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Texas Instruments SN74LVCH16245ADGVR
- Part No.:
- SN74LVCH16245ADGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVCH16245ADGVR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,306
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Product details
Overview
SN74LVCH16245ADGVR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 1.65-V to 3.6-V buses. It supports mixed-mode signal operation (5.5-V-tolerant inputs at 3.3-V VCC), delivers 4 ns max propagation delay at 3.3 V, and features Ioff for live insertion and back-drive protection - used in tablet baseband interconnects and industrial controller I/O expansion.
For engineers reviewing the SN74LVCH16245ADGVR datasheet, SN74LVCH16245ADGVR pinout, SN74LVCH16245ADGVR application, or SN74LVCH16245ADGVR equivalent, key selection criteria include its 48-pin TVSOP package, dual-direction control per octet (1DIR/2DIR), independent output enables (1OE/2OE), bus-hold circuitry eliminating external resistors, and guaranteed 5.5-V input tolerance across full VCC range.
Technical Context
This device implements two independent 8-bit transceiver sections, each with dedicated direction (DIR) and output-enable (OE) controls. Each section operates asynchronously, allowing simultaneous A→B and B→A data flow when configured with opposing DIR states and active OE signals.
Its bus-hold circuitry actively maintains valid logic levels on undriven A- and B-port inputs without external biasing, while the Ioff feature ensures <10 µA off-state leakage when VCC = 0 V - critical for hot-swap and partial-power-down systems. Input voltage tolerance up to 5.5 V enables direct interfacing with legacy 5-V logic in mixed-supply environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports single-supply operation across LVC-family voltage domains |
| Max Propagation Delay | 4 ns at 3.3 V - enables high-speed inter-bus communication up to ~200 MHz toggle rate |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to 5-V microcontrollers or peripherals without level shifters |
| Ioff Leakage | <10 µA at VCC = 0 V - prevents back-current during power sequencing or hot-plug events |
| Bus-Hold Current | ±45 µA at 3 V - sustains stable logic state on floating inputs without external pull resistors |
| Output Drive Strength | ±24 mA at 3 V - drives standard CMOS loads and moderate PCB trace capacitance |
| ESD Rating | 2000-V HBM - meets industrial-grade handling requirements per JESD22-A114 |
Pinout & Package
SN74LVCH16245ADGVR uses a 48-pin Thin Very Small Outline Package (TVSOP, DGV), body size 9.70 mm × 4.40 mm, with 0.4-mm lead pitch and exposed thermal pad (not electrically connected). Pin 1 is located at bottom-left corner marked by beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-high logic selects data flow direction per octet: DIR = H → A→B; DIR = L → B→A |
| 1OE, 2OE | Output enable input | Active-low logic disables respective octet outputs into high-impedance state for bus isolation |
| 1A1–1A8, 2A1–2A8 | A-port I/O terminals | Octet A data interface; internally bus-held when undriven; 5.5-V tolerant |
| 1B1–1B8, 2B1–2B8 | B-port I/O terminals | Octet B data interface; identical electrical specs to A-port; fully bidirectional |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce switching noise and improve PSRR across wide frequency range |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths for all I/O and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit transceivers | Enables flexible system partitioning - e.g., one octet for CPU-to-peripheral, another for peripheral-to-FPGA |
| Mixed-mode signal operation | 5.5-V-tolerant inputs allow seamless integration of 3.3-V transceiver with 5-V legacy components |
| Integrated bus-hold circuitry | Eliminates need for 10-kΩ external pullup/pulldown resistors on unused data lines, reducing BOM count and board area |
| Ioff partial-power-down support | Prevents current backflow when VCC is off, enabling safe live insertion in modular backplane systems |
| Low ground bounce (VOLP < 0.8 V) | Minimizes noise coupling into adjacent signal nets during simultaneous switching of multiple outputs |
Applications
| Industrial PLC Backplane Interface | Tablet SoC-to-Peripheral Bridge |
|---|---|
Use Scenario: Isolating and translating control signals between 3.3-V ARM-based main processor and 5-V I/O expansion modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional level-translating bus transceiver managing parallel address/data/control bus handshaking. Use Value: Eliminates discrete level shifters and pull resistors while maintaining sub-5-ns timing integrity across temperature range. |
Use Scenario: Interfacing application processor GPIO banks to 5-V display timing controller and touch controller in consumer tablets. IC Role / Device Role / Timing Role: Dual-octet transceiver providing independent direction control for separate command and status data lanes. Use Value: Enables concurrent read/write operations via separate DIR/OE controls, improving display update throughput. |
| Wearable Health Sensor Hub | Test Equipment Digital I/O Module |
Use Scenario: Aggregating sensor data from multiple 3.3-V analog front-ends and routing to low-power MCU via shared parallel bus. IC Role / Device Role / Timing Role: Low-voltage (1.65 V min) transceiver supporting battery-powered operation while retaining 5-V compatibility for future upgrades. Use Value: Bus-hold function prevents floating inputs during sensor sleep cycles, avoiding spurious interrupts and power spikes. |
Use Scenario: Providing configurable digital stimulus/response channels in automated test equipment with mixed 3.3-V and 5-V instrument interfaces. IC Role / Device Role / Timing Role: High-speed (4 ns tpd), latch-up-resistant (250 mA) transceiver enabling precise timing-critical pattern generation. Use Value: Ioff and ESD robustness ensure reliable operation during frequent probe contact and reconfiguration events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGVR | No bus-hold circuitry; identical pinout, speed, and voltage specs | Requires external pull resistors on unused lines; less suitable for systems with intermittent signal sources | Select when cost sensitivity outweighs need for bus-hold and design simplicity is secondary |
| SN74AVC16245DGVR | Lower VCC range (1.2 V–3.6 V); higher speed (2.8 ns tpd at 1.8 V); no 5.5-V input tolerance | Better for ultra-low-voltage SoC interconnects but incompatible with 5-V peripherals | Select only for 1.2–1.8-V systems where 5-V tolerance is unnecessary and speed is critical |
Compared with SN74LVC16245ADGVR, SN74LVCH16245ADGVR adds bus-hold for robustness in dynamic systems; compared with SN74AVC16245DGVR, it trades some speed for broader voltage interoperability and legacy compatibility.
Availability
SN74LVCH16245ADGVR is available at Aetrix Electronics and suitable for industrial PLC backplanes, tablet SoC interconnects, and wearable sensor hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVCH16245ADGVR 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 delivering analog and embedded processing solutions, with leadership in logic, power management, and signal chain technologies since 1930.
SN74LVCH16245ADGVR belongs to the Widebus™ family of advanced CMOS bus interface devices, engineered specifically for high-reliability, mixed-voltage data routing in industrial automation, computing, and portable electronics.
FAQ
What is the maximum operating temperature for SN74LVCH16245ADGVR?
The SN74LVCH16245ADGVR is rated for continuous operation from –40°C to +125°C ambient temperature, validated per JEDEC JESD78 reliability testing and supported by thermal metrics including RθJA = 80.2°C/W for the TVSOP package. This makes SN74LVCH16245ADGVR suitable for under-hood automotive modules and industrial control cabinets where thermal margins are constrained.
Does SN74LVCH16245ADGVR require external pull-up resistors on its data lines?
No, SN74LVCH16245ADGVR integrates active bus-hold circuitry on all A- and B-port inputs, which maintains valid logic states on undriven or floating lines without external pull-up or pull-down resistors. Using external resistors with SN74LVCH16245ADGVR is not recommended, as they may interfere with bus-hold functionality and increase power consumption unnecessarily.
Can SN74LVCH16245ADGVR interface directly with 5-V logic devices?
Yes, SN74LVCH16245ADGVR accepts input voltages up to 5.5 V regardless of VCC level (1.65 V to 3.6 V), enabling direct connection to standard 5-V TTL or CMOS outputs without level-shifting circuitry. Its outputs swing rail-to-rail within the VCC domain, so interfacing with 5-V receivers requires external translation unless those receivers are 3.3-V tolerant.
What is the purpose of the Ioff feature in SN74LVCH16245ADGVR?
The Ioff feature in SN74LVCH16245ADGVR disables output drivers and limits off-state leakage to <10 µA when VCC = 0 V, preventing damaging current backflow from live system buses into a powered-down device. This supports safe live insertion, partial-power-down modes, and hot-swap capability - essential in modular test equipment and field-upgradeable industrial systems using SN74LVCH16245ADGVR.
How many VCC and GND pins does SN74LVCH16245ADGVR have in its TVSOP package?
SN74LVCH16245ADGVR in the TVSOP (DGV) package has four dedicated VCC pins (7, 18, 31, 42) and eight GND pins (4, 10, 15, 21, 28, 34, 39, 45), strategically distributed to minimize power delivery impedance and reduce simultaneous switching noise across the 16-bit data path.
SN74LVCH16245ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 48-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74LVCH16245ADGVR FAQ
1.How can I place an order for SN74LVCH16245ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH16245ADGVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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6.How does Aetrix verify that SN74LVCH16245ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74LVCH16245ADGVR 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 SN74LVCH16245ADGVR meets industry standards.
7.What is the process for return or replacement of SN74LVCH16245ADGVR?
All SN74LVCH16245ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16245ADGVR, 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 SN74LVCH16245ADGVR part is unused and in its original packaging.
Return procedure for SN74LVCH16245ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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