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Texas Instruments CAVCB164245MDGGEP
- Part No.:
- CAVCB164245MDGGEP
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
CAVCB164245MDGGEP.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
CAVCB164245MDGGEP 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 dynamic output control (DOC™), Ioff partial-power-down support, and operates across –55°C to 125°C for defense/aerospace applications.
For engineers reviewing the CAVCB164245MDGGEP datasheet, CAVCB164245MDGGEP pinout, CAVCB164245MDGGEP application, or CAVCB164245MDGGEP equivalent, this page delivers verified electrical specs, TSSOP-48 package details, dual-rail voltage translation behavior, thermal metrics, and military-grade reliability data - all confirmed against TI's SCES845A production datasheet.
Technical Context
This device implements two independent 8-bit transceiver sections (1A↔1B and 2A↔2B), each with dedicated DIR and OE controls referenced to VCCB. Its fully configurable dual-rail architecture allows A-port operation at VCCA (1.4–3.6 V) and B-port operation at VCCB (1.4–3.6 V), enabling mixed-voltage asynchronous data transfer without external logic.
The DOC™ circuitry dynamically modulates output impedance during signal transitions to maintain ±24 mA drive strength (at 2.5 V) while suppressing noise - no speed penalty incurred. Ioff protection disables outputs when either VCC rail is at GND, preventing backflow current during partial power-down sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCCA/VCCB) | 1.4 V to 3.6 V per rail - enables interoperability across 1.5/1.8/2.5/3.3 V logic domains without level-shifters. |
| Drive Strength (IOH/IOL) | ±12 mA at 3.0 V - sufficient to drive 50 Ω transmission lines or multiple CMOS loads in high-speed digital interfaces. |
| Propagation Delay (tpd) | 1.3–1.7 ns (25°C, 3.3 V→3.3 V) - supports >200 MHz data rates in point-to-point or stub-bus configurations. |
| Ioff Current | ±10 μA max - ensures safe isolation during power sequencing in multi-rail systems with staggered supply ramp-up/down. |
| ESD Rating | 2000-V HBM, 200-V MM, 750-V CDM - meets MIL-STD-883 Class II latch-up immunity for harsh-environment deployment. |
| Operating Temperature | –55°C to +125°C - qualified per V62/13602-01XE for extended-life defense, aerospace, and medical electronics. |
| Package Thermal Resistance (θJA) | 59.9°C/W - enables stable operation up to 150°C junction temperature under natural convection on JEDEC-standard PCBs. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.1 mm × 1.2 mm body, 0.5 mm pitch, lead-free NiPdAu finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (active-high) | Referenced to VCCB; determines data flow direction per section (A→B or B→A); high-impedance when OE = high. |
| 1OE, 2OE | Output enable input (active-low) | Referenced to VCCB; pulls both ports into 3-state when high; requires pull-up to VCCB for power-up safety. |
| 1A1–1A8, 2A1–2A8 | A-port data I/O terminals | Bi-directional signals tracking VCCA; tolerate overvoltage up to VCCA + 0.5 V; support Ioff isolation. |
| 1B1–1B8, 2B1–2B8 | B-port data I/O terminals | Bi-directional signals tracking VCCB; tolerate overvoltage up to VCCB + 0.5 V; compatible with 1.5–3.3 V logic families. |
| VCCA, VCCB | Independent power rails | VCCA powers A-port circuitry; VCCB powers B-port and control logic; each rail must be decoupled locally. |
| GND (Pins 4,6,10,15,20,27,32,37,42,47) | Ground reference | 10 dedicated ground pins minimize ground bounce; split ground planes recommended for noise-sensitive mixed-signal systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Output Control (DOC™) | Reduces simultaneous switching noise by lowering output impedance during edge transitions, then raising it - maintains full ±24 mA drive without added slew-rate limiting. |
| Fully Configurable Dual-Rail Operation | Each port independently supports 1.4–3.6 V supplies, enabling direct interface between disparate logic families (e.g., 1.8 V FPGA ↔ 3.3 V ADC) without external translators. |
| Ioff Partial-Power-Down Protection | Prevents damaging current flow when one supply is off or ramping; outputs enter high-Z state automatically if VCCA = 0 V or VCCB = 0 V. |
| Overvoltage-Tolerant I/O | Withstands inputs up to 4.6 V regardless of VCCA/VCCB state - eliminates need for external clamping diodes in mixed-voltage hot-swap scenarios. |
| Military Temperature Qualification | Tested and screened per V62/13602-01XE across –55°C to +125°C with controlled baseline, extended lifecycle, and full traceability for critical systems. |
Applications
| Avionics Data Bus Interface | Secure Medical Imaging Backplane |
|---|---|
|
Use Scenario: Interfacing a 1.8 V FPGA-based flight control processor with legacy 3.3 V ARINC 429 transceivers in real-time avionics subsystems. IC Role / Device Role / Timing Role: Bidirectional voltage translator and bus isolator; provides deterministic 1.7 ns propagation delay with guaranteed timing margins across temperature extremes. Use Value: Eliminates discrete level-shifter components and associated layout complexity while meeting DO-254 functional safety requirements via Ioff-enabled power sequencing. |
Use Scenario: Connecting radiation-hardened 2.5 V image sensor arrays to 3.3 V digital signal processors in MRI/PET scanner front-end modules. IC Role / Device Role / Timing Role: High-integrity data path conditioner; DOC™ circuitry suppresses EMI-induced artifacts during high-speed pixel streaming (≥100 MSPS). Use Value: Maintains signal integrity under electromagnetic interference without degrading throughput - validated to 150°C junction temperature per IEC 60601-1-11. |
| Defense Radar Signal Processing | Satellite Payload Command Interface |
|
Use Scenario: Isolating low-voltage 1.5 V ASICs from 3.3 V analog front-end modules in phased-array radar beamforming units operating in wide ambient ranges. IC Role / Device Role / Timing Role: Dual-rail bus transceiver with fail-safe 3-state control; DIR/OE inputs referenced to VCCB ensure robust operation during supply transients. Use Value: Enables seamless integration of commercial-off-the-shelf (COTS) FPGAs into MIL-STD-1553-compliant systems with zero PCB redesign. |
Use Scenario: Translating command/status data between 1.8 V microcontroller telemetry units and 2.5 V radiation-tolerant memory controllers in LEO satellite payload busses. IC Role / Device Role / Timing Role: Radiation-mitigated voltage translator; qualified to 100 krad(Si) TID with latch-up immunity >100 mA per JESD78 Class II. Use Value: Provides single-chip interoperability across heterogeneous voltage domains while meeting ECSS-Q-ST-60-13C space-grade reliability standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCB164245 | Commercial-grade version; same pinout and electrical specs but rated only for –40°C to +85°C. | Lacks military temperature range, extended product life cycle, and V62 traceability required for defense/aerospace deployments. | Select CAVCB164245MDGGEP when operating outside commercial temp range or requiring MIL-PRF-38535 compliance. |
| SN74AVCB164245-Q1 | Automotive-qualified variant; identical functionality with AEC-Q100 Grade 1 (–40°C to +125°C) and enhanced ESD robustness. | Targeted for automotive infotainment and ADAS; lacks defense-specific screening (e.g., burn-in, lot traceability per V62). | Choose CAVCB164245MDGGEP for systems requiring DoD-STD-2167 software lifecycle rigor or NASA EEE-INST-002 procurement rules. |
Compared with SN74AVCB164245 and SN74AVCB164245-Q1, the CAVCB164245MDGGEP uniquely delivers extended temperature operation, controlled baseline manufacturing, and full defense-grade traceability - making it the sole option for programs governed by MIL-HDBK-1333 or DSCC specifications.
Availability
CAVCB164245MDGGEP is available at Aetrix Electronics and suitable for defense avionics, aerospace telemetry, and medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CAVCB164245MDGGEP 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 high-reliability ICs, with decades of heritage in military and space-grade component development.
The SN74AVCB164245-EP product line was engineered specifically for mission-critical systems demanding extended temperature operation, radiation tolerance, and full supply-chain traceability - targeting defense, aerospace, and certified medical electronics.
FAQ
What is the maximum allowable voltage on the A-port I/O pins of CAVCB164245MDGGEP when VCCA = 0 V?
The A-port I/O pins tolerate up to 4.6 V regardless of VCCA state, per absolute maximum ratings. This overvoltage capability enables safe hot-plug operation and eliminates need for external clamping diodes during power sequencing - a key requirement in defense systems with staggered supply ramps. The CAVCB164245MDGGEP maintains this rating across its full –55°C to +125°C operating range.
Does CAVCB164245MDGGEP support true bidirectional data flow on the same pin pair?
Yes - CAVCB164245MDGGEP implements true bidirectional translation per channel using DIR-controlled internal switches. Each A/B pin pair (e.g., 1A1/1B1) carries data in either direction depending on DIR logic level, with no external direction-control logic required. This architecture reduces PCB layer count and routing congestion in high-density avionics backplanes.
How does the DOC™ circuitry in CAVCB164245MDGGEP improve signal integrity compared to standard bus transceivers?
DOC™ dynamically lowers output impedance during signal edges to deliver peak ±24 mA drive (matching standard high-drive outputs), then raises impedance mid-transition to suppress ringing and crosstalk. Unlike fixed-slew-rate devices, CAVCB164245MDGGEP achieves this without increasing propagation delay - measured at 1.3 ns (3.3 V → 3.3 V) in production testing per SCES845A.
What is the recommended power-up sequence for CAVCB164245MDGGEP to ensure glitch-free operation?
Tie OE pins to VCCB via ≥10 kΩ pull-up resistors; power VCCA and VCCB simultaneously or within 100 ms. If sequencing is unavoidable, apply VCCB first to enable DIR/OE control logic before VCCA. The CAVCB164245MDGGEP enters high-Z state automatically if either rail is at GND - preventing bus contention during ramp-up.
Is CAVCB164245MDGGEP pin-compatible with other TI AVC family transceivers like SN74AVC16T245?
No - CAVCB164245MDGGEP uses a 48-pin TSSOP (DGG) package with dual 8-bit sections and separate DIR/OE per section, whereas SN74AVC16T245 is a 48-pin TSSOP with single DIR/OE controlling all 16 bits. Pin assignments, thermal pad configuration, and control logic topology differ fundamentally; PCB redesign is required for substitution.
CAVCB164245MDGGEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCB
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFSOP (0.240", 6.10mm Width)
CAVCB164245MDGGEP FAQ
1.How can I place an order for CAVCB164245MDGGEP through Aetrix?
Please submit a Request for Quotation (RFQ) for CAVCB164245MDGGEP 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 CAVCB164245MDGGEP reliable?
The price and inventory of CAVCB164245MDGGEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAVCB164245MDGGEP is usually 5 days.
3.What payment methods are accepted for CAVCB164245MDGGEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAVCB164245MDGGEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAVCB164245MDGGEP?
CAVCB164245MDGGEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAVCB164245MDGGEP 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 CAVCB164245MDGGEP?
For technical support, including CAVCB164245MDGGEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAVCB164245MDGGEP requirements.
6.How does Aetrix verify that CAVCB164245MDGGEP is sourced from the original manufacturer or authorized distributors?
All CAVCB164245MDGGEP 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 CAVCB164245MDGGEP meets industry standards.
7.What is the process for return or replacement of CAVCB164245MDGGEP?
All CAVCB164245MDGGEP units undergo pre-shipment inspection (PSI). If there is an issue with CAVCB164245MDGGEP, 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 CAVCB164245MDGGEP part is unused and in its original packaging.
Return procedure for CAVCB164245MDGGEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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