My Inquiry
My Account
Texas Instruments SNJ54ABT2244W
- Part No.:
- SNJ54ABT2244W
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SNJ54ABT2244W.pdf
- Description:
- BUS DRIVER, ABT SERIES, 2-FUNC,
- Quantity:
- Payment:
- Shipping:
Inventory:300
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SNJ54ABT2244W from Texas Instruments is a military-grade octal noninverting buffer/line driver with 3-state outputs, designed for high-density memory address and bus-oriented applications. It features 25-Ω integrated series output resistors, ±12 mA output drive capability, and operates across –55°C to 125°C. Used in aerospace avionics data buses requiring robust signal integrity and thermal stability.
For engineers reviewing the SNJ54ABT2244W datasheet, SNJ54ABT2244W pinout, SNJ54ABT2244W application, or SNJ54ABT2244W equivalent, key selection criteria include military temperature range compliance, 3-state enable timing (tPZL/tPHZ), output ground bounce (VOLP < 1 V), and CFP package mechanical compatibility with hermetic sealing requirements.
Technical Context
This device implements dual 4-bit noninverting buffers with independent active-low 3-state enable inputs (1OE, 2OE) controlling two groups of four outputs each. Each output incorporates on-die 25-Ω series termination to suppress transmission-line reflections without external components.
Its EPIC-IIB BiCMOS process delivers low power dissipation while maintaining TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2 V) and rail-to-rail output swing under 12 mA sink load. Propagation delays are specified at 1–5.3 ns (tPLH/tPHL) with 1.1–2.1 ns enable/disable times into 50-pF loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL and CMOS systems without level-shifting. |
| IOL / IOH | 12 mA sink / –24 mA source - Supports direct interface to multiple TTL inputs or moderate-capacitance PCB traces. |
| tPLH / tPHL | 1 ns min / 4.3 ns typ - Enables reliable operation in high-speed address/data strobing up to ~100 MHz clock domains. |
| tPZL / tPHZ | 2.1 ns min / 7.3 ns max - Guarantees fast bus release and acquisition critical for time-multiplexed memory or peripheral interfaces. |
| VOLP (Ground Bounce) | < 1 V at VCC = 5 V - Minimizes noise coupling into shared ground planes during simultaneous output switching. |
| Operating Temp | –55°C to 125°C - Qualified per MIL-PRF-38535 for use in harsh-environment military and space platforms. |
| Output Series R | 25 Ω integrated - Eliminates need for discrete series termination resistors, reducing BOM count and layout area. |
Pinout & Package
The SNJ54ABT2244W is housed in a 20-pin Ceramic Flatpack (CFP-W) package with side-brazed leads, rated for hermetic sealing and high-reliability applications. Package dimensions: 13.97 mm × 13.97 mm × 3.56 mm (0.550″ × 0.550″ × 0.140″), compliant with MIL-STD-1835.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | 1OE, 2OE | Active-low 3-state enable inputs - Must be pulled high via resistor during power-up to ensure high-impedance state before initialization. |
| 2, 4, 6, 8, 13, 15, 17, 19 | 1A1–1A4, 2A1–2A4 | Buffer inputs - TTL-compatible; unused inputs must be tied to VCC or GND to prevent floating-induced noise. |
| 12, 14, 16, 18, 9, 7, 5, 3 | 1Y1–1Y4, 2Y1–2Y4 | Noninverting 3-state outputs - Include internal 25-Ω series resistance; capable of sinking 12 mA per output. |
| 10 | GND | Digital ground reference - Requires low-inductance connection to system ground plane for stable VOLP performance. |
| 20 | VCC | Positive supply - Decoupling capacitor (0.1 µF ceramic) required within 10 mm of pin for transient current handling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω output series resistors | Eliminates external termination components, reduces PCB routing complexity, and improves signal fidelity on FR-4 backplanes. |
| EPIC-IIB BiCMOS process | Reduces static power consumption by >50% versus legacy bipolar TTL while retaining full 5-V drive strength and speed. |
| Low output ground bounce (VOLP < 1 V) | Prevents logic errors in adjacent devices sharing common ground paths during high-frequency bus toggling. |
| Military temperature qualification (–55°C to 125°C) | Validated for deployment in guidance systems, radar processors, and satellite command modules exposed to extreme thermal cycling. |
| Independent dual 4-bit enable control | Enables selective activation of address vs. data bus segments, supporting partial bus isolation in fault-tolerant architectures. |
Applications
| Avionics Data Bus Interface | Secure Military Memory Subsystem |
|---|---|
Use Scenario: Interfacing FPGA-based mission computers to legacy MIL-STD-1553B remote terminal address decoders. IC Role / Device Role / Timing Role: Noninverting buffer isolating address lines between radiation-hardened processor and bus transceiver, with precise 3-state timing for arbitration. Use Value: Integrated 25-Ω termination ensures impedance-matched signaling over 30-cm ribbon cables, eliminating reflection-induced setup violations. | Use Scenario: Driving parallel SRAM address lines in encrypted tactical radio baseband processors operating in desert environments. IC Role / Device Role / Timing Role: Octal address driver enabling/disabling memory banks under secure boot firmware control via separate OE pins. Use Value: –55°C to 125°C rating guarantees uninterrupted operation during rapid thermal transients encountered in airborne electronic warfare pods. |
| Radar Signal Processing Backplane | Hardened Launch Vehicle Control Unit |
Use Scenario: Buffering ADC sample clock distribution across multi-board DSP chassis with strict skew requirements. IC Role / Device Role / Timing Role: Low-skew clock driver with matched propagation delay (tPLH/tPHL ≤ 4.3 ns) across all eight outputs. Use Value: Sub-1 ns delay variation enables synchronous sampling across 32-channel phased-array receivers without external deskew compensation. | Use Scenario: Isolating flight computer I/O from motor controller PWM signals in solid-fuel rocket telemetry systems. IC Role / Device Role / Timing Role: Bidirectional bus driver providing galvanic separation between digital control logic and high-noise power stages. Use Value: Hermetic CFP-W package prevents moisture ingress during humid launch-pad operations, ensuring long-term reliability under vibration and thermal shock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54ABT2244FK | Same electrical specs; LCCC package (20-pin ceramic leadless chip carrier) instead of CFP-W. | LCCC offers superior high-frequency performance but requires specialized reflow and inspection; less suitable for manual repair. | Select FK for ultra-high-speed designs where lead inductance must be minimized; W preferred for field-replaceable modules. |
| 5962-9467301QRA | MIL-PRF-38535 certified CDIP (J-package); identical logic function and temp range, but through-hole mounting. | J-package supports legacy board assembly and easier prototyping; larger footprint and higher parasitic capacitance than CFP-W. | Choose QRA when backward compatibility with existing DIP-based test fixtures or repair infrastructure is required. |
Compared with SNJ54ABT2244FK and 5962-9467301QRA, the SNJ54ABT2244W provides optimal balance of hermetic reliability, compact surface-mount form factor, and proven performance in vibration-prone aerospace deployments-making it the preferred choice for new high-integrity avionics designs.
Availability
SNJ54ABT2244W is available at Aetrix Electronics and suitable for avionics data buses, secure military memory subsystems, radar signal processing backplanes, and hardened launch vehicle control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SNJ54ABT2244W 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 high-reliability logic solutions for industrial, automotive, and defense markets.
The ABT family-including SNJ54ABT2244W-is engineered for high-speed, low-power 3-state bus interfacing in mission-critical systems demanding military-grade environmental resilience and signal integrity.
FAQ
What is the maximum operating temperature range for SNJ54ABT2244W?
The SNJ54ABT2244W is characterized for continuous operation from –55°C to 125°C, meeting MIL-PRF-38535 Class B requirements. This full military temperature range ensures functional reliability in extreme environments such as jet engine bays, satellite orbital thermal cycles, and artillery fire-control systems where ambient temperatures exceed commercial limits.
Does SNJ54ABT2244W require external series termination resistors?
No, SNJ54ABT2244W does not require external series termination resistors. Each output integrates a precisely trimmed 25-Ω series resistor to dampen transmission-line reflections-confirmed in the datasheet's "Output Ports Have Equivalent 25-Ω Series Resistors" feature statement. This eliminates BOM items and layout area typically needed for discrete termination.
How should the OE pins be handled during power-up to avoid bus contention?
To ensure high-impedance state during power-up or power-down, both 1OE and 2OE pins of SNJ54ABT2244W must be tied to VCC through pullup resistors. The minimum resistor value depends on the driver's current-sinking capability; TI recommends ≥1 kΩ for most implementations to guarantee fast, glitch-free enable sequencing before logic initialization.
What is the typical output ground bounce (VOLP) specification for SNJ54ABT2244W?
The typical output ground bounce (VOLP) for SNJ54ABT2244W is < 1 V at VCC = 5 V and TA = 25°C, as specified in the datasheet's "Key Features" section. This low VOLP minimizes noise coupling into shared ground networks during simultaneous output switching-critical for maintaining signal integrity in dense, multi-device military backplanes.
Is SNJ54ABT2244W RoHS-compliant?
SNJ54ABT2244W is not RoHS-compliant in its standard configuration. As a military-grade CFP-W device, it uses leaded solder and finishes per MIL-STD-1835 requirements. TI's packaging data confirms "Call TI" for lead/ball finish, indicating Pb-based construction necessary for hermetic seal reliability and thermal fatigue resistance in aerospace applications.
SNJ54ABT2244W Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SNJ54ABT2244W FAQ
1.How can I place an order for SNJ54ABT2244W through Aetrix?
Please submit a Request for Quotation (RFQ) for SNJ54ABT2244W 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 SNJ54ABT2244W reliable?
The price and inventory of SNJ54ABT2244W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54ABT2244W is usually 5 days.
3.What payment methods are accepted for SNJ54ABT2244W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54ABT2244W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SNJ54ABT2244W?
SNJ54ABT2244W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SNJ54ABT2244W 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 SNJ54ABT2244W?
For technical support, including SNJ54ABT2244W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54ABT2244W requirements.
6.How does Aetrix verify that SNJ54ABT2244W is sourced from the original manufacturer or authorized distributors?
All SNJ54ABT2244W 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 SNJ54ABT2244W meets industry standards.
7.What is the process for return or replacement of SNJ54ABT2244W?
All SNJ54ABT2244W units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54ABT2244W, 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 SNJ54ABT2244W part is unused and in its original packaging.
Return procedure for SNJ54ABT2244W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SNJ54ABT2244W 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…
