My Inquiry
My Account
Texas Instruments SN74ABT16825DLR
- Part No.:
- SN74ABT16825DLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT16825DLR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,565
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ABT16825DLR from Texas Instruments is an 18-bit noninverting buffer/driver with dual 3-state control, designed for high-density memory address and bus interface applications. It features ±32-mA/±64-mA output drive, distributed VCC/GND pins to suppress switching noise, flow-through pinout for optimized PCB layout, and guaranteed high-impedance state during power-up/down (VCC < 2.1 V). It operates across –40°C to 85°C in a 56-pin SSOP package.
For engineers reviewing the SN74ABT16825DLR datasheet, SN74ABT16825DLR pinout, SN74ABT16825DLR application, or SN74ABT16825DLR equivalent, key selection criteria include 3-state enable logic (dual active-low AND gate), latch-up immunity (>500 mA), ground-bounce performance (<1 V VOLP), true data buffering, and compatibility with 5-V TTL/CMOS systems requiring high-drive bus interfacing.
Technical Context
The SN74ABT16825DLR implements two independent 9-bit buffer sections, each with separate active-low output-enable inputs (OE1/OE2) configured as a 2-input AND gate - either input high forces all nine outputs into high-impedance. This architecture enables flexible per-section control in multi-bus or split-address scenarios.
Its flow-through pinout places inputs and outputs on opposite sides of the SSOP package, minimizing trace crossovers and reducing signal integrity degradation. Distributed power/ground pins and internal design suppress simultaneous switching noise, supporting reliable operation at >100 MHz data rates under CL = 50 pF loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL logic rails and stable operation across industrial supply tolerances. |
| IOH/IOL | –32 mA / +64 mA - delivers robust drive strength to sink/source multiple TTL loads or drive long traces without external buffers. |
| tPLH/tPHL | 1 ns (min) to 4.1 ns (max) - supports sub-5-ns propagation delay for high-speed address/data latching in memory subsystems. |
| VOL @ IOL = 64 mA | ≤ 0.55 V - guarantees solid low-level logic margin even under full-output current load, preventing false switching in downstream receivers. |
| Input Transition Rate | Data pins: ≤10 ns/V - accommodates fast-edge signals without excessive ringing or false triggering on input transitions. |
| Latch-Up Immunity | >500 mA per JESD17 - meets stringent reliability requirements for industrial and telecom equipment exposed to transient overcurrent events. |
| Power-Up State | High-Z when VCC < 2.1 V - prevents bus contention during power sequencing without external reset circuitry. |
Pinout & Package
SN74ABT16825DLR uses a 56-pin Shrink Small Outline Package (SSOP-DL), 0.300-inch body width, with 0.025-inch lead pitch. The flow-through architecture separates A (input) and Y (output) terminals across opposing edges to simplify routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Active-low 3-state enable inputs (AND logic) | Either OE high disables corresponding 9-bit section; enables precise per-group bus isolation without software overhead. |
| 1A1–1A9, 2A1–2A9 | Noninverting data inputs | Accept TTL/CMOS-compatible logic levels; internally clamped to prevent damage from undershoot/overshoot. |
| 1Y1–1Y9, 2Y1–2Y9 | Noninverting buffered outputs | Deliver high-current drive with controlled edge rates; support hot-swap-capable bus architectures. |
| VCC (Pins 7, 25, 42, 50) | Supply voltage connections | Distributed VCC pins reduce IR drop and localized noise coupling across the 18-bit channel array. |
| GND (Pins 4, 11, 14, 15, 22, 32, 39, 46, 53) | Ground return paths | Nine dedicated GND pins minimize ground bounce and ensure stable reference for all output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Enables straight-line PCB trace routing between controller and memory/bus, reducing stub length and impedance discontinuities. |
| Dual independent 3-state controls | Allows selective enabling of 9-bit segments - e.g., upper/lower address byte or data nibble groups - without gating logic. |
| High-impedance on power ramp | Guarantees bus isolation from power-on reset through 2.1 V threshold, eliminating need for external power-good sequencing. |
| Low ground bounce (VOLP < 1 V) | Maintains signal integrity during simultaneous output switching, critical for noise-sensitive mixed-signal systems. |
| Latch-up immunity >500 mA | Meets JEDEC JESD17 for robustness in harsh environments, including industrial motor drives and base station backplanes. |
Applications
| Memory Address Buffering | System Bus Transceiver Interface |
|---|---|
|
Use Scenario: Driving 18-bit address lines from a microcontroller to SRAM or Flash memory arrays in embedded instrumentation. IC Role / Device Role / Timing Role: Noninverting buffer with per-byte 3-state control, providing timing-aligned address propagation and bus release during idle cycles. Use Value: Eliminates need for discrete pull-ups or additional level shifters while maintaining <4.1 ns tPHL for synchronous access timing compliance. |
Use Scenario: Isolating CPU data bus from peripheral expansion slots in industrial PLC backplanes. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent enable controls, supporting read/write direction switching via OE logic. Use Value: Enables clean bus turnaround with <6.1 ns tPZL disable time, preventing data collision during mode transitions. |
| Clock Distribution Fanout | Legacy Peripheral Interface |
|
Use Scenario: Fanning out a single 5-V clock signal to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) in test equipment. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with matched propagation delays across all 18 outputs. Use Value: Delivers <0.5 ns inter-channel skew (typical) and 64-mA sink capability to drive capacitive loads up to 100 pF per node. |
Use Scenario: Interfacing modern microcontrollers with legacy parallel peripherals (e.g., dot-matrix LCD controllers, ISA-style I/O cards). IC Role / Device Role / Timing Role: Level-translating and drive-boosting buffer for 5-V tolerant interfaces requiring TTL-compatible thresholds and fanout. Use Value: Supports VIH = 2.0 V and VIL = 0.8 V thresholds while sourcing/sinking >3× standard TTL load, ensuring interoperability without external resistors. |
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 |
|---|---|---|---|
| SN74ABT162244DLR | Octal (8-bit) dual-supply configuration; no flow-through pinout; lower drive (–15/+64 mA); 48-pin SSOP. | Requires two devices for 18-bit coverage; less optimal for dense PCB layouts due to folded pinout. | Choose when modular scalability or separate VCC domains per group are needed; not drop-in for SN74ABT16825DLR pin count or layout. |
| 74FCT162244CTPAG | 16-bit (not 18-bit); FCT logic family; lower ICC (20 mA max); 48-pin TSSOP; no guaranteed high-Z below 2.1 V. | Lacks two bits and power-ramp safety; suitable only where bit count and sequencing robustness are secondary. | Select for cost-sensitive, lower-power applications where 16-bit width suffices and external power sequencing is acceptable. |
Compared with SN74ABT16825DLR, SN74ABT162244DLR offers modularity but increases board area and component count, while 74FCT162244CTPAG reduces power and cost at the expense of bit width, noise immunity, and intrinsic power-up safety - making SN74ABT16825DLR the preferred choice for mission-critical 18-bit bus buffering with minimal design risk.
Availability
SN74ABT16825DLR is available at Aetrix Electronics and suitable for memory subsystems, industrial backplane interfaces, clock distribution networks, and legacy peripheral bridging requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74ABT16825DLR 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 ICs.
The SN74ABT16825DLR belongs to TI's Widebus™ family - engineered for high-speed, high-density bus interface applications in computing, communications, and industrial control systems where signal integrity and drive strength are critical.
FAQ
What is the operating temperature range for SN74ABT16825DLR?
The SN74ABT16825DLR is rated for industrial operation from –40°C to +85°C. This range is validated per TI's recommended operating conditions and supported by thermal characterization (θJA = 56°C/W). The device maintains full electrical specifications-including propagation delay, output drive, and 3-state leakage-across this entire range, making it suitable for deployment in factory automation, outdoor telecom infrastructure, and transportation electronics where ambient extremes occur.
Does SN74ABT16825DLR support hot-swap or live-insertion?
Yes, SN74ABT16825DLR supports hot-swap operation due to its guaranteed high-impedance state when VCC is below 2.1 V and its robust input/output clamp current ratings (–18 mA IIK, –50 mA IOK). During insertion, the device remains in high-Z until VCC rises above the threshold, preventing bus contention. Its latch-up immunity (>500 mA) further protects against transient faults common in live-backplane environments.
How does the dual 3-state enable logic work on SN74ABT16825DLR?
Each 9-bit section of SN74ABT16825DLR has two active-low enable inputs (e.g., 1OE1 and 1OE2) wired as a 2-input AND gate. If either input is high, all nine outputs in that section go high-impedance. Only when both enables are low do outputs reflect the input states. This allows flexible control-such as using one OE for system-wide disable and the other for local section gating-without external logic.
What is the maximum capacitive load SN74ABT16825DLR can drive reliably?
SN74ABT16825DLR is characterized for CL = 50 pF in its switching specs (e.g., tPLH, tPHL), but its ±64-mA IOL and –32-mA IOH allow driving higher capacitance. With proper termination and layout, it reliably drives up to 100 pF per output while maintaining <6 ns propagation delay and <1 V ground bounce-verified in TI application reports for Widebus™ backplane designs.
Is SN74ABT16825DLR RoHS compliant and lead-free?
Yes, SN74ABT16825DLR is RoHS compliant and features NiPdAu (NIPDAU) lead finish. Per TI's packaging documentation, it carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and is qualified for peak reflow temperatures up to 260°C. The "R" suffix denotes tape-and-reel packaging (1000 units/reel), fully compatible with automated SMT assembly processes.
SN74ABT16825DLR 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:
- 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
SN74ABT16825DLR FAQ
1.How can I place an order for SN74ABT16825DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16825DLR 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 SN74ABT16825DLR reliable?
The price and inventory of SN74ABT16825DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16825DLR is usually 5 days.
3.What payment methods are accepted for SN74ABT16825DLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT16825DLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT16825DLR?
SN74ABT16825DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16825DLR 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 SN74ABT16825DLR?
For technical support, including SN74ABT16825DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16825DLR requirements.
6.How does Aetrix verify that SN74ABT16825DLR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16825DLR 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 SN74ABT16825DLR meets industry standards.
7.What is the process for return or replacement of SN74ABT16825DLR?
All SN74ABT16825DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16825DLR, 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 SN74ABT16825DLR part is unused and in its original packaging.
Return procedure for SN74ABT16825DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ABT16825DLR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
