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Texas Instruments SN74LVT162245DGGR
- Part No.:
- SN74LVT162245DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVT162245DGGR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,299
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Product details
Overview
SN74LVT162245DGGR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 3.3-V and 5-V buses. It features 48-pin TSSOP packaging, 22-Ω series output resistors on A-port pins, and supports hot insertion via Ioff and power-up 3-state logic.
For engineers reviewing the SN74LVT162245DGGR datasheet, SN74LVT162245DGGR pinout, SN74LVT162245DGGR application, or SN74LVT162245DGGR equivalent, key selection criteria include mixed-mode voltage tolerance (5-V inputs with 3.3-V VCC), low ground bounce (<0.8 V at 3.3 V), distributed VCC/GND pin layout for noise reduction, and flow-through architecture for optimized PCB routing.
Technical Context
The SN74LVT162245DGGR implements two independent 8-bit transceiver sections, each controlled by dedicated DIR (direction) and OE (output enable) signals. Its ABT (Advanced BiCMOS Technology) process enables TTL-compatible input thresholds while operating from a 2.7–3.6-V supply.
Direction control is level-sensitive: DIR = LOW enables B→A data flow; DIR = HIGH enables A→B flow; OE = HIGH forces both ports into high-impedance. Input circuits remain active regardless of OE state, requiring defined logic levels on all A/B pins to prevent excess ICCZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| Input Voltage Tolerance | Up to 5.5 V on all I/Os - enables direct interfacing with 5-V systems without level shifters |
| A-Port Output Drive | ±12 mA - includes integrated 22-Ω series resistors to suppress overshoot/undershoot, eliminating external termination |
| B-Port Output Drive | ±24 mA (min) at VCC = 3 V - sufficient for driving multiple TTL loads or longer traces |
| Propagation Delay | 2.2 ns (tPHL, B→A, VCC = 3.3 V) - ensures timing compliance in high-speed 100-MHz bus applications |
| Power-Up 3-State | Active below 1.5 V VCC - prevents bus contention during power ramp-up/down without external circuitry |
| Ioff Current | ±100 µA at VCC = 0 - blocks backflow current during hot insertion, protecting powered-down subsystems |
Pinout & Package
TSSOP-48 package (DGG), 12.6 mm × 6.2 mm × 1.2 mm max height, with gull-wing leads and Q1 pin-1 quadrant orientation per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | LOW = B-port drives A-port; HIGH = A-port drives B-port; determines data flow direction independently per channel |
| 1OE, 2OE | Output enable input (per 8-bit section) | HIGH = disables both A and B outputs to high-impedance; required for bus isolation during idle or conflict avoidance |
| 1A1–1A8, 2A1–2A8 | A-port data I/O (input/output) | 3.3-V logic interface side; A-port outputs include 22-Ω series resistance for clean edge control |
| 1B1–1B8, 2B1–2B8 | B-port data I/O (input/output) | 5-V tolerant side; accepts and drives 5-V signals while powered from 3.3-V VCC |
| VCC, GND | Supply and reference | Distributed across package (12× VCC, 12× GND) - minimizes simultaneous switching noise and improves signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | 5-V input/output compatibility with 3.3-V VCC eliminates need for external level translators in mixed-voltage systems |
| Integrated 22-Ω output resistors (A-port) | Reduces PCB component count and layout area; eliminates trace-length-dependent ringing on high-speed A-bus lines |
| Distributed VCC/GND pin architecture | Minimizes ground bounce (VOLP < 0.8 V) and supply droop during high-frequency switching, critical for stable 100+ MHz operation |
| Flow-through pinout | Input and output pins aligned on opposite sides (e.g., 1A1 ↔ 1B1) - simplifies layer stacking and reduces vias in dense PCB layouts |
| Hot-insertion support | Ioff + power-up 3-state prevents damage and bus conflicts when inserting/removing live cards or modules into backplanes |
Applications
| Industrial Backplane Interface | Memory Expansion Module |
|---|---|
|
Use Scenario: Interfacing a 3.3-V FPGA-based controller to legacy 5-V peripheral slots in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Bidirectional level-translating bus transceiver enabling synchronous data exchange between mismatched voltage domains. Use Value: Eliminates discrete resistor networks and level-shifter ICs, reducing BOM cost by ~$0.32/unit and board space by 28 mm² per interface. |
Use Scenario: Adding DDR SDRAM expansion to a 3.3-V microcontroller system while maintaining compatibility with existing 5-V address/data buffers. IC Role / Device Role / Timing Role: Isolating and translating control/address/data signals between MCU and memory subsystem during read/write cycles. Use Value: Meets tPLH/tPHL ≤ 3.5 ns requirement for 100-MHz bus timing, with guaranteed VOLP < 0.8 V preventing setup/hold violations. |
| Hot-Swappable I/O Carrier | Automotive Diagnostic Gateway |
|
Use Scenario: Enabling live replacement of sensor acquisition modules in rail signaling equipment without powering down the central processing unit. IC Role / Device Role / Timing Role: Bus isolator and voltage translator that enters high-Z state during insertion/removal via Ioff detection. Use Value: Prevents backdrive current >100 µA during hot-swap events, satisfying IEC 61000-4-2 ESD immunity requirements for field-replaceable units. |
Use Scenario: Bridging a 3.3-V CAN FD controller to a 5-V legacy diagnostic port in vehicle telematics units. IC Role / Device Role / Timing Role: Signal-level translator for non-CAN data channels (e.g., UART, JTAG, or firmware update lines) co-located with CAN hardware. Use Value: Supports 5-V tolerant inputs up to 5.5 V, allowing direct connection to automotive 5-V supply rails without additional regulators or clamps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | Lower drive strength (±24 mA B-port, ±12 mA A-port); no integrated 22-Ω resistors; 1.65–3.6-V VCC range | Not suitable for 5-V-tolerant interfaces without external clamping; better for pure 3.3-V or 2.5-V systems | Select when cost sensitivity outweighs 5-V interface needs and board space allows external termination. |
| SN74ALVC162245DGGR | Higher speed (tPLH = 1.9 ns typical); same 5-V tolerance; no integrated series resistors; 1.65–3.6-V VCC | Lacks built-in overshoot suppression - requires careful layout or external RC damping for >150-MHz operation | Prefer for ultra-low-latency applications where signal integrity is managed via layout, not device-level termination. |
Compared with SN74LVC162245DGGR and SN74ALVC162245DGGR, the SN74LVT162245DGGR uniquely combines 5-V I/O tolerance, integrated A-port termination, and robust hot-swap protection - making it the only option among the three qualified for mixed-voltage backplane designs requiring zero external components for signal integrity.
Availability
SN74LVT162245DGGR is available at Aetrix Electronics and suitable for industrial backplanes, memory expansion modules, hot-swappable I/O carriers, and automotive diagnostic gateways requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for SN74LVT162245DGGR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The SN74LVT162245DGGR belongs to TI's Widebus™ family of ABT transceivers, engineered specifically for high-speed, mixed-voltage bus interfacing in mission-critical infrastructure where reliability, noise immunity, and plug-and-play interoperability are mandatory.
FAQ
What voltage levels can the SN74LVT162245DGGR tolerate on its B-port inputs and outputs?
The SN74LVT162245DGGR supports input and output voltages up to 5.5 V on all B-port pins while operating from a 3.3-V VCC supply. This 5-V tolerance enables direct connection to legacy 5-V logic without external level-shifting circuitry, as confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the official datasheet (SCBS714D).
Does the SN74LVT162245DGGR require external series resistors on its A-port outputs?
No, the SN74LVT162245DGGR does not require external series resistors on its A-port outputs because each A-port output includes an integrated 22-Ω series resistor. This feature is explicitly stated in the Features section and reduces signal overshoot/undershoot, eliminating the need for discrete termination components in most PCB layouts.
How does the SN74LVT162245DGGR support hot insertion in live backplane systems?
The SN74LVT162245DGGR supports hot insertion through two complementary features: Ioff circuitry disables outputs when VCC = 0, preventing damaging backflow current; and power-up 3-state logic holds outputs in high-impedance until VCC exceeds 1.5 V. Both mechanisms are validated per JEDEC standards and documented in the Description section of the SN74LVT162245DGGR datasheet.
What is the maximum propagation delay for data transmission from A-port to B-port in the SN74LVT162245DGGR?
The maximum propagation delay for A-port-to-B-port transmission (tPLH or tPHL) in the SN74LVT162245DGGR is 4.6 ns at VCC = 2.7 V and 3.5 ns at VCC = 3.3 V, as specified in the Switching Characteristics table under "B → A" conditions. These values apply across the full operating temperature range (–40°C to 85°C) with CL = 50 pF.
Is the SN74LVT162245DGGR pin-compatible with other packages in the LVT162245 family?
Yes, the SN74LVT162245DGGR in TSSOP-48 (DGG) shares identical pinout and functionality with the SSOP-48 (DL) variant (e.g., SN74LVT162245ADL), as confirmed by TI's ordering information and terminal assignment diagrams. Both packages use the same 48-pin mapping, including DIR, OE, A/B I/O, VCC, and GND positions - enabling drop-in replacement without PCB redesign.
SN74LVT162245DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA; 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVT162245DGGR FAQ
1.How can I place an order for SN74LVT162245DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT162245DGGR 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 SN74LVT162245DGGR reliable?
The price and inventory of SN74LVT162245DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT162245DGGR is usually 5 days.
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SN74LVT162245DGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT162245DGGR 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 SN74LVT162245DGGR?
For technical support, including SN74LVT162245DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT162245DGGR requirements.
6.How does Aetrix verify that SN74LVT162245DGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVT162245DGGR 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 SN74LVT162245DGGR meets industry standards.
7.What is the process for return or replacement of SN74LVT162245DGGR?
All SN74LVT162245DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT162245DGGR, 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 SN74LVT162245DGGR part is unused and in its original packaging.
Return procedure for SN74LVT162245DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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