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NXP Semiconductors 74LVT162244BDL,112
- Part No.:
- 74LVT162244BDL,112
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74LVT162244BDL,112.pdf
- Description:
- IC BUFFER 16BIT N-INV 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,015
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Product details
Overview
74LVT162244BDL,112 from Nexperia is a 3.3 V 16-bit 3-state buffer/driver with integrated 30 Ω series output termination resistors, designed for high-speed bus interface applications in industrial and embedded systems. It supports four independent 4-bit buffer groups, each controlled by dedicated active-low output enables (1OE–4OE), delivers ±12 mA drive strength, operates across 2.7 V to 3.6 V supply, and features bus-hold inputs eliminating external pull-ups.
For engineers reviewing the 74LVT162244BDL,112 datasheet, 74LVT162244BDL,112 pinout, 74LVT162244BDL,112 application, or 74LVT162244BDL,112 equivalent, this device is selected for TTL-compatible 3.3 V bus buffering where signal integrity, low external component count, and hot-plug capability are critical - especially in memory address/data buses, FPGA I/O expansion, and backplane driver stages.
Technical Context
This BiCMOS buffer implements four independent 4-bit 3-state output groups, each with dedicated OE control and internal 30 Ω series termination per output. Its bus-hold circuitry maintains valid logic states on unused inputs without external resistors, and IOFF protection enables partial power-down operation when VCC = 0 V.
It supports overvoltage-tolerant inputs up to 5.5 V, permits live insertion/extraction, and meets JEDEC JESD8C (2.7–3.6 V) and JESD78 Class II Level B latch-up requirements. Propagation delays are as low as 0.5 ns (typ) at 3.3 V, with tPZH/tPLZ enable timing under 3.5 ns (typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Ensures compatibility with 3.3 V systems while tolerating rail variation without level-shifting. |
| Output Drive | ±12 mA - Sufficient to drive 50 Ω transmission lines or multiple TTL loads directly. |
| Propagation Delay | 2.5–2.8 ns (typ) - Enables reliable operation in >200 MHz bus environments with tight timing margins. |
| Input Voltage Range | 0 V to 5.5 V - Allows direct interfacing with 5 V logic without external translators. |
| Bus-Hold Current | ±75 μA to ±135 μA - Actively retains input state during floating conditions, removing need for pull-up/down resistors. |
| Termination Resistance | 30 Ω (integrated series) - Matches typical PCB trace impedance to suppress reflections without discrete resistors. |
| IOFF Leakage | ±100 μA max at VCC = 0 V - Prevents back-driving of powered busses during hot-swap or partial power-down. |
Pinout & Package
TSSOP48 package (SOT362-1), plastic thin shrink small outline, 48 leads, body width 6.1 mm, lead pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE (pins 1, 48, 25, 24) | Active-low output enable | Each controls 4 outputs independently; HIGH disables corresponding Yn group into high-Z state. |
| 1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3 (pins 47,46,44,43,41,40,38,37,36,35,33,32,30,29,27,26) | Data inputs | 16 total inputs grouped into four 4-bit channels; all support 5.5 V tolerant logic levels. |
| 1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3 (pins 2,3,5,6,8,9,11,12,13,14,16,17,19,20,22,23) | 3-state buffered outputs | Each includes 30 Ω series resistor; drives bidirectionally with ±12 mA capability and bus-hold retention. |
| VCC (pins 7,18,31,42) | Power supply | Four distributed supply pins reduce IR drop and improve noise immunity across wide bus layout. |
| GND (pins 4,10,15,21,28,34,39,45) | Ground reference | Eight ground pins provide low-inductance return paths for all 16 outputs and enable signals. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω output termination | Eliminates eight external series resistors per device, reducing BOM count and PCB area in high-density routing. |
| Bus-hold input circuitry | Maintains stable logic state on unconnected or unterminated inputs, preventing metastability and EMI from floating nodes. |
| IOFF partial power-down | Blocks current flow between powered and unpowered sections during hot-swap or system sleep, protecting downstream logic. |
| Overvoltage-tolerant inputs (5.5 V) | Enables direct connection to legacy 5 V subsystems without level shifters or clamping diodes. |
| Live insertion/extraction support | Allows safe board replacement in powered-backplane systems without system shutdown or data corruption. |
Applications
| Memory Address Bus Interface | FPGA I/O Expansion |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory with stub-free routing. IC Role / Device Role / Timing Role: Unidirectional 3-state buffer providing clean, terminated signal edges and bus isolation during idle cycles. Use Value: 30 Ω series termination suppresses ringing on 10+ cm traces; ±12 mA drive ensures setup/hold compliance at 100 MHz clock rates. |
Use Scenario: Extending FPGA GPIO banks to interface with off-board peripherals via 16-bit parallel bus. IC Role / Device Role / Timing Role: Level-translating and current-boosting buffer enabling 3.3 V FPGA core to drive 5 V tolerant peripheral inputs reliably. Use Value: 5.5 V input tolerance accepts peripheral status signals directly; bus-hold prevents glitches during FPGA configuration gaps. |
| Industrial Backplane Driver | Test Equipment Signal Conditioning |
Use Scenario: Buffering control signals across modular PLC backplanes with mixed-voltage modules. IC Role / Device Role / Timing Role: Isolated 4-channel buffer group enabling selective activation of sub-systems without crosstalk. Use Value: Four independent OE pins allow staggered enable sequencing; IOFF blocks backfeed when module is removed mid-operation. |
Use Scenario: Conditioning digital stimulus signals in automated test equipment before applying to DUT. IC Role / Device Role / Timing Role: Precision-delay-matched buffer ensuring skew < 0.3 ns between parallel channels for synchronized vector application. Use Value: 2.5 ns typical propagation delay with < 0.7 ns channel-to-channel skew guarantees timing alignment across all 16 bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | No integrated termination; requires external 33 Ω resistors; lower drive (±24 mA); 1.65–3.6 V supply. | Better suited for ultra-low-power systems where termination is added only where needed; lacks bus-hold. | Select when design requires flexible termination placement or higher drive at lower voltage. |
| 74ALVCH162244PW,118 | Higher speed (tPD = 2.0 ns typ); no built-in termination; 1.65–3.6 V; no 5.5 V input tolerance. | Optimized for lowest latency in high-frequency clock distribution; requires external clamping for 5 V inputs. | Choose for sub-2 ns timing-critical paths where external termination and level translation are acceptable. |
Compared with SN74LVC16244ADGGR and 74ALVCH162244PW,118, the 74LVT162244BDL,112 uniquely combines integrated 30 Ω termination, 5.5 V input tolerance, and bus-hold in a single TSSOP48 package - reducing layout complexity and improving robustness in mixed-voltage industrial backplanes.
Availability
74LVT162244BDL,112 is available at Aetrix Electronics and suitable for industrial automation controllers, FPGA carrier boards, memory subsystems, and test instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for 74LVT162244BDL,112 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVT162244B belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered for 3.3 V bus interfacing with enhanced drive strength, noise immunity, and system-level robustness in harsh industrial environments.
FAQ
Does 74LVT162244BDL,112 support hot-swap operation?
Yes. The device supports live insertion/extraction per its datasheet specification, enabled by IOFF circuitry that blocks current flow when VCC = 0 V and overvoltage-tolerant inputs (up to 5.5 V) that remain functional during partial power sequencing. This allows safe board replacement in powered backplane systems without system reset.
What is the purpose of the 30 Ω series resistance on each output?
The 30 Ω internal series resistor matches typical PCB trace characteristic impedance (e.g., 50–75 Ω) when combined with load capacitance and termination, suppressing signal reflections and overshoot. It eliminates the need for eight external discrete resistors per device, reducing BOM cost and layout area while maintaining signal integrity on medium-length traces.
Can unused inputs be left floating?
No. Unused inputs must not be left floating due to potential noise coupling and increased power consumption. However, bus-hold circuitry actively maintains the last-valid logic state on un-driven inputs, so no external pull-up or pull-down resistors are required - simplifying design and improving reliability in high-noise environments.
How does the device behave when VCC is 0 V but inputs are driven to 3.3 V?
When VCC = 0 V, the IOFF circuitry limits input-to-output leakage to ±100 μA maximum, preventing back-driving of powered downstream logic. Inputs remain overvoltage-tolerant up to 5.5 V, and the device enters a safe high-impedance state - enabling partial power-down modes and hot-swap compatibility without risk of latch-up or damage.
74LVT162244BDL,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74LVT162244BDL,112 FAQ
1.How can I place an order for 74LVT162244BDL,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT162244BDL,112 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 74LVT162244BDL,112 reliable?
The price and inventory of 74LVT162244BDL,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT162244BDL,112 is usually 5 days.
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6.How does Aetrix verify that 74LVT162244BDL,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT162244BDL,112 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 74LVT162244BDL,112 meets industry standards.
7.What is the process for return or replacement of 74LVT162244BDL,112?
All 74LVT162244BDL,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT162244BDL,112, 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 74LVT162244BDL,112 part is unused and in its original packaging.
Return procedure for 74LVT162244BDL,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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