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Texas Instruments SN74ABT16827DLR
- Part No.:
- SN74ABT16827DLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT16827DLR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,083
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Product details
Overview
SN74ABT16827DLR from Texas Instruments is a noninverting 20-bit buffer/driver with dual 10-bit sections, 3-state outputs, ±32-mA high-drive capability, 5-V supply operation, and SSOP-56 package - used in high-speed bus interface applications requiring level translation and load isolation in industrial control backplanes.
For engineers reviewing the SN74ABT16827DLR datasheet, SN74ABT16827DLR pinout, SN74ABT16827DLR application, or SN74ABT16827DLR equivalent, key selection criteria include output drive strength (–32 mA IOH / 64 mA IOL), power-up high-impedance behavior, distributed VCC/GND layout support, flow-through architecture for PCB routing, and JEDEC JESD-17 latch-up immunity.
Technical Context
This device implements two independent 10-bit noninverting buffer sections, each controlled by two active-low output-enable inputs (e.g., 1OE1 and 1OE2); both must be low to enable that section's Y outputs. Outputs enter high-impedance state if either OE is high, or when VCC is below 2.1 V during power sequencing.
Designed using TI's EPIC-IIB BiCMOS process, it achieves low ground bounce (VOLP < 1 V), supports fast switching (tPLH/tPHL ≤ 3.4 ns at 5 V), and features distributed power/ground pins plus flow-through pinout to minimize noise and optimize trace routing on dense PCBs.
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 CMOS systems while maintaining noise margin. |
| Output Drive | –32 mA IOH / 64 mA IOL - drives heavy capacitive loads and multiple TTL inputs without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 3.4 ns (max) at VCC = 5 V - enables reliable operation in >100-MHz bus environments. |
| Power-Up State | High-impedance when VCC < 2.1 V - prevents bus contention during power ramp-up/down sequences. |
| Latch-Up Immunity | >500 mA per JEDEC JESD-17 - guarantees robustness against transient-induced latch-up in noisy industrial settings. |
| Input Clamp Current | –18 mA IIK - protects inputs from negative transients up to –0.5 V without damage. |
| Thermal Resistance | θJA = 74°C/W (DL package) - defines maximum junction temperature rise under typical board-mount conditions. |
Pinout & Package
SN74ABT16827DLR is housed in a 56-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, with 0.025-inch (0.635 mm) lead pitch and exposed thermal pad not present. Pin 1 located in Q1 quadrant per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Section Output Enable (active-low) | Both enables per 10-bit section must be low to activate outputs; any high forces high-Z state. |
| 1A1–1A10, 2A1–2A10 | Data Inputs | Noninverting inputs for respective 10-bit buffer sections; TTL-compatible thresholds (VIL = 0.8 V, VIH = 2 V). |
| 1Y1–1Y10, 2Y1–2Y10 | Buffered Outputs | 3-state, high-drive outputs supporting fan-out to 10+ TTL loads or 20+ CMOS loads. |
| VCC (Pins 7, 22, 36, 49, 56) | Power Supply | Distributed VCC pins reduce simultaneous switching noise and improve power integrity across wide bus. |
| GND (Pins 4, 11, 18, 25, 32, 40, 46, 53) | Ground Reference | Eight GND pins interspersed with signals and VCC to minimize ground bounce and crosstalk. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins arranged on opposite sides of package to eliminate layer jumps and reduce trace length in bus routing. |
| Distributed VCC/GND pinning | Five VCC and eight GND pins placed strategically to suppress simultaneous switching noise and stabilize local supply rails. |
| EPIC-IIB BiCMOS process | Combines bipolar speed and CMOS density to achieve sub-4-ns propagation delay with <1-V ground bounce at 5 V. |
| Power-up/power-down high-Z | Guaranteed high-impedance state when VCC is between 0–2.1 V, eliminating bus conflicts during supply sequencing. |
| JEDEC JESD-17 latch-up rating | Exceeds 500 mA - validated for use in harsh industrial environments with high ESD and surge exposure. |
Applications
| Industrial Backplane Interface | Memory Bus Isolation |
|---|---|
|
Use Scenario: Isolating CPU address/data buses from peripheral modules in programmable logic controllers (PLCs) with hot-swap capability. IC Role / Device Role / Timing Role: Bidirectional 20-bit buffer enabling controlled signal transfer between isolated voltage domains while preventing contention during insertion/removal. Use Value: High-impedance power-up behavior and distributed grounding ensure no bus glitches occur during module hot-plug events. |
Use Scenario: Driving SRAM or Flash memory data/address lines in embedded controllers where multiple memory banks share a common bus. IC Role / Device Role / Timing Role: Noninverting 3-state driver providing load isolation and timing margin extension for wide parallel memory interfaces. Use Value: 64-mA sink current supports full fan-out to 10+ memory devices without signal degradation or timing skew. |
| Test Equipment Signal Routing | Automated Test System (ATE) Channel Expansion |
|
Use Scenario: Multiplexing digital stimulus signals across multiple DUT channels in boundary-scan test fixtures. IC Role / Device Role / Timing Role: Low-propagation-delay buffer enabling precise edge alignment across 20-channel parallel test vectors. Use Value: tPLH/tPHL ≤ 3.4 ns ensures sub-nanosecond skew between channels, critical for high-speed digital pattern generation. |
Use Scenario: Expanding digital I/O channel count in modular ATE mainframes via plug-in interface cards. IC Role / Device Role / Timing Role: Dual-section 10-bit buffer allowing independent enable control per card slot to manage resource allocation dynamically. Use Value: Separate 1OE1/1OE2 and 2OE1/2OE2 inputs permit per-slot bus arbitration without additional logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVT16827DLR | Lower drive (–24 mA IOH / 48 mA IOL), 3.3-V only (2.7–3.6 V), LVTTL-compatible input thresholds. | Suitable for mixed-voltage 3.3-V systems interfacing to legacy 5-V peripherals via level-shifting. | Select when lower power and 3.3-V compatibility outweigh need for 5-V rail operation and higher drive. |
| SN74ALVC16827GR | 3.3-V operation (1.65–3.6 V), smaller 48-pin TSSOP package, lower ICC (2 µA max), but no JESD-17 latch-up rating. | Targeted at portable or space-constrained designs where thermal budget and footprint are prioritized over industrial ruggedness. | Choose for compact, low-power applications where latch-up immunity and 5-V tolerance are not required. |
Compared with SN74ABT16827DLR, SN74LVT16827DLR trades 5-V compatibility and higher drive for lower voltage operation and reduced power, while SN74ALVC16827GR sacrifices industrial-grade latch-up protection and package pin count for size and static current efficiency.
Availability
SN74ABT16827DLR is available at Aetrix Electronics and suitable for industrial automation backplanes, memory subsystem isolation, automated test equipment signal routing, and high-reliability embedded controller bus expansion requiring stable component supply and long-term lifecycle support.
Supply support for SN74ABT16827DLR 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 and industrial-grade logic families.
The SN74ABT16827DLR belongs to TI's Widebus™ family of advanced BiCMOS bus interface devices, engineered specifically for high-speed, noise-immune, and latch-up-resistant operation in mission-critical industrial and test equipment applications.
FAQ
What is the operating temperature range for the SN74ABT16827DLR?
The SN74ABT16827DLR is characterized for operation from –40°C to +85°C, making it suitable for commercial and industrial environments including factory-floor automation systems and outdoor telecom infrastructure where ambient temperatures fluctuate widely. This range is verified per the manufacturer's recommended operating conditions and confirmed in the SCBS220C datasheet revision May 1997.
Does the SN74ABT16827DLR support hot-swap or live-insertion applications?
Yes, the SN74ABT16827DLR supports hot-swap applications due to its guaranteed high-impedance state when VCC is below 2.1 V during power-up or power-down. This prevents bus contention when modules are inserted or removed while system power remains active. The device also exceeds 500 mA latch-up immunity per JEDEC JESD-17, enhancing reliability in such scenarios.
How many output-enable inputs does the SN74ABT16827DLR have, and how do they function?
The SN74ABT16827DLR has four output-enable inputs: 1OE1 and 1OE2 for the first 10-bit section, and 2OE1 and 2OE2 for the second. Both enables per section must be low to activate that section's outputs; if either is high, all ten corresponding Y outputs go to high-impedance. This dual-OE architecture allows fine-grained control of bus segments without external gating logic.
What package type and lead count does the SN74ABT16827DLR use?
The SN74ABT16827DLR uses a 56-pin Shrink Small-Outline Package (SSOP), designated DL in TI's packaging nomenclature, with 300-mil body width and 0.025-inch (0.635 mm) lead pitch. It is supplied in large tape-and-reel format (1000 units per reel), and pin 1 is located in quadrant Q1 per TI's tape orientation standard.
Can the SN74ABT16827DLR operate reliably at 4.5 V supply voltage?
Yes, the SN74ABT16827DLR is fully specified to operate at 4.5 V minimum supply voltage, with all key parameters - including VOH ≥ 2.0 V (at –32 mA), VOL ≤ 0.55 V (at 64 mA), and tPLH/tPHL ≤ 3.6 ns - guaranteed across the 4.5–5.5 V range. This ensures robust performance even under brown-out or aging power supply conditions commonly seen in industrial power rails.
SN74ABT16827DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- 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
SN74ABT16827DLR FAQ
1.How can I place an order for SN74ABT16827DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16827DLR 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 SN74ABT16827DLR reliable?
The price and inventory of SN74ABT16827DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16827DLR is usually 5 days.
3.What payment methods are accepted for SN74ABT16827DLR?
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SN74ABT16827DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16827DLR 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 SN74ABT16827DLR?
For technical support, including SN74ABT16827DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16827DLR requirements.
6.How does Aetrix verify that SN74ABT16827DLR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16827DLR 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 SN74ABT16827DLR meets industry standards.
7.What is the process for return or replacement of SN74ABT16827DLR?
All SN74ABT16827DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16827DLR, 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 SN74ABT16827DLR part is unused and in its original packaging.
Return procedure for SN74ABT16827DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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