVCB164245ZRDR suitable for automotive applications?
The base 74AVCB164245ZRDR is not qualified for automotive use; however, TI offers the pin-compatible SN74AVCB164245-Q1 variant, which meets AEC-Q100 Grade 2 (–40°C to +105°C) and includes enhanced reliability testing for automotive control units and ADAS subsystems.
74AVCB164245ZRDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCB
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.4 V ~ 3.6 V
- Voltage - VCCB:
- 1.4 V ~ 3.6 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:
- 54-TFBGA
74AVCB164245ZRDR FAQ
1.How can I place an order for 74AVCB164245ZRDR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCB164245ZRDR 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 74AVCB164245ZRDR reliable?
The price and inventory of 74AVCB164245ZRDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCB164245ZRDR is usually 5 days.
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4.How is shipping managed for 74AVCB164245ZRDR?
74AVCB164245ZRDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVCB164245ZRDR 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 74AVCB164245ZRDR?
For technical support, including 74AVCB164245ZRDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCB164245ZRDR requirements.
6.How does Aetrix verify that 74AVCB164245ZRDR is sourced from the original manufacturer or authorized distributors?
All 74AVCB164245ZRDR 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 74AVCB164245ZRDR meets industry standards.
7.What is the process for return or replacement of 74AVCB164245ZRDR?
All 74AVCB164245ZRDR units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCB164245ZRDR, 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 74AVCB164245ZRDR part is unused and in its original packaging.
Return procedure for 74AVCB164245ZRDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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