My Inquiry
My Account
Texas Instruments 74AVCB164245GRE4
- Part No.:
- 74AVCB164245GRE4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74AVCB164245GRE4.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,621
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AVCB164245 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 to 3.6-V domains (e.g., 1.8-V ↔ 3.3-V). It features independent A/B ports tracking VCCA and VCCB, ±24-mA dynamic drive capability, Ioff partial-power-down support, and DOC™ circuitry for noise reduction. Used in mixed-voltage system interconnects such as FPGA-to-ASIC data buses.
For engineers reviewing the 74AVCB164245 datasheet, 74AVCB164245 pinout, 74AVCB164245 application, or 74AVCB164245 equivalent, key selection criteria include dual-rail voltage flexibility (1.4–3.6 V per rail), direction-controlled data flow, 3-state isolation timing (ten/tdis ≤ 9.8 ns), and overvoltage-tolerant I/O enabling robust mixed-signal board-level integration.
Technical Context
This device implements asynchronous bidirectional data transfer via DIR-controlled path selection and OE-gated 3-state output enable/disable. Each of its two 8-bit sections operates independently with control inputs (DIR, OE) referenced to VCCB, ensuring consistent logic thresholds across voltage domains.
The DOC™ (Dynamic Output Control) circuitry dynamically modulates output impedance during signal transitions-lowering it initially for strong edge drive (±24 mA), then raising it to suppress ringing and crosstalk. Ioff protection disables outputs when either VCC rail is at GND, preventing back-current during power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA / VCCB Range | 1.4 V to 3.6 V each - enables universal translation among 1.5-V, 1.8-V, 2.5-V, and 3.3-V logic families without external level shifters. |
| IOH / IOL | ±24 mA at 2.5 V - delivers standard-output drive strength while maintaining low-voltage compatibility. |
| tpd (max) | 7.6 ns (VCCA = 2.5 V, VCCB = 2.5 V) - supports >100-MHz data rates in high-speed digital interconnects. |
| Ioff Leakage | ±10 µA at 0 V - ensures safe partial-power-down operation and prevents current backflow during rail ramp-up/down. |
| VIH/VIL (control) | Referenced to VCCB - eliminates need for level-shifted control signals; simplifies interface to B-side controllers. |
| ESD Rating | 2000-V HBM, 200-V MM, 1000-V CDM - meets industrial-grade robustness requirements for board-level handling and operation. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.1 mm × 1.2 mm body, 0.5-mm pitch, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (active-high) | Selects data flow direction per 8-bit section: DIR = L → B→A; DIR = H → A→B. |
| 1OE, 2OE | Output enable input (active-low) | Drives corresponding port into high-impedance state when high; must be pulled up to VCCB for power-up safety. |
| 1A1–1A8, 2A1–2A8 | A-port data I/O (VCCA-referenced) | Connects to lower-voltage domain (e.g., 1.8-V FPGA core); tolerant up to 4.6 V. |
| 1B1–1B8, 2B1–2B8 | B-port data I/O (VCCB-referenced) | Connects to higher-voltage domain (e.g., 3.3-V peripheral bus); tolerant up to 4.6 V. |
| VCCA, VCCB | Independent supply rails | VCCA powers A-port I/O; VCCB powers B-port I/O and all control inputs - enables true dual-voltage operation. |
| GND | Ground reference | Four dedicated ground pins distributed across package for low-inductance return paths and noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Each port operates independently from 1.4 V to 3.6 V - eliminates need for discrete level shifters in heterogeneous SoC interfaces. |
| DOC™ dynamic drive control | Reduces simultaneous switching noise by modulating output impedance mid-transition - improves signal integrity without sacrificing edge speed. |
| Ioff partial-power-down | Prevents damaging back-current when either VCC rail is unpowered - essential for hot-plug and graceful power sequencing in modular systems. |
| Overvoltage-tolerant I/O | Withstands up to 4.6 V on any I/O pin regardless of VCC - allows safe interfacing to legacy 5-V peripherals via series resistors or direct connection in 3.3-V systems. |
| VCCB-referenced controls | DIR/OE thresholds track VCCB - removes requirement for level-shifted control signals and simplifies PCB routing and timing closure. |
Applications
| Industrial PLC Backplane Interface | FPGA-to-ASIC Memory Bridge |
|---|---|
|
Use Scenario: Interfacing a 1.8-V FPGA I/O bank to a 3.3-V industrial I/O module on a programmable logic controller backplane. IC Role / Device Role / Timing Role: Bidirectional voltage translator and bus isolator, controlled by FPGA GPIOs for direction and enable. Use Value: Enables seamless protocol-agnostic data exchange (e.g., parallel status/control bus) without external level-shifting components or timing penalties. |
Use Scenario: Connecting a 2.5-V ASIC memory controller to a 1.5-V LPDDR2 PHY in an embedded vision processor. IC Role / Device Role / Timing Role: Dual-supply transceiver managing address/data strobe translation with sub-8-ns propagation delay. Use Value: Maintains timing margin under worst-case voltage combinations while supporting Ioff for power-gated memory subsystems. |
| Automotive ADAS Sensor Hub | Server Baseboard Management |
|
Use Scenario: Aggregating sensor data from multiple 3.3-V camera modules into a 1.4-V automotive SoC domain within an ADAS domain controller. IC Role / Device Role / Timing Role: Voltage-translating bus buffer with ESD-hardened I/O for harsh automotive environments. Use Value: Meets AEC-Q100 stress requirements via 2000-V HBM rating and supports mixed-voltage debug interfaces without compromising signal fidelity. |
Use Scenario: Isolating BMC (Baseboard Management Controller) I²C/SMBus lines from host CPU voltage domains in a 1U server chassis. IC Role / Device Role / Timing Role: 3-state-enabled bus isolator with fast disable timing (tdis ≤ 7.4 ns) for fault containment. Use Value: Prevents BMC bus lockup during CPU reset cycles and enables hot-swap-safe firmware updates across voltage-isolated subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC16T245RJR | 16-bit, dual-supply, but uses single OE/DIR per 16-bit bank (not dual 8-bit sections); slightly higher ICCA/ICCB leakage. | Lacks independent control per 8-bit segment - less flexible for split-bus architectures requiring granular enable control. | Choose when full 16-bit coherency is required and layout space favors 56-pin VFBGA over TSSOP-48. |
| TXB0108PWR | 8-bit auto-direction-sensing translator; no DIR pin; lower drive (±8 mA); no Ioff or DOC™. | Eliminates direction-control logic but cannot support synchronous bidirectional protocols like shared-memory bus arbitration. | Prefer for simple GPIO/peripheral expansion where direction is predictable and noise immunity is secondary to component count. |
Compared with SN74AVC16T245RJR and TXB0108PWR, the 74AVCB164245 uniquely provides per-octet DIR/OE control, ±24-mA drive, and DOC™ noise suppression - making it optimal for high-fidelity, mixed-voltage, synchronous bus bridging where timing predictability and signal integrity are critical.
Availability
74AVCB164245 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-ASIC memory bridges, automotive ADAS sensor hubs, and server baseboard management systems requiring stable component supply and long-term lifecycle support.
Supply support for 74AVCB164245 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 connectivity technologies, with decades of leadership in logic interface solutions.
The AVCB family was engineered specifically for low-voltage, mixed-domain digital interconnects - targeting high-speed, noise-sensitive applications in communications infrastructure, computing, and automotive electronics where voltage translation reliability is non-negotiable.
FAQ
What voltage ranges does the 74AVCB164245 support on its A and B ports?
The 74AVCB164245 supports independent supply voltages from 1.4 V to 3.6 V on both VCCA (A port) and VCCB (B port), enabling translation between common logic families including 1.5-V, 1.8-V, 2.5-V, and 3.3-V domains. This range is validated per TI's recommended operating conditions and confirmed in the SCES394D datasheet Section 4.
How does the Ioff feature protect the 74AVCB164245 during power sequencing?
The Ioff circuitry in the 74AVCB164245 disables all outputs when either VCCA or VCCB is at GND, limiting leakage current to ±10 µA. This prevents damaging back-current flow through powered-down sections - a critical safeguard during staggered power-up/down in multi-rail systems, as specified in Electrical Characteristics Table (Section 5).
Can the 74AVCB164245 be used without external pull-up resistors on OE pins?
No - the 74AVCB164245 requires OE pins to be tied to VCCB via a pull-up resistor to ensure high-impedance state during power-up. The minimum resistor value depends on the driver's sink capability; TI recommends referencing the "Power-Up/Down Considerations" section of SCES394D for design guidance specific to the 74AVCB164245.
What is the purpose of DOC™ circuitry in the 74AVCB164245?
DOC™ (Dynamic Output Control) in the 74AVCB164245 dynamically adjusts output impedance during signal transitions: lowering it initially for strong edge drive (±24 mA), then raising it to suppress ringing and crosstalk. This maintains fast edge rates while reducing simultaneous switching noise - verified in Figure 1 and described in Section 7 of SCES394D.
Is the 74AVCB164245 pin-compatible with other AVCB-series transceivers?
The 74AVCB164245 is not pin-compatible with other AVCB devices such as SN74AVC16T245 due to differing pinouts (e.g., separate DIR/OE per octet vs. shared control) and package assignments. Its TSSOP-48 (DGG) footprint is unique to this dual-octet configuration, as shown in Terminal Assignments (Section 2) of the datasheet.
74AVCB164245GRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCB
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 48-TFSOP (0.240", 6.10mm Width)
74AVCB164245GRE4 FAQ
1.How can I place an order for 74AVCB164245GRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCB164245GRE4 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 74AVCB164245GRE4 reliable?
The price and inventory of 74AVCB164245GRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCB164245GRE4 is usually 5 days.
3.What payment methods are accepted for 74AVCB164245GRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVCB164245GRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AVCB164245GRE4?
74AVCB164245GRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVCB164245GRE4 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 74AVCB164245GRE4?
For technical support, including 74AVCB164245GRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCB164245GRE4 requirements.
6.How does Aetrix verify that 74AVCB164245GRE4 is sourced from the original manufacturer or authorized distributors?
All 74AVCB164245GRE4 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 74AVCB164245GRE4 meets industry standards.
7.What is the process for return or replacement of 74AVCB164245GRE4?
All 74AVCB164245GRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCB164245GRE4, 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 74AVCB164245GRE4 part is unused and in its original packaging.
Return procedure for 74AVCB164245GRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AVCB164245GRE4 Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
