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Texas Instruments SN74ABT16244ADGVR
- Part No.:
- SN74ABT16244ADGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT16244ADGVR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:213
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Product details
Overview
SN74ABT16244ADGVR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs in a 48-pin TVSOP (DGV) package, rated for –40°C to 85°C operation. It delivers high-drive capability (–32 mA IOH / 64 mA IOL), low output ground bounce (<1 V), and distributed VCC/GND pinning for noise suppression-used in memory address buffering, clock distribution, and bus-transceiver interfaces in industrial control backplanes.
For engineers reviewing the SN74ABT16244ADGVR datasheet, SN74ABT16244ADGVR pinout, SN74ABT16244ADGVR application, or SN74ABT16244ADGVR equivalent, key selection criteria include its 3-state enable timing (tPZH/tPLZ ≤ 4.8 ns), flow-through pin architecture, EPIC-IIB™ BiCMOS process for low power, and compatibility with 5-V TTL/CMOS logic systems requiring high-density bus isolation.
Technical Context
This device implements four independent 4-bit noninverting buffers, each with active-low 3-state output-enable (OE) control. All inputs accept standard TTL voltage thresholds (VIL = 0.8 V, VIH = 2 V) and exhibit low input capacitance (Ci = 3 pF) and leakage (±1 µA).
Output switching adheres to defined propagation delays (tPLH/tPHL ≤ 3.5 ns at VCC = 5 V, CL = 50 pF) and fast enable/disable transitions (tPZH/tPLZ ≤ 4.8 ns). The distributed VCC/GND layout and flow-through pinout minimize simultaneous switching noise and simplify PCB routing in high-speed parallel bus applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation across industrial 5-V rail tolerances without level-shifting. |
| Output Drive | –32 mA IOH / 64 mA IOL - supports direct driving of heavy capacitive loads (e.g., >100 pF traces or multiple TTL inputs) without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 3.5 ns - enables reliable 100+ MHz bus operation under typical load conditions (CL = 50 pF). |
| 3-State Enable Time | tPZH/tPLZ ≤ 4.8 ns - guarantees rapid bus arbitration and prevents contention during hot-swap or dynamic reconfiguration. |
| Input Thresholds | VIH = 2 V, VIL = 0.8 V - fully compatible with legacy 5-V TTL logic families and mixed-voltage system interfacing. |
| Thermal Impedance | θJA = 93 °C/W (DGV) - allows sustained 16-bit switching at ambient up to 85°C with minimal heatsinking. |
| ESD Rating | Exceeds JESD 70 latch-up immunity (>500 mA) - ensures resilience against board-level ESD events in manufacturing and field environments. |
Pinout & Package
SN74ABT16244ADGVR uses a 48-pin Thin Very Small-Outline Package (TVSOP, DGV), 7.1 mm × 4.4 mm body, 0.4 mm pitch, 1.2 mm max height, JEDEC MO-153 compliant. Pin 1 located at top-left corner (Q1 quadrant), with gage plane defined per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control | Independent gating per 4-bit section; tied high via pullup for safe power-up high-impedance state. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Buffer inputs | True (noninverting) inputs accepting TTL/CMOS logic levels; all unused inputs must be tied to VCC or GND. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | 3-state buffered outputs | High-drive outputs with symmetrical sourcing/sinking; enter high-Z when corresponding OE is high. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed VCC pins reduce IR drop and switching noise across the 16-bit bus interface. |
| GND (Pins 4, 10, 15, 21, 27, 32, 37, 45) | Ground reference | Eight dedicated GND pins provide low-inductance return paths, critical for signal integrity at >50 MHz. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB™ BiCMOS process | Reduces static and dynamic power vs. standard bipolar while retaining TTL drive strength and speed. |
| Flow-through pin architecture | Input and output pins aligned on opposite sides (e.g., A1–A4 left, Y1–Y4 right), enabling straight PCB trace routing and minimizing crosstalk. |
| Distributed VCC/GND | Four VCC and eight GND pins interleaved across the package perimeter suppress simultaneous switching noise in multi-bit buses. |
| High-impedance power-up default | OE pins internally pulled high during power ramp; external pullup resistor ensures safe 3-state until firmware asserts OE. |
| Output ground bounce <1 V | Minimizes false logic transitions on shared ground planes when multiple outputs switch simultaneously. |
Applications
| Memory Address Buffering | Clock Distribution Network |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a dense PCB. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address bus from memory subsystem; enables bank-select multiplexing. Use Value: High drive (64 mA IOL) overcomes trace capacitance; fast tPLH/tPHL ≤ 3.5 ns maintains setup/hold margins at 25-MHz bus rates. | Use Scenario: Fan-out of a master system clock to multiple synchronous peripherals (ADCs, DACs, FPGAs) with matched skew. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with independent OE control per 4-bit group for dynamic clock gating. Use Value: Distributed VCC/GND and flow-through layout minimize jitter; tPZH/tPLZ ≤ 4.8 ns enables precise clock enable timing. |
| Industrial Backplane Interface | Legacy Bus Transceiver |
Use Scenario: Isolating and strengthening data/address/control signals between CPU module and I/O expansion slots in PLC chassis. IC Role / Device Role / Timing Role: 16-bit bidirectional buffer (with external direction control) supporting hot-plug-capable backplane communication. Use Value: Latch-up immunity >500 mA protects against field-induced faults; 4.5–5.5 V supply range accommodates aging 5-V rails. | Use Scenario: Interfacing modern microcontrollers to legacy ISA or VME bus peripherals requiring TTL-compatible drive strength. IC Role / Device Role / Timing Role: Level-translation and drive-boosting buffer for unidirectional data path segments (e.g., CPU → peripheral registers). Use Value: True TTL input thresholds (VIH = 2 V) ensure compatibility with older bus drivers; –32 mA IOH drives long stubs reliably. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16244ADGGR | TSSOP-48 (DGG) package; θJA = 89 °C/W; identical electrical specs and pinout. | Slightly larger footprint (7.9 mm × 4.5 mm vs. 7.1 mm × 4.4 mm); same thermal performance margin at 85°C ambient. | Select DGGR for legacy board designs using TSSOP land patterns or where slightly higher thermal mass is acceptable. |
| SN74ABT16244ADL | SSOP-48 (DL) package; θJA = 94 °C/W; identical logic function and DC/AC specs. | Wider body (15.4 mm × 7.5 mm); requires more PCB area but offers enhanced mechanical rigidity for high-vibration environments. | Choose DL for industrial equipment subject to shock/vibration where TVSOP mechanical retention is insufficient. |
Compared with SN74ABT16244ADGGR and SN74ABT16244ADL, the SN74ABT16244ADGVR provides the smallest PCB footprint and lowest profile (1.2 mm height), making it optimal for space-constrained embedded modules-while maintaining identical timing, drive, and logic behavior across all three variants.
Availability
SN74ABT16244ADGVR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, and clock distribution networks requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ABT16244ADGVR 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 delivering analog, embedded processing, and logic solutions with emphasis on reliability, scalability, and broad ecosystem support.
The SN74ABT16244A series belongs to TI's Widebus™ family of high-speed bus-interface logic, engineered specifically for dense, noise-sensitive 5-V systems requiring high-drive 3-state buffering in memory, clock, and bus-oriented applications.
FAQ
What is the operating temperature range for the SN74ABT16244ADGVR?
The SN74ABT16244ADGVR is characterized for operation from –40°C to +85°C ambient temperature. This industrial-grade rating ensures reliable performance in factory automation, motor control, and outdoor embedded systems where thermal cycling and extended temperature exposure occur. The SN74ABT16244ADGVR does not support the extended military range (–55°C to 125°C) offered by the SN54ABT16244 variant.
Does the SN74ABT16244ADGVR require external pull-up resistors on OE pins?
Yes-the SN74ABT16244ADGVR OE pins (1OE–4OE) must be tied to VCC through an external pull-up resistor to ensure high-impedance outputs during power-up or power-down. TI specifies this requirement to prevent bus contention; the minimum resistor value depends on the driver's current-sinking capability, typically 1–10 kΩ for standard 5-V systems. The SN74ABT16244ADGVR has no internal pull-ups.
Can the SN74ABT16244ADGVR be used as an 8-bit or 4-bit buffer instead of 16-bit?
Yes-the SN74ABT16244ADGVR contains four independent 4-bit sections (1A/1Y, 2A/2Y, 3A/3Y, 4A/4Y), each with dedicated OE control. It can be configured as four separate 4-bit buffers, two 8-bit buffers (e.g., OE1+OE2 for first 8 bits), or one full 16-bit buffer. Unused inputs must be tied to VCC or GND per TI's SCBA004 guidance to prevent floating-node oscillation and excess current draw in the SN74ABT16244ADGVR.
What is the maximum capacitive load the SN74ABT16244ADGVR can drive reliably?
The SN74ABT16244ADGVR switching characteristics (tPLH, tPHL, tPZH, tPLZ) are specified with CL = 50 pF. While it can drive heavier loads due to its 64-mA IOL capability, timing margins degrade linearly beyond that point. For reliable operation above 50 pF-such as long traces or multiple fanouts-designers should verify setup/hold timing in their specific layout and may need series termination. The SN74ABT16244ADGVR's low output impedance helps mitigate ringing but does not eliminate trace-length limitations.
Is the SN74ABT16244ADGVR pin-compatible with other packages in the same family?
Yes-the SN74ABT16244ADGVR (TVSOP/DGV), SN74ABT16244ADGGR (TSSOP/DGG), and SN74ABT16244ADL (SSOP/DL) share identical pinout, logic function, and electrical specifications. They differ only in mechanical dimensions, thermal resistance, and tape-and-reel packaging. No PCB redesign is needed when migrating among these packages; the SN74ABT16244ADGVR replaces DGGR or DL variants directly in layouts supporting its smaller footprint and lower profile.
SN74ABT16244ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- 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:
- 48-TVSOP
SN74ABT16244ADGVR FAQ
1.How can I place an order for SN74ABT16244ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16244ADGVR 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 SN74ABT16244ADGVR reliable?
The price and inventory of SN74ABT16244ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16244ADGVR is usually 5 days.
3.What payment methods are accepted for SN74ABT16244ADGVR?
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4.How is shipping managed for SN74ABT16244ADGVR?
SN74ABT16244ADGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16244ADGVR 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 SN74ABT16244ADGVR?
For technical support, including SN74ABT16244ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16244ADGVR requirements.
6.How does Aetrix verify that SN74ABT16244ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16244ADGVR 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 SN74ABT16244ADGVR meets industry standards.
7.What is the process for return or replacement of SN74ABT16244ADGVR?
All SN74ABT16244ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16244ADGVR, 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 SN74ABT16244ADGVR part is unused and in its original packaging.
Return procedure for SN74ABT16244ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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