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onsemi 74LVT162245MTD
- Part No.:
- 74LVT162245MTD
- Manufacturer:
- onsemi
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVT162245MTD.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,896
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Product details
Overview
74LVT162245 from onsemi (formerly Fairchild) is a low-voltage 16-bit non-inverting bidirectional transceiver with 3-STATE outputs, designed for bus-oriented applications operating at 3.3 V VCC while interfacing to 5 V systems. It features byte-level control (two independent 8-bit sections), 25 Ω series resistance on A-port outputs to suppress line noise, and supports ±12 mA drive on A port and ±32/64 mA on B port.
For engineers reviewing the 74LVT162245 datasheet, pinout, applications, or equivalent options, this device is selected for high-speed memory address/clock bus isolation, TTL-compatible level translation, and noise-sensitive bidirectional data routing in industrial and embedded computing platforms.
Technical Context
The 74LVT162245 implements two independent 8-bit bidirectional buffer sections, each controlled by dedicated OEn and T/Rn inputs - enabling selective direction control per byte without external logic. Its BiCMOS fabrication delivers ABT-class speed (tPLH/tPHL ≤ 4.6 ns at 3.3 V) with low power dissipation (ICCZ = 0.19 mA in 3-STATE).
A-port outputs integrate 25 Ω equivalent series resistance in both HIGH and LOW states, eliminating need for external termination and reducing overshoot/undershoot in stub-loaded buses. B-port outputs lack internal series resistance but provide higher drive strength (64 mA sink), making them suitable for driving heavier loads or longer traces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - ensures stable operation in 3.3 V systems with ±0.3 V tolerance; not rated for 5 V supply. |
| A-Port Output Drive | ±12 mA - sufficient for short-to-medium trace lengths with built-in 25 Ω damping; reduces need for external series resistors. |
| B-Port Output Drive | 32 mA source / 64 mA sink - enables direct interface to legacy 5 V TTL loads without level shifters. |
| Propagation Delay (B Port) | ≤ 3.9 ns max at 2.7 V - supports >200 MHz bus toggle rates in point-to-point or lightly loaded configurations. |
| 3-STATE Enable/Disable Time | tPZH/tPHZ ≤ 6.3 ns - minimizes bus contention window during direction switching in synchronous protocols. |
| Input Voltage Range | 0 V to 5.5 V - allows direct connection to 5 V logic inputs without clamping diodes or external protection. |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial ambient environments without derating. |
Pinout & Package
74LVT162245MTD is housed in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm lead pitch. The package supports fine-pitch surface-mount assembly and thermal performance suitable for moderate-power bus interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Side-A bidirectional I/O | Connects to local bus or memory subsystem; includes 25 Ω series resistance on output path for EMI reduction. |
| B0–B15 | Side-B bidirectional I/O | Interfaces to external 5 V or 3.3 V bus; higher drive strength supports fanout to multiple TTL inputs. |
| OE1, OE2 | Active-low output enable (per byte) | Disables both A and B ports of respective byte into high-impedance state; enables partial bus isolation. |
| T/R1, T/R2 | Transmit/Receive direction control (per byte) | Controls data flow direction: LOW = B→A, HIGH = A→B; independent per 8-bit segment. |
| VCC | Power supply | 3.3 V nominal supply; decoupling required at each VCC pin due to distributed power pins (pins 24, 48). |
| GND | Ground reference | Multiple GND pins (pins 12, 25, 37, 47) reduce ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| 25 Ω series resistance on A-port outputs | Eliminates need for discrete 22–33 Ω series termination resistors on A-side traces, simplifying layout and reducing BOM count. |
| Byte-wise control architecture | Enables independent direction and enable control for upper/lower 8-bit segments - supports split-bus protocols like PCI-X or custom memory-mapped peripherals. |
| 5 V-tolerant inputs | Accepts 0–5.5 V input signals directly, allowing seamless integration into mixed-voltage systems without level translators. |
| Live insertion/extraction support | Power-up/down high-impedance behavior prevents bus glitches during hot-swap events in modular backplane or carrier-card designs. |
| Latch-up immunity & ESD robustness | Exceeds 500 mA latch-up current; meets 2000 V HBM ESD - suitable for manufacturing handling and field-replaceable modules. |
Applications
| Memory Address Bus Driver | PCI/ISA Local Bus Transceiver |
|---|---|
|
Use Scenario: Driving 3.3 V CPU address lines to legacy 5 V SRAM or flash memory arrays with stubbed routing. IC Role / Device Role / Timing Role: Bidirectional address transceiver with direction-controlled A→B flow during write cycles and B→A flow during read cycles. Use Value: Built-in 25 Ω A-port resistance suppresses ringing on unterminated address stubs; B-port 64 mA sink drives TTL inputs reliably. |
Use Scenario: Isolating 3.3 V processor local bus from 5 V PCI/ISA expansion slots in industrial controllers. IC Role / Device Role / Timing Role: Level-translating bus transceiver enabling safe voltage-domain bridging with sub-4 ns propagation delay. Use Value: 5 V-tolerant inputs accept legacy slot signals; byte control allows independent enable of address vs. data lanes. |
| Backplane Data Link Interface | Embedded FPGA I/O Expansion |
|
Use Scenario: Interfacing FPGA I/O banks (3.3 V) to multi-drop backplane with 5 V-compatible receivers and daisy-chained loads. IC Role / Device Role / Timing Role: Noise-suppressed bidirectional data repeater with controlled slew via A-port series resistance. Use Value: Reduces simultaneous switching noise (SSN) on shared backplane lines; 3-STATE disable isolates faulty nodes. |
Use Scenario: Expanding FPGA GPIO count to drive external peripherals requiring 5 V logic levels or higher current drive. IC Role / Device Role / Timing Role: Configurable I/O buffer providing direction control, level translation, and current boosting per 8-bit group. Use Value: Eliminates need for discrete level shifters and buffer ICs; byte control matches FPGA's nibble-aligned I/O constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | No internal series resistance on either port; 3.3 V only I/O; lower drive (24 mA sink); no 5 V tolerance. | Suitable only for fully 3.3 V systems with controlled impedance PCBs; requires external termination. | Select when cost sensitivity outweighs noise suppression needs and system voltage is strictly 3.3 V. |
| 74LVTH162245MTD | Includes bushold on all data inputs; identical pinout, timing, and drive specs; same package. | Eliminates need for pull-up resistors on unused inputs - advantageous in low-pin-count FPGA or microcontroller expansions. | Choose when input floating-state risk exists and board space for pull-ups is constrained. |
Compared with SN74LVC16245ADGGR, the 74LVT162245MTD provides superior noise immunity via A-port series resistance and 5 V input tolerance; compared with 74LVTH162245MTD, it lacks bushold but offers identical transceiver functionality at lower unit cost where input hold is managed externally.
Availability
74LVT162245MTD is available at Aetrix Electronics and suitable for memory address buffering, PCI/ISA bus interfacing, backplane data links, and FPGA I/O expansion requiring stable component supply across industrial design cycles.
Supply support for 74LVT162245MTD 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
onsemi (formerly Fairchild Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, logic, and sensing solutions for automotive, industrial, cloud, and IoT applications.
The 74LVT162245 belongs to the LVT logic family, engineered for high-speed, low-voltage bus interfacing with mixed-voltage compatibility - targeting industrial control, communications infrastructure, and embedded computing where signal integrity and interoperability are critical.
FAQ
Is 74LVT162245MTD still in active production?
No - the 74LVT162245MTD is marked "DISCONTINUED" and "NOT RECOMMENDED FOR NEW DESIGN" in the official onsemi datasheet. However, Aetrix Electronics maintains legacy inventory with full traceability and supports existing production programs through obsolescence management services for the 74LVT162245MTD.
What is the function of the 25 Ω series resistance in 74LVT162245MTD?
The 25 Ω equivalent series resistance is integrated only on the A-port outputs of the 74LVT162245MTD and functions to dampen signal reflections and reduce overshoot/undershoot on unterminated or stub-loaded traces - particularly beneficial in memory address and clock distribution paths where external termination is impractical.
Can 74LVT162245MTD interface directly with 5 V logic inputs?
Yes - the 74LVT162245MTD accepts input voltages up to 5.5 V on all data and control pins (A0–A15, B0–B15, OE1/OE2, T/R1/T/R2), enabling direct connection to 5 V TTL outputs without level-shifting circuitry, while operating from a 3.3 V supply.
How does the byte-control architecture of 74LVT162245MTD improve system design?
The 74LVT162245MTD's dual OE/T/R pairs (OE1/T/R1 for A0–A7/B0–B7; OE2/T/R2 for A8–A15/B8–B15) allow independent direction and enable control of two 8-bit segments - supporting split-bus protocols, partial bus isolation, and reduced contention in multi-master or segmented memory systems using the 74LVT162245MTD.
What package type is used for 74LVT162245MTD?
The 74LVT162245MTD uses a 48-lead Thin Shrink Small Outline Package (TSSOP), designated MTD48 per JEDEC MO-153, with 6.1 mm body width and 0.5 mm lead pitch - optimized for high-density PCB layouts while maintaining hand-soldering feasibility and thermal performance.
74LVT162245MTD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- 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:
- 48-TSSOP
74LVT162245MTD FAQ
1.How can I place an order for 74LVT162245MTD through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT162245MTD 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 74LVT162245MTD reliable?
The price and inventory of 74LVT162245MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT162245MTD is usually 5 days.
3.What payment methods are accepted for 74LVT162245MTD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT162245MTD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT162245MTD?
74LVT162245MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT162245MTD 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 74LVT162245MTD?
For technical support, including 74LVT162245MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT162245MTD requirements.
6.How does Aetrix verify that 74LVT162245MTD is sourced from the original manufacturer or authorized distributors?
All 74LVT162245MTD 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 74LVT162245MTD meets industry standards.
7.What is the process for return or replacement of 74LVT162245MTD?
All 74LVT162245MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT162245MTD, 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 74LVT162245MTD part is unused and in its original packaging.
Return procedure for 74LVT162245MTD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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