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Texas Instruments 74LVTH162245ZRDR
- Part No.:
- 74LVTH162245ZRDR
- Manufacturer:
- Texas Instruments
- Package:
- 54-TFBGA
- Datasheet:
-
74LVTH162245ZRDR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 54BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
74LVTH162245ZRDR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for mixed-mode signal operation between 3.3-V and 5-V systems. It features 22-Ω series resistors on A-port outputs, bus-hold circuitry on all data inputs, and Ioff support for hot insertion. It operates across –40°C to 85°C and is packaged in a 54-ball ZRD (Pb-free) VFBGA.
For engineers reviewing the 74LVTH162245ZRDR datasheet, 74LVTH162245ZRDR pinout, 74LVTH162245ZRDR application, or 74LVTH162245ZRDR equivalent, this device serves as a voltage-level translating bidirectional bus interface in industrial backplanes, FPGA-to-ASIC interconnects, and legacy 5-V peripheral bridging-where low ground bounce (<0.8 V), distributed power/ground pins, and flow-through architecture reduce PCB layout complexity.
Technical Context
The 74LVTH162245ZRDR implements dual independent 8-bit transceiver channels, each controlled by dedicated DIR and OE inputs. Its ABT (Advanced BiCMOS Technology) architecture enables TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2 V) while operating at 3.3-V VCC, supporting unregulated battery supply down to 2.7 V.
It integrates bus-hold circuitry (±75 µA hold current at 3.6 V) eliminating external pull resistors, and features Ioff protection that disables outputs during power-down to prevent backflow current. Power-up 3-state ensures high-impedance outputs during VCC ramping from 0–1.5 V, with OE pullup recommended above 1.5 V for guaranteed isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports wide-input unregulated battery rails without external regulation |
| Input Voltage (VI) | Up to 5.5 V - enables direct interfacing with 5-V logic without level shifters |
| A-Port Output Drive | ±12 mA - sufficient for driving 50-pF loads with <3.9 ns propagation delay (tPHL @ 3.3 V) |
| B-Port Output Drive | ±64 mA - higher sink capability for driving heavier capacitive or resistive bus loads |
| Bus-Hold Current | ±75 µA min - actively holds floating inputs at valid logic levels, removing need for external biasing |
| IOFF Leakage | ±100 µA max @ VCC = 0 - prevents damaging back-current during hot-swap or partial power-down |
| Propagation Delay | tPLH/tPHL ≤ 4.6 ns @ VCC = 3.3 V, CL = 50 pF - meets timing-critical backplane and memory interface requirements |
Pinout & Package
74LVTH162245ZRDR is housed in a 54-ball ZRD (Pb-free) Very Thin Fine-Pitch Ball Grid Array (VFBGA) package, measuring 7.0 mm × 4.5 mm × 0.9 mm (max height), with 0.5-mm ball pitch and Q1 pin-1 quadrant orientation per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control inputs | Select data flow direction per 8-bit channel: LOW = B→A, HIGH = A→B |
| 1OE, 2OE | Output-enable inputs | Active LOW; disable both ports into high-impedance state for bus isolation |
| 1A1–1A8, 2A1–2A8 | A-side data I/Os | 3.3-V tolerant inputs; outputs include integrated 22-Ω series resistors to suppress ringing |
| 1B1–1B8, 2B1–2B8 | B-side data I/Os | 5-V tolerant inputs/outputs; higher drive strength (±64 mA) for legacy bus loading |
| VCC, GND | Power and ground | Distributed across package (12 VCC + 12 GND balls) to minimize simultaneous switching noise |
| NC | No-connect balls | Internally unconnected; must be left unpopulated or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | 3.3-V VCC with 5-V-tolerant I/Os enables seamless bridging between modern low-voltage logic and legacy 5-V subsystems |
| Integrated 22-Ω A-port series resistors | Eliminates need for 16 external termination resistors, reducing BOM count and PCB area in high-speed routing |
| Bus-hold on all data inputs | Prevents floating inputs from drifting to indeterminate states-no external pullup/pulldown resistors required |
| Ioff and power-up 3-state | Guarantees high-impedance outputs during power sequencing, enabling safe hot-plug operation in modular systems |
| Flow-through pinout architecture | Input and output pins aligned on opposite sides of package to simplify layer stacking and minimize trace crossovers |
Applications
| Industrial Backplane Interface | FPGA-to-ASIC Data Bridge |
|---|---|
Use Scenario: Interfacing a 3.3-V FPGA I/O bank with a 5-V industrial controller bus over a 20-cm backplane trace. IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing data flow direction via DIR and isolating buses via OE during configuration handshaking. Use Value: Eliminates discrete level shifters and termination resistors while maintaining <4.6 ns propagation delay and <0.8 V ground bounce under full load. |
Use Scenario: Connecting a Xilinx Artix-7 FPGA's LVCMOS33 I/O to a legacy ASIC with 5-V TTL signaling in an automated test equipment (ATE) system. IC Role / Device Role / Timing Role: Dual-channel transceiver providing isolated A→B and B→A paths with independent DIR/OE control per channel for parallel diagnostics and configuration. Use Value: Bus-hold circuitry maintains valid logic states on unused ASIC inputs during FPGA reconfiguration, preventing spurious resets or latch-ups. |
| Hot-Swappable Module Interface | Memory Expansion Subsystem |
Use Scenario: Enabling live insertion of a 3.3-V compute module into a powered 5-V carrier board in telecom line cards. IC Role / Device Role / Timing Role: Isolation buffer using Ioff and power-up 3-state to block backfeed current and ensure high-Z during VCC ramp-up. Use Value: Prevents damage to powered backplane traces and eliminates need for complex power-sequencing controllers or mechanical interlocks. |
Use Scenario: Expanding SRAM capacity on a microcontroller-based data logger by adding a 5-V asynchronous SRAM chip to a 3.3-V bus. IC Role / Device Role / Timing Role: Transceiver configured as 16-bit unidirectional driver (A→B) during write cycles and high-Z during reads to avoid contention. Use Value: Integrated 22-Ω A-port resistors dampen edge overshoot on 10-cm address/data traces, meeting ±0.5 V VOL/VOL margin at 64 mA sink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH162245DLR | SSOP-48 package (15.4 mm × 7.5 mm); no integrated ball-grid array; leaded, RoHS-compliant NIPDAU finish | Suitable for prototyping or low-volume boards where manual soldering or socketing is preferred over fine-pitch BGA reflow | Choose DLR for through-hole compatibility, thermal testing flexibility, or when BGA assembly infrastructure is unavailable |
| 74LVTH162245DGGR | TSSOP-48 package (12.5 mm × 6.1 mm); thinner profile (1.2 mm max); same electrical specs and pinout as ZRDR but different mechanical footprint | Better suited for space-constrained consumer electronics where ZRD's 7.0 × 4.5 mm area is insufficient but BGA rework is undesirable | Choose DGGR when board thickness budget is tight and fine-pitch reflow is available, but BGA inspection/rework is not feasible |
Compared with 74LVTH162245ZRDR, the DLR offers easier hand-soldering and socket support at the cost of larger PCB area and lower I/O density, while the DGGR provides intermediate size and profile with identical signal integrity-making ZRDR optimal only when ultra-compact BGA integration and thermal performance (θJA = 36°C/W) are mandatory.
Availability
74LVTH162245ZRDR is available at Aetrix Electronics and suitable for industrial backplanes, FPGA-to-ASIC bridges, hot-swappable modules, and memory expansion subsystems requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.
Supply support for 74LVTH162245ZRDR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
The 74LVTH162245ZRDR belongs to TI's Widebus™ family of ABT transceivers, engineered specifically for robust voltage-level translation and noise-immune bus interfacing in mixed-voltage industrial and telecom infrastructure.
FAQ
What is the maximum operating temperature range for the 74LVTH162245ZRDR?
The 74LVTH162245ZRDR is rated for operation from –40°C to +85°C ambient temperature. This commercial-grade specification aligns with its intended use in industrial control panels, network equipment, and embedded computing platforms where extended thermal stability is required without military or automotive qualification.
Does the 74LVTH162245ZRDR support hot insertion, and how is it implemented?
Yes, the 74LVTH162245ZRDR supports hot insertion via two complementary mechanisms: Ioff circuitry disables outputs when VCC = 0 V to prevent back-current, and power-up 3-state forces outputs into high-impedance during VCC ramp-up from 0–1.5 V. For guaranteed isolation above 1.5 V, OE must be pulled to VCC through an external resistor.
Can the 74LVTH162245ZRDR interface directly with 5-V logic while powered at 3.3 V?
Yes-the 74LVTH162245ZRDR accepts 5-V input signals on both A and B ports while operating at VCC = 3.3 V, and drives 5-V-tolerant outputs on the B port. Its VIH = 2 V and VIL = 0.8 V thresholds ensure reliable TTL-level recognition, and B-port outputs sustain ±64 mA at VO = 0.55 V (IOL = 64 mA, VCC = 3.6 V).
What is the purpose of the 22-Ω series resistors on the A-port outputs of the 74LVTH162245ZRDR?
The 22-Ω series resistors integrated into each A-port output of the 74LVTH162245ZRDR dampen signal edge overshoot and undershoot on PCB traces, reducing EMI and improving signal integrity without requiring external termination components. They are optimized for typical FR-4 trace impedances and eliminate 16 discrete resistors from the BOM.
How does bus-hold functionality work on the 74LVTH162245ZRDR, and when should external pull resistors be avoided?
The 74LVTH162245ZRDR includes active bus-hold circuitry on all data inputs, drawing ±75 µA to maintain a valid logic state when inputs float. External pullup or pulldown resistors must not be used with enabled bus-hold, as they conflict with internal biasing and may cause excessive current or metastability.
74LVTH162245ZRDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 54-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 54-BGA Microstar Junior (8x5.5)
74LVTH162245ZRDR FAQ
1.How can I place an order for 74LVTH162245ZRDR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH162245ZRDR 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 74LVTH162245ZRDR reliable?
The price and inventory of 74LVTH162245ZRDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH162245ZRDR is usually 5 days.
3.What payment methods are accepted for 74LVTH162245ZRDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH162245ZRDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH162245ZRDR?
74LVTH162245ZRDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH162245ZRDR 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 74LVTH162245ZRDR?
For technical support, including 74LVTH162245ZRDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH162245ZRDR requirements.
6.How does Aetrix verify that 74LVTH162245ZRDR is sourced from the original manufacturer or authorized distributors?
All 74LVTH162245ZRDR 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 74LVTH162245ZRDR meets industry standards.
7.What is the process for return or replacement of 74LVTH162245ZRDR?
All 74LVTH162245ZRDR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH162245ZRDR, 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 74LVTH162245ZRDR part is unused and in its original packaging.
Return procedure for 74LVTH162245ZRDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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