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Texas Instruments SN74ABT827PWR
- Part No.:
- SN74ABT827PWR
- Manufacturer:
- Texas Instruments
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT827PWR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,672
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Product details
Overview
SN74ABT827PWR from Texas Instruments is a 10-bit noninverting 3-state bus buffer with dual active-low output-enable inputs (OE1, OE2), fabricated in EPIC-IIB BiCMOS technology. It delivers high-drive outputs (−32 mA IOH, 64 mA IOL), supports 5-V operation (4.5–5.5 V), operates from −40°C to 85°C, and features flow-through pinout for optimized PCB layout - used in wide-data-path bus interfacing for industrial control backplanes and memory expansion subsystems.
For engineers reviewing the SN74ABT827PWR datasheet, SN74ABT827PWR pinout, SN74ABT827PWR application, or SN74ABT827PWR equivalent, key selection considerations include its dual-OE 3-state control logic, high-impedance state during power-up/down (VCC < 2.1 V), low ground bounce (<1 V VOLP), latch-up immunity (>500 mA), and TSSOP-24 package compatibility with automated SMT assembly.
Technical Context
This device implements a 10-bit true (noninverting) buffer function with two independent active-low output-enable inputs feeding a 2-input AND gate - enabling full 10-bit bus isolation when either OE1 or OE2 is high. Its EPIC-IIB BiCMOS process enables high-speed switching (tPLH/tPHL ≤ 4.9 ns at 5 V, CL = 50 pF) while maintaining CMOS-level input thresholds (VIH = 2 V, VIL = 0.8 V) and TTL-compatible drive strength.
The SN74ABT827PWR integrates power-rail robustness features: absolute maximum VCC of 7 V, input/output voltage tolerance up to 5.5 V, and guaranteed high-impedance behavior during power sequencing (IOZPU/IOZPD ≤ ±50 µA for VCC = 0–2.1 V). Its flow-through architecture places inputs on one side (pins 1–11) and outputs on the opposite side (pins 13–23), minimizing trace crossovers in dense bus routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - compatible with standard 5-V logic rails and tolerant of supply ripple without functional degradation. |
| IOH / IOL | −32 mA / 64 mA - drives heavy capacitive loads (e.g., >10 pF per line) and multiple TTL inputs without signal integrity loss. |
| tPLH / tPHL | 1.1 ns (min) to 4.8 ns (max) at VCC = 5 V, CL = 50 pF - supports >200 MHz bus toggle rates in point-to-point configurations. |
| VIH / VIL | 2.0 V / 0.8 V - ensures reliable recognition of TTL and CMOS logic levels across temperature and voltage corners. |
| Power-Up State | High-impedance for VCC < 2.1 V - prevents bus contention during system power ramp-up or brownout conditions. |
| θJA (PW package) | 120°C/W - defines thermal derating limit; max continuous power dissipation ≈ 417 mW at TA = 85°C ambient. |
| Input Capacitance | Ci = 4 pF - minimizes loading on upstream drivers and preserves signal edge rate in high-speed buses. |
Pinout & Package
TSSOP-24 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, lead-free NiPdAu finish, moisture sensitivity level 1 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | OE1, OE2 | Active-low output-enable inputs - both must be low for output enable; OR logic via internal AND gate with inverted inputs. |
| 2–11 | A1–A10 | True data inputs - directly routed to corresponding Y outputs when enabled; no inversion or delay compensation. |
| 14–23 | Y1–Y10 | Noninverting buffered outputs - high-drive, 3-state capable; output impedance < 10 Ω in active state. |
| 12, 24 | GND, VCC | Power terminals - decoupling capacitor (0.1 µF ceramic) required within 5 mm of each pin for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Inputs (A1–A10) on left side, outputs (Y1–Y10) on right side - eliminates layer jumps and reduces crosstalk in parallel bus layouts. |
| Dual 3-state control | Independent OE1/OE2 inputs with AND logic - enables hierarchical bus arbitration (e.g., local vs. global enable) without external gating. |
| Power-rail safe startup | Guaranteed high-Z for VCC < 2.1 V - eliminates need for external power-on reset sequencing in mixed-voltage systems. |
| Low ground bounce | VOLP < 1 V at VCC = 5 V, TA = 25°C - maintains signal integrity during simultaneous output switching across all 10 bits. |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD-17 - withstands transient overcurrent events in industrial environments without destructive failure. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Isolating CPU address/data bus from modular I/O cards in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: 10-bit bidirectional buffer providing level-shifted, noise-immune bus extension between processor and peripheral slots. Use Value: Dual OE inputs allow card-local and rack-wide bus arbitration; high drive strength ensures signal integrity across 15 cm backplane traces. |
Use Scenario: Driving SRAM or Flash memory address lines in embedded instrumentation with expandable storage. IC Role / Device Role / Timing Role: Noninverting address latch buffer enabling clean, skew-minimized propagation to multiple memory devices. Use Value: Flow-through pinout simplifies length-matched routing; 4.8 ns max propagation delay supports 100+ MHz memory access timing. |
| Test Equipment Bus Controller | Legacy System Data Bridge |
|
Use Scenario: Interfacing FPGA-based pattern generators to DUT boards with legacy TTL bus standards. IC Role / Device Role / Timing Role: 3-state buffer translating FPGA I/O voltage (3.3 V) to 5-V TTL-compatible signals for stimulus delivery. Use Value: High-impedance state during FPGA configuration prevents bus conflicts; −32/+64 mA drive meets TTL fanout requirements. |
Use Scenario: Bridging ISA-bus peripherals to modern microcontroller-based host controllers in retro-computing upgrades. IC Role / Device Role / Timing Role: Wide-data-path repeater restoring signal amplitude and timing margins degraded by long ISA traces. Use Value: Latch-up immunity and 7-V absolute max rating tolerate legacy power supply variations; TSSOP-24 footprint fits compact adapter PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244PWR | Octal (8-bit), not 10-bit; identical EPIC-IIB process, same PW package, identical VCC/IO specs. | Suitable where bus width is ≤8 bits; requires two devices for 10-bit coverage, increasing board area and supply current. | Select SN74ABT244PWR only if system bus width is exactly 8 bits or partitioning into dual octal buffers is acceptable. |
| SN74LVC8T245PW | 10-bit, dual-supply (1.65–5.5 V), 32 mA drive, 3.3-V optimized; different logic family (LVC), lower power, no BiCMOS speed advantage. | Better for mixed-voltage 3.3/5-V interfaces; lacks latch-up immunity >500 mA and ground-bounce spec <1 V. | Choose SN74LVC8T245PW when operating at 3.3 V or requiring dual-supply translation; avoid for high-noise industrial 5-V backplanes. |
Compared with SN74ABT244PWR and SN74LVC8T245PW, the SN74ABT827PWR uniquely provides native 10-bit width in a single TSSOP-24 package with military-grade latch-up immunity and verified sub-1-V ground bounce - critical for deterministic timing in noise-prone 5-V industrial buses.
Availability
SN74ABT827PWR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, and test equipment bus controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ABT827PWR 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and aerospace design engagement.
The SN74ABT827PWR belongs to TI's ABT logic family - engineered for high-speed 5-V bus interface applications demanding robust noise immunity, predictable timing, and fail-safe power sequencing behavior.
FAQ
What is the recommended pullup resistor value for OE pins on the SN74ABT827PWR?
The SN74ABT827PWR datasheet specifies that OE should be tied to VCC through a pullup resistor when ensuring high-impedance state above 2.1 V. The minimum resistor value depends on the current-sinking capability of the driver controlling OE; typical designs use 4.7 kΩ to 10 kΩ. This ensures OE remains reliably low during active operation while guaranteeing high-Z during power transitions. Always verify against actual driver sink current in your SN74ABT827PWR circuit.
Does the SN74ABT827PWR support hot-plug operation?
The SN74ABT827PWR exhibits inherent hot-plug resilience due to its guaranteed high-impedance state for VCC < 2.1 V and absolute maximum ratings allowing VI/VO up to 7 V and 5.5 V respectively. However, it lacks explicit hot-swap protection circuitry (e.g., slew-rate limiting or backdrive prevention). For true hot-plug systems, external series resistors and TVS diodes are recommended. The SN74ABT827PWR itself will not latch up or damage under controlled insertion, but system-level protection remains the designer's responsibility.
Can the SN74ABT827PWR operate at 3.3 V supply?
No - the SN74ABT827PWR is specified only for 4.5 V to 5.5 V operation per its recommended conditions. At 3.3 V, VIH (2.0 V) and VIL (0.8 V) thresholds become unmet, resulting in undefined logic states and potential increased ICC. Its EPIC-IIB BiCMOS process is optimized for 5-V rail efficiency and speed. For 3.3-V systems, TI recommends the SN74LVC8T245PW or SN74ALVC16244, not the SN74ABT827PWR.
What is the thermal resistance (θJA) of the SN74ABT827PWR in its TSSOP-24 package?
The SN74ABT827PWR in the PW (TSSOP-24) package has a specified junction-to-ambient thermal resistance (θJA) of 120°C/W, measured per JEDEC JESD51 standards. This value assumes standard 2-layer PCB layout with minimal copper pour. With 2 oz copper and thermal vias under the exposed pad (if present), θJA can improve to ~60°C/W. Always calculate worst-case junction temperature using actual power dissipation and ambient conditions before finalizing SN74ABT827PWR thermal design.
Are unused inputs on the SN74ABT827PWR required to be terminated?
Yes - per Note 3 in the SN74ABT827PWR datasheet, all unused inputs must be held high or low to prevent floating. Floating OE1 or OE2 pins may cause intermittent 3-state behavior or increased ICC. Unused A inputs should be tied to GND or VCC (not left open), as their leakage current (±1 µA) could induce noise coupling. Proper termination ensures deterministic logic states, stable power consumption, and EMI compliance in the final SN74ABT827PWR application.
SN74ABT827PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- 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:
- 24-TSSOP
SN74ABT827PWR FAQ
1.How can I place an order for SN74ABT827PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT827PWR 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 SN74ABT827PWR reliable?
The price and inventory of SN74ABT827PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT827PWR is usually 5 days.
3.What payment methods are accepted for SN74ABT827PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT827PWR transactions.
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4.How is shipping managed for SN74ABT827PWR?
SN74ABT827PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT827PWR 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 SN74ABT827PWR?
For technical support, including SN74ABT827PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT827PWR requirements.
6.How does Aetrix verify that SN74ABT827PWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT827PWR 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 SN74ABT827PWR meets industry standards.
7.What is the process for return or replacement of SN74ABT827PWR?
All SN74ABT827PWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT827PWR, 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 SN74ABT827PWR part is unused and in its original packaging.
Return procedure for SN74ABT827PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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