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Texas Instruments SN74ABT162244DLR
- Part No.:
- SN74ABT162244DLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT162244DLR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,875
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Product details
Overview
SN74ABT162244DLR from Texas Instruments is a 16-bit noninverting 3-state buffer/line driver in SSOP-48 package, designed for memory address and bus-oriented applications. It features symmetrical active-low OE inputs, 25-Ω integrated series output resistors, ±100 µA Ioff, and operates from 4.5 V to 5.5 V across −40°C to +85°C.
For engineers reviewing the SN74ABT162244DLR datasheet, SN74ABT162244DLR pinout, SN74ABT162244DLR application, or SN74ABT162244DLR equivalent, this device supports hot-insertion via Ioff and power-up 3-state, delivers sub-4 ns propagation delay (tPLH/tPHL), and enables flow-through PCB layout with distributed VCC/GND pins.
Technical Context
The SN74ABT162244DLR implements four independent 4-bit noninverting buffers, each with dedicated active-low output-enable (OE) control. Its outputs source/sink up to 12 mA while incorporating on-die 25-Ω series termination to suppress overshoot/undershoot without external resistors.
It integrates Ioff circuitry to disable outputs during power-down and power-up 3-state logic to force high-impedance at VCC ramp-up/down, preventing bus contention. Latch-up performance exceeds 500 mA per JESD-17, and distributed power/ground pins minimize switching noise in high-speed memory and clock distribution systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL and ABT logic families. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns @ VCC = 5 V - Enables timing-critical address and data bus buffering in fast memory systems. |
| Output Drive | ±12 mA - Sufficient to drive multiple TTL loads or terminated transmission lines without external buffers. |
| Integrated Termination | 25-Ω series resistor per output - Eliminates need for discrete series resistors, reducing BOM count and PCB area. |
| Ioff Current | ±100 µA @ VCC = 0 - Prevents damaging backflow current during hot-swap or partial-power-down conditions. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial-grade embedded and computing applications. |
| Package | SSOP-48 (DL) - 0.635 mm pitch, 12.6 mm × 6.2 mm footprint optimized for high-density board layouts. |
Pinout & Package
SN74ABT162244DLR uses a 48-pin Shrink Small Outline Package (SSOP-DL) with 0.635 mm lead pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height. Pin 1 is located at top-left corner (Q1 quadrant) in tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Independent control of each 4-bit buffer group; low enables outputs, high forces high-Z state. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Noninverting input | 16 total data inputs; each maps directly to corresponding Y output with no inversion. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Noninverting buffered output | 16 total outputs with integrated 25-Ω series resistance; capable of sourcing/sinking 12 mA. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve power integrity across wide bus. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins interleaved with signals and power to minimize ground bounce (VOLP < 1 V). |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins arranged on opposite sides of package to simplify layer routing and reduce trace crossovers. |
| Hot-insertion support | Ioff and power-up 3-state prevent backfeed and bus conflict during live insertion into powered-backplane systems. |
| Output ground bounce suppression | VOLP < 1 V at VCC = 5 V ensures signal integrity during high-speed switching in dense memory subsystems. |
| Latch-up immunity | Exceeds 500 mA per JESD-17 - robust against transient-induced latch-up in noisy industrial environments. |
| Widebus family compatibility | Pin- and function-compatible with other TI Widebus ABT devices, enabling scalable bus driver design. |
Applications
| Memory Address Buffering | System Bus Transceiver Interface |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory arrays. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing level translation, fanout expansion, and bus isolation. Use Value: Integrated 25-Ω series resistors eliminate external termination components, reducing layout complexity and improving signal edge fidelity. |
Use Scenario: Interfacing between CPU local bus and peripheral I/O bus in industrial PLC backplanes. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent OE control per 4-bit segment for selective data routing. Use Value: Sub-4 ns propagation delay and distributed VCC/GND pins maintain timing margins and suppress crosstalk in multi-drop bus configurations. |
| Hot-Swappable Module Backplane | Clock Distribution Fanout |
|
Use Scenario: Enabling safe insertion/removal of add-in cards in powered telecom or server chassis. IC Role / Device Role / Timing Role: Hot-insertion–qualified buffer isolating card-local buses from main backplane during power sequencing. Use Value: Ioff and power-up 3-state guarantee zero current backflow and automatic high-Z state at power-on/off transitions. |
Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs). IC Role / Device Role / Timing Role: Low-skew, noninverting clock driver with matched propagation delays across all 16 outputs. Use Value: Symmetrical tPLH/tPHL (≤ 3.9 ns) and tight parameter matching ensure minimal inter-channel skew in timing-critical clock trees. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162244DGGR | TSSOP-48 package (5.1 mm × 6.2 mm); 0.5 mm pitch; higher thermal resistance (θJA = 70°C/W vs. 63°C/W). | Better suited for ultra-high-density boards where smaller footprint is prioritized over thermal margin. | Select DGGR when board space is constrained and thermal load is moderate; DL offers superior heat dissipation. |
| SN74LVC162244ADGGR | 3.3-V only operation (1.65–3.6 V); lower drive (±24 mA); no integrated 25-Ω resistors; CMOS input thresholds. | Designed for mixed-voltage 3.3-V systems; requires external termination and level-shifting for 5-V interfacing. | Choose LVC variant only for 3.3-V-only designs; SN74ABT162244DLR remains optimal for legacy 5-V bus systems. |
Compared with SN74ABT162244DGGR, the SN74ABT162244DLR provides better thermal performance and mechanical robustness in SSOP packaging; versus SN74LVC162244ADGGR, it delivers native 5-V compatibility, integrated termination, and proven hot-swap reliability in industrial backplanes.
Availability
SN74ABT162244DLR is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, and hot-swappable module interfaces requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.
Supply support for SN74ABT162244DLR 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 logic solutions, with decades of heritage in high-reliability interface and bus technologies.
The SN74ABT162244DLR belongs to TI's Widebus ABT family-engineered specifically for high-speed, high-density memory addressing, clock distribution, and bus-oriented receiver/transmitter applications in industrial and computing systems.
FAQ
What is the recommended pull-up resistor value for OE pins on SN74ABT162244DLR?
The minimum pull-up resistor value for OE pins on SN74ABT162244DLR is determined by the current-sinking capability of the driving source. TI specifies that OE should be tied to VCC through a pull-up resistor to ensure high-impedance state during power-up; typical values range from 4.7 kΩ to 10 kΩ for standard logic drivers. The SN74ABT162244DLR datasheet does not define a fixed minimum resistance but emphasizes that the resistor must accommodate the driver's sink current while maintaining valid VIH (>2 V) at OE.
Does SN74ABT162244DLR support true bidirectional data flow?
No, SN74ABT162244DLR is a unidirectional noninverting buffer with separate input (A) and output (Y) terminals. It does not implement internal direction control or bus transceiver logic. Data flows strictly from A to Y under OE assertion; bidirectional operation requires pairing with complementary devices or using dedicated transceivers like the SN74ABT16245 series.
Can SN74ABT162244DLR be used in 3.3-V systems?
No, SN74ABT162244DLR is specified only for 4.5 V to 5.5 V operation per its recommended operating conditions. Using it at 3.3 V violates the minimum VCC requirement and risks unreliable output levels, increased propagation delay, and potential functional failure. For 3.3-V applications, consider the SN74LVC162244A or SN74ALVC162244 families instead.
What is the maximum capacitive load SN74ABT162244DLR can drive reliably?
SN74ABT162244DLR switching characteristics are characterized at CL = 50 pF, and its 12-mA drive strength supports heavier loads in practice. However, maintaining sub-4 ns propagation delay and clean edges requires limiting total load (including trace capacitance and input capacitance of driven devices) to ≤ 75 pF. Exceeding this may increase rise/fall times and induce ringing due to impedance mismatch.
How does the integrated 25-Ω series resistor in SN74ABT162244DLR affect PCB layout?
The integrated 25-Ω series resistor in SN74ABT162244DLR eliminates the need for discrete surface-mount resistors on each output line, reducing component count, saving PCB area, and removing placement variability. Layout benefits include simplified fanout routing, elimination of resistor pads and vias, and improved signal integrity consistency-especially critical in parallel bus implementations where trace length matching and termination uniformity are essential.
SN74ABT162244DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74ABT162244DLR FAQ
1.How can I place an order for SN74ABT162244DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT162244DLR 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 SN74ABT162244DLR reliable?
The price and inventory of SN74ABT162244DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT162244DLR is usually 5 days.
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Once your SN74ABT162244DLR 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 SN74ABT162244DLR?
For technical support, including SN74ABT162244DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT162244DLR requirements.
6.How does Aetrix verify that SN74ABT162244DLR is sourced from the original manufacturer or authorized distributors?
All SN74ABT162244DLR 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 SN74ABT162244DLR meets industry standards.
7.What is the process for return or replacement of SN74ABT162244DLR?
All SN74ABT162244DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT162244DLR, 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 SN74ABT162244DLR part is unused and in its original packaging.
Return procedure for SN74ABT162244DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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