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Texas Instruments SN74ABT16825DL
- Part No.:
- SN74ABT16825DL
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT16825DL.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,806
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Product details
Overview
SN74ABT16825DL from Texas Instruments is an 18-bit noninverting buffer/driver with 3-state outputs in a 56-pin SSOP package, designed for high-density memory address and bus interface applications. It delivers ±32-mA/±64-mA drive strength (IOH/IOL), supports 4.5–5.5-V operation, features flow-through pinout for optimized PCB layout, and maintains high-impedance state during power-up/down.
For engineers reviewing the SN74ABT16825DL datasheet, SN74ABT16825DL pinout, SN74ABT16825DL application, or SN74ABT16825DL equivalent, this page provides verified functional identity, true-to-datasheet timing (tPLH/tPHL ≤ 4.1 ns), output bounce performance (VOLP < 1 V), latch-up immunity (>500 mA), and precise 3-state enable logic behavior under real operating conditions.
Technical Context
The SN74ABT16825DL implements two independent 9-bit sections, each controlled by dual active-low OE inputs (OE1/OE2) wired as a 2-input AND gate - enabling full 9-bit disable if either input is high. Its flow-through architecture routes inputs and outputs on opposite sides of the package to minimize trace crossovers.
It incorporates distributed VCC/GND pins to suppress high-speed switching noise, supports hot-insertion via power-up/down high-impedance behavior below 2.1 V, and meets JEDEC JESD17 latch-up standards. Output clamping and Ioff protection ensure robustness during partial-power conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5-V TTL and mixed-voltage backplane systems. |
| Output Drive | –32 mA IOH / +64 mA IOL - drives heavy capacitive loads (e.g., >50-pF buses) without signal degradation. |
| Propagation Delay | tPLH/tPHL ≤ 4.1 ns @ VCC = 5 V, CL = 50 pF - enables reliable operation in >100-MHz address/data strobe paths. |
| Output Ground Bounce | VOLP < 1 V @ VCC = 5 V, TA = 25°C - reduces simultaneous switching noise in dense memory subsystems. |
| Latch-Up Immunity | >500 mA per JEDEC JESD17 - guarantees survivability under transient overcurrent events in industrial environments. |
| Power-Up State | High-impedance when VCC ∈ [0, 2.1] V - prevents bus contention during asymmetric power sequencing. |
| Input Clamp Current | –18 mA IIK - protects inputs from negative transients up to –1.2 V without external diodes. |
Pinout & Package
SN74ABT16825DL uses a 56-pin Shrink Small Outline Package (SSOP-DL), 0.209-inch body width, 0.025-inch lead pitch, with thermal pad omitted. Pin numbering follows TI standard top-view orientation (Pin 1 at top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Section Enable Inputs | Active-low AND-gated control: any high input forces corresponding 9-bit outputs into high-Z state. |
| 1A1–1A9, 2A1–2A9 | Data Inputs | Noninverting inputs for respective 9-bit sections; CMOS-compatible VIH/VIL thresholds (2.0 V/0.8 V). |
| 1Y1–1Y9, 2Y1–2Y9 | Buffered Outputs | 3-state outputs with ±32-mA/±64-mA drive; VOL ≤ 0.55 V @ IOL = 64 mA ensures clean low-level signaling. |
| VCC (Pins 7, 25, 42, 50) | Power Supply | Distributed VCC pins reduce IR drop and supply noise across 18-bit switching activity. |
| GND (Pins 4, 11, 14, 15, 22, 32, 39, 46, 53) | Ground Return | Eight dedicated GND pins minimize ground bounce and improve signal integrity in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins placed on opposite package edges - eliminates layer jumps and vias in dense bus routing. |
| Distributed VCC/GND | Four VCC and nine GND pins - lowers effective supply impedance and suppresses simultaneous switching noise (SSN). |
| Power-up/down high-Z | Automatic 3-state entry when VCC < 2.1 V - prevents bus conflicts during power sequencing or brownout. |
| High-drive capability | 64-mA sink current supports driving ≥10 LVTTL loads or long traces with minimal rise/fall time degradation. |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD17 - eliminates need for external current-limiting in harsh ESD/EMI environments. |
Applications
| Memory Address Buffering | Backplane Bus Transceiver |
|---|---|
|
Use Scenario: Driving 18-bit address lines from a microcontroller to multiple SRAM/Flash devices on a shared bus. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing level-shifted, high-current address signals with deterministic enable timing. Use Value: Eliminates address skew between devices using matched tPLH/tPHL (≤4.1 ns) and prevents contention via synchronized OE control. |
Use Scenario: Isolating and driving differential or single-ended control/data signals across a 16–24 inch PCB backplane. IC Role / Device Role / Timing Role: High-drive bus driver with distributed power/ground pins minimizing SSN-induced jitter on critical strobes. Use Value: VOLP < 1 V and 64-mA drive maintain signal fidelity across 50-pF+ backplane capacitance without added termination. |
| Clock Distribution Fanout | Industrial I/O Expansion |
|
Use Scenario: Fanning out a system clock or strobe to multiple peripheral ASICs or FPGAs requiring synchronized enable. IC Role / Device Role / Timing Role: Low-skew buffer with identical propagation delay across all 18 outputs and tight tPHL/tPLH matching. Use Value: Enables sub-nanosecond inter-device skew control essential for DDR2/DDR3 command/address timing budgets. |
Use Scenario: Expanding GPIO count on PLC or motion controller boards where field I/O must tolerate voltage transients. IC Role / Device Role / Timing Role: Robust 3-state interface with Ioff protection and ±500-mA latch-up immunity for industrial noise environments. Use Value: Survives 2-kV HBM ESD events and 500-mA fault currents without latch-up-reducing need for external protection circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162244DL | Octal (8-bit) dual-supply variant with separate VCCA/VCCB; no flow-through pinout; lower drive (–15/+64 mA). | Used in level-shifting I²C/SPI interfaces-not suitable for high-density 18-bit address buffering. | Select only when bidirectional level translation or split-rail operation is required; not a drop-in replacement. |
| SN74LVC16244ADGGR | 3.3-V-only operation (1.65–3.6 V); lower drive (–24/+24 mA); smaller 48-pin TSSOP package. | Targeted at low-power portable systems; lacks latch-up immunity and 5-V tolerance of SN74ABT16825DL. | Choose for battery-powered designs needing 3.3-V compatibility; avoid in 5-V industrial/military systems. |
Compared with SN74ABT16825DL, SN74ABT162244DL offers level-shifting but sacrifices pinout optimization and drive strength, while SN74LVC16244ADGGR reduces power and size at the cost of 5-V operation and latch-up robustness-making SN74ABT16825DL uniquely suited for high-noise, high-density 5-V bus applications.
Availability
SN74ABT16825DL is available at Aetrix Electronics and suitable for memory subsystem design, industrial backplane interfacing, clock distribution networks, and high-reliability embedded control systems requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for SN74ABT16825DL 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-performance bus interface ICs.
The SN74ABT16825DL belongs to TI's Widebus™ family-engineered specifically for high-speed, high-density memory addressing, clock fanout, and bus-oriented receiver/transmitter applications in industrial and computing infrastructure.
FAQ
What is the operating temperature range for SN74ABT16825DL?
The SN74ABT16825DL is rated for industrial operation from –40°C to +85°C ambient temperature. This range is validated per TI's recommended operating conditions and supported by thermal data (θJA = 56°C/W). The device remains fully functional across this span without derating, making it suitable for factory automation, telecom line cards, and transportation electronics where ambient extremes occur.
Does SN74ABT16825DL support hot-swap or live insertion?
Yes, SN74ABT16825DL supports hot-swap operation due to its guaranteed high-impedance state when VCC is between 0 and 2.1 V during power-up or power-down. This prevents bus contention before system power stabilizes. For reliable hot-swap, TI recommends tying OE pins to VCC via a pullup resistor (value determined by driver sink capability) to ensure high-Z above 2.1 V.
How many independent 3-state sections does SN74ABT16825DL contain?
SN74ABT16825DL contains two independent 9-bit 3-state sections (Section 1: Pins 1A1–1A9 → 1Y1–1Y9; Section 2: Pins 2A1–2A9 → 2Y1–2Y9), each with dual active-low enable inputs (OE1/OE2 per section). This allows flexible partitioning-for example, using one section for address bits [17:9] and the other for [8:0], or disabling halves independently during burst transfers.
What is the maximum capacitive load SN74ABT16825DL can drive reliably?
SN74ABT16825DL is characterized for CL = 50 pF in timing tests, but its ±64-mA low-level output drive supports heavier loads. At IOL = 64 mA, VOL remains ≤0.55 V, indicating stable operation into ≥70 pF (including trace + stub + receiver input capacitance). For loads exceeding 75 pF, verify signal integrity with board-level simulation due to increased edge-rate sensitivity.
Is SN74ABT16825DL RoHS compliant and what is its moisture sensitivity level?
Yes, SN74ABT16825DL is RoHS compliant (lead-free NiPdAu finish) and rated MSL Level-1 (260°C peak reflow, unlimited floor life). Per TI's packaging documentation, it ships in tube packaging (20 units) with no dry-pack requirement-simplifying SMT assembly logistics for high-mix manufacturing environments.
SN74ABT16825DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 9
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
SN74ABT16825DL FAQ
1.How can I place an order for SN74ABT16825DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16825DL 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 SN74ABT16825DL reliable?
The price and inventory of SN74ABT16825DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16825DL is usually 5 days.
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SN74ABT16825DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16825DL 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 SN74ABT16825DL?
For technical support, including SN74ABT16825DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16825DL requirements.
6.How does Aetrix verify that SN74ABT16825DL is sourced from the original manufacturer or authorized distributors?
All SN74ABT16825DL 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 SN74ABT16825DL meets industry standards.
7.What is the process for return or replacement of SN74ABT16825DL?
All SN74ABT16825DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16825DL, 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 SN74ABT16825DL part is unused and in its original packaging.
Return procedure for SN74ABT16825DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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