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Texas Instruments SN74AHCT16245DGVR
- Part No.:
- SN74AHCT16245DGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHCT16245DGVR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,765
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Product details
Overview
SN74AHCT16245DGVR from Texas Instruments is a 16-bit dual-octal noninverting 3-state bus transceiver in TVSOP-48 package, operating at 4.5–5.5 V, with 8 ns typical propagation delay (CL = 15 pF), ±8 mA output drive, and TTL-compatible inputs (VIH = 2 V, VIL = 0.8 V). It enables synchronous bidirectional data transfer between 5 V buses in telecom infrastructure and industrial control backplanes.
For engineers reviewing the SN74AHCT16245DGVR datasheet, SN74AHCT16245DGVR pinout, SN74AHCT16245DGVR application, or SN74AHCT16245DGVR equivalent, key selection criteria include its dual-directional 3-state control architecture, flow-through pinout for PCB routing optimization, -40°C to +125°C industrial temperature range, and compatibility with mixed-voltage 3.3 V/5 V system interfacing where up-translation and low-output ringing are required.
Technical Context
The SN74AHCT16245DGVR implements two independent 8-bit transceivers sharing common direction (DIR) and output-enable (OE) controls per side - 1DIR/1OE for A1–A8 ↔ B1–B8 and 2DIR/2OE for A9–A16 ↔ B9–B16. Its CMOS design features balanced output drive, slow edge rates to suppress overshoot/undershoot, and input overvoltage tolerance up to 5.5 V regardless of VCC.
Each I/O channel supports high-impedance tri-state operation when OE is high, and direction-controlled data flow (A→B or B→A) based on DIR logic level. The device uses distributed VCC/GND pins across the 48-pin TVSOP package to minimize switching noise and supports up-translation from 3.3 V logic to 5 V buses without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation across industrial 5 V rail tolerances and brown-out immunity. |
| Propagation Delay | 8.5 ns max (CL = 15 pF) - Enables reliable timing in high-speed parallel bus systems up to ~60 MHz. |
| Output Drive | ±8 mA (IOH/IOL) - Sufficient for driving standard 50 Ω transmission lines or multiple TTL loads without external buffers. |
| Input Thresholds | VIH = 2 V, VIL = 0.8 V - Guarantees robust recognition of 3.3 V logic levels in mixed-voltage designs. |
| Operating Temperature | –40°C to +125°C - Qualified for under-hood automotive, motor drive, and industrial embedded environments. |
| ESD Rating | HBM: 1500 V - Meets IEC 61000-4-2 Level 2 for board-level ESD resilience in field-deployed equipment. |
| Power Dissipation | Cpd = 17 pF - Low dynamic power consumption supports thermally constrained PCB layouts. |
Pinout & Package
SN74AHCT16245DGVR is housed in a 48-pin Thin Very Small Outline Package (TVSOP), body size 9.70 mm × 4.40 mm, 1.2 mm max height, JEDEC MO-153 compliant. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Selects data flow direction per 8-bit bank: DIR = L → B→A; DIR = H → A→B. |
| 1OE, 2OE | Output Enable Input | Active-low enable: OE = L → transceiver enabled; OE = H → all outputs high-Z. |
| A1–A8, A9–A16 | Bus A I/O Port | 8-bit bidirectional data interface connected to microcontroller or ASIC local bus. |
| B1–B8, B9–B16 | Bus B I/O Port | 8-bit bidirectional data interface connected to peripheral or memory expansion bus. |
| VCC (Pins 7,18,31,42) | Power Supply | Distributed 5 V supply pins reduce simultaneous switching noise and improve PDN stability. |
| GND (Pins 4,10,15,21,28,34,39,45) | Ground Reference | Eight ground pins provide low-inductance return paths for all I/O channels and internal logic. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Voltage Compatible Inputs | Accepts 3.3 V logic thresholds (VIH = 2 V, VIL = 0.8 V) while operating at 5 V, enabling direct 3.3 V-to-5 V up-translation. |
| Flow-Through Architecture | Input and output pins arranged on opposite sides of the package to eliminate layer jumps and minimize trace crossovers on 2-layer PCBs. |
| Distributed Power/Ground Pins | Four VCC and eight GND pins reduce ground bounce and supply ripple during high-speed bus toggling. |
| Slow Edge Rate Control | Intentionally limited dV/dt reduces output ringing and EMI in unterminated or lightly loaded parallel buses. |
| Latch-Up Immunity | Exceeds 250 mA per JESD17 - prevents destructive latch-up during transient overvoltage or hot-insertion events. |
Applications
| Telecom Backplane Interface | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Bidirectional data exchange between FPGA-based line card controller and legacy 5 V peripheral modules in carrier-grade access equipment. IC Role / Device Role / Timing Role: Bus transceiver managing synchronous 16-bit parallel communication with precise direction and enable timing synchronized to system clock domain. Use Value: Flow-through pinout simplifies routing across dense backplane connectors; -40°C to +125°C rating ensures reliability in fanless outdoor cabinets. |
Use Scenario: Isolating and translating control signals between 3.3 V ARM-based CPU module and 5 V discrete I/O terminal blocks in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting transceiver enabling safe voltage-domain bridging without external biasing or resistors. Use Value: TTL-compatible inputs accept 3.3 V GPIO outputs directly; 3-state outputs prevent bus contention during firmware updates or hot-swap events. |
| Motor Drive Controller Bus | Medical Imaging Data Link |
Use Scenario: Interfacing DSP-based motion controller with 5 V encoder feedback and PWM driver ICs in servo amplifier modules. IC Role / Device Role / Timing Role: Dual-octal transceiver providing separate A→B and B→A paths for command and status data with independent direction control. Use Value: Distributed VCC/GND pins suppress noise coupling into sensitive analog feedback paths; slow edges prevent false triggering of current-sense comparators. |
Use Scenario: Connecting high-resolution image sensor array (3.3 V LVCMOS) to 5 V FPGA-based frame grabber in portable ultrasound devices. IC Role / Device Role / Timing Role: 16-bit bidirectional data bridge supporting burst-mode pixel transfers with minimal skew between lanes. Use Value: 8.5 ns max tPLH/tPHL ensures setup/hold compliance at 60 MHz pixel clocks; TVSOP-48 footprint saves space in compact handheld enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT16245DGGR | TSSOP-48 package (12.5 mm × 6.1 mm); 0.65 mm pitch; slightly higher RθJA (79.3°C/W vs. 79.3°C/W for DGV). | Same electrical specs but larger footprint; preferred where thermal margin > PCB area constraint. | Select DGGR if board layout allows wider package and requires proven long-term availability in TSSOP. |
| SN74LVC16245ADGGR | 3.3 V only supply (1.65–3.6 V); lower drive (±24 mA); 3.3 V I/O compatible; no TTL input thresholds. | Not suitable for 5 V bus interfacing; requires level-shifting for mixed-voltage use. | Choose LVC variant only for native 3.3 V systems needing higher speed (3.5 ns tPD) and lower power. |
Compared with SN74AHCT16245DGVR, the DGGR offers identical functionality in a mechanically distinct TSSOP package with greater thermal resistance, while the LVC16245A operates at lower voltage and lacks TTL input compatibility - making SN74AHCT16245DGVR the sole choice for robust 5 V bus translation with industrial temperature support.
Availability
SN74AHCT16245DGVR is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLC I/O expansion, and motor drive controller bus applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AHCT16245DGVR 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 expertise in industrial-grade logic and interface solutions.
The SN74AHCT16245DGVR belongs to TI's Widebus™ family of high-speed bus interface ICs, designed specifically for noise-immune, flow-through-layout-optimized bidirectional data transfer in demanding industrial and communications systems.
FAQ
What is the maximum operating temperature for SN74AHCT16245DGVR?
The SN74AHCT16245DGVR is rated for continuous operation from –40°C to +125°C ambient temperature, meeting industrial and extended-temperature requirements for applications such as motor drives and outdoor telecom equipment. This rating is verified per TI's Recommended Operating Conditions table and applies across the full 4.5–5.5 V supply range.
Does SN74AHCT16245DGVR support 3.3 V logic inputs?
Yes, SN74AHCT16245DGVR supports 3.3 V logic inputs directly due to its TTL-compatible input thresholds: VIH = 2.0 V (min) and VIL = 0.8 V (max). This allows reliable interfacing with 3.3 V microcontrollers and FPGAs while operating at 5 V, enabling seamless up-translation without external level shifters.
How many ground pins does SN74AHCT16245DGVR have?
SN74AHCT16245DGVR has eight dedicated GND pins (pins 4, 10, 15, 21, 28, 34, 39, and 45) distributed across the TVSOP-48 package. This multi-ground configuration minimizes ground loop inductance and improves noise immunity during high-speed bus switching.
Can SN74AHCT16245DGVR be used for unidirectional data transfer?
Yes, SN74AHCT16245DGVR can operate unidirectionally by fixing the DIR input to a constant logic level (e.g., DIR = H for A→B only) and using OE to enable/disable the path. Its dual-octal architecture also allows independent control of each 8-bit section for mixed-direction configurations.
What is the recommended bypass capacitor for SN74AHCT16245DGVR?
TI recommends a 0.01 µF to 0.022 µF ceramic capacitor placed as close as possible to each VCC pin (pins 7, 18, 31, 42) of SN74AHCT16245DGVR. For optimal high-frequency noise suppression, pairing with a 0.1 µF bulk capacitor near the device is advised - consistent with TI's Power Supply Recommendations section.
SN74AHCT16245DGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- 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:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74AHCT16245DGVR FAQ
1.How can I place an order for SN74AHCT16245DGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHCT16245DGVR 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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The price and inventory of SN74AHCT16245DGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHCT16245DGVR is usually 5 days.
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Once your SN74AHCT16245DGVR 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 SN74AHCT16245DGVR?
For technical support, including SN74AHCT16245DGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHCT16245DGVR requirements.
6.How does Aetrix verify that SN74AHCT16245DGVR is sourced from the original manufacturer or authorized distributors?
All SN74AHCT16245DGVR 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 SN74AHCT16245DGVR meets industry standards.
7.What is the process for return or replacement of SN74AHCT16245DGVR?
All SN74AHCT16245DGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHCT16245DGVR, 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 SN74AHCT16245DGVR part is unused and in its original packaging.
Return procedure for SN74AHCT16245DGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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