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Texas Instruments SN74ALVCH16244DGVR
- Part No.:
- SN74ALVCH16244DGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ALVCH16244DGVR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,261
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Product details
Overview
SN74ALVCH16244DGVR from Texas Instruments is a 16-bit non-inverting 3-state buffer/driver IC operating from 1.65 V to 3.6 V, delivering ±24-mA output drive at 3.3 V with 3 ns max propagation delay, used in memory address buffering, clock distribution, and bus interface applications.
For engineers reviewing the SN74ALVCH16244DGVR datasheet, SN74ALVCH16244DGVR pinout, SN74ALVCH16244DGVR application, or SN74ALVCH16244DGVR equivalent, key selection criteria include voltage range compatibility (1.65–3.6 V), bus-hold input capability eliminating external resistors, 48-pin TVSOP package footprint, and symmetrical active-low OE control per 4-bit group.
Technical Context
The SN74ALVCH16244DGVR implements four independent 4-bit buffer sections, each with true outputs and dedicated active-low output-enable (OE) inputs-1OE, 2OE, 3OE, and 4OE-enabling granular bus control. Its bus-hold circuitry actively maintains valid logic states on undriven inputs without external pullup/pulldown resistors.
Designed for high-density 3-state bus systems, it supports flexible configuration as one 16-bit, two 8-bit, or four 4-bit buffers. Input transition rate is limited to 10 ns/V, and power-up/down high-impedance integrity requires OE tied to VCC via a pullup resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - enables interoperability across mixed-voltage 1.8 V/2.5 V/3.3 V digital systems |
| Max Propagation Delay | 3 ns at 3.3 V - supports high-speed data paths in memory and clock distribution networks |
| Output Drive Strength | ±24 mA at 3.3 V - drives heavy capacitive loads and multiple CMOS inputs without signal degradation |
| Input Bus-Hold | Integrated - eliminates need for external biasing components, reducing BOM count and board space |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and computing applications |
| ESD Protection | 2000-V HBM, 200-V MM - ensures robustness during handling and system-level ESD events |
| Latch-Up Immunity | >250 mA per JESD 17 - prevents destructive latch-up under transient overvoltage conditions |
Pinout & Package
SN74ALVCH16244DGVR uses a 48-pin Thin Very Small Outline Package (TVSOP, DGV), measuring 12.6 mm × 6.2 mm × 1.2 mm (max height), JEDEC MO-153 compliant, with gull-wing leads and pin 1 marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low output enable | Independent control of four 4-bit buffer groups; all must be low to enable respective Y outputs |
| 1A1–4A4 | Data inputs | 16 buffered inputs, each with integrated bus-hold to retain state when floating |
| 1Y1–4Y4 | True 3-state outputs | 16 outputs; high-impedance when corresponding OE is high, else pass-through of A inputs |
| VCC (Pins 7, 21, 28, 42) | Power supply | Four distributed VCC pins reduce switching noise and improve power delivery integrity |
| GND (Pins 4, 10, 15, 25, 31, 37, 45, 47) | Ground reference | Eight GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 1.65 V–3.6 V operation allows seamless integration into multi-rail systems without level shifters |
| Bus-hold inputs | Eliminates external pull resistors on unused or unterminated data lines, simplifying layout and reducing component count |
| High-output drive | ±24-mA sink/source at 3.3 V supports fanout to ≥10 LVTTL loads or direct driving of transmission lines |
| Low propagation delay | 3 ns max tpd at 3.3 V enables use in sub-300 MHz clock/data paths without timing closure issues |
| Robust ESD/latch-up | JESD 22-compliant ESD (2000-V HBM) and JESD 17 latch-up immunity (>250 mA) ensure field reliability |
Applications
| Memory Address Buffering | Clock Distribution Network |
|---|---|
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or Flash devices sharing a common bus. IC Role / Device Role / Timing Role: 16-bit non-inverting buffer isolating controller outputs and strengthening signal integrity across parallel traces. Use Value: Prevents address skew and loading-induced timing violations with ±24-mA drive and 3 ns tpd. | Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADC, DAC, FPGA logic blocks). IC Role / Device Role / Timing Role: Low-skew, high-drive clock fanout buffer with independent OE control per quadrant. Use Value: Maintains tight skew budget and signal edge fidelity across 16 destinations using true outputs and bus-hold stability. |
| PCI/ISA Bus Interface | Industrial I/O Expansion |
Use Scenario: Isolating and buffering control/data signals between legacy PCI/ISA bus segments and modern host controllers. IC Role / Device Role / Timing Role: Bidirectional-capable 3-state buffer enabling shared-bus arbitration via OE gating. Use Value: Enables hot-swap-safe bus partitioning with high-impedance isolation and fast enable/disable times (4.1–5.7 ns). | Use Scenario: Expanding GPIO count on PLC or motion controller modules requiring robust noise immunity and wide-voltage support. IC Role / Device Role / Timing Role: Level-translating, high-drive buffer interfacing 3.3 V logic to 24 V industrial sensors/actuators via external drivers. Use Value: Operates reliably from 1.65 V up to 3.6 V and withstands industrial ESD transients without protection diodes. |
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 |
|---|---|---|---|
| SN74LVC16244ADGGR | Lower drive (±24 mA only at 3.3 V; ≤±16 mA at 2.5 V), no bus-hold, same 48-pin TSSOP (DGG) package | Requires external pull resistors on floating inputs; less suitable for unpopulated or dynamically reconfigured buses | Preferred where cost sensitivity outweighs bus-hold convenience and mixed-voltage operation is not required |
| 74ALVCH16244DLR | Same electrical specs but in 48-pin SSOP (DL) package - 32.4 mm width vs. DGV's 6.2 mm, higher thermal resistance (63°C/W vs. 58°C/W) | Used where legacy SSOP footprints exist or board assembly prefers tube packaging (25 pcs/tube vs. 2000 pcs/reel) | Select when PCB layout constraints mandate SSOP or procurement prefers small-batch tube delivery |
Compared with SN74LVC16244ADGGR, SN74ALVCH16244DGVR adds bus-hold and wider voltage tolerance; compared with 74ALVCH16244DLR, it offers 53% smaller footprint and better thermal performance in tape-and-reel logistics.
Availability
SN74ALVCH16244DGVR is available at Aetrix Electronics and suitable for memory subsystems, clock tree distribution, industrial I/O expansion, and legacy bus interface designs requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74ALVCH16244DGVR 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 expertise in high-performance interface and bus technologies.
The SN74ALVCH16244DGVR belongs to TI's Widebus™ family, engineered specifically to enhance density and speed in 3-state memory address drivers, clock fanout, and bus-oriented receivers/transmitters.
FAQ
What is the recommended power-up sequence for SN74ALVCH16244DGVR to ensure 3-state integrity?
To guarantee high-impedance outputs during power-up, tie all OE inputs (1OE–4OE) to VCC through a pullup resistor. The minimum value depends on the driver's current-sinking capability-TI recommends ≥10 kΩ for typical conditions. This prevents unintended output contention before system control asserts OE. The SN74ALVCH16244DGVR datasheet specifies this behavior explicitly in Section 6.1.
Does SN74ALVCH16244DGVR support mixed-voltage operation between input and output sides?
No-SN74ALVCH16244DGVR is a single-supply device with one VCC pin (1.65 V–3.6 V). All inputs and outputs are referenced to that same supply; it does not provide level-shifting functionality. For mixed-voltage translation, discrete solutions or dedicated level translators like TXB0108 must be used alongside SN74ALVCH16244DGVR.
Can bus-hold circuitry on SN74ALVCH16244DGVR be disabled or bypassed?
No-bus-hold is permanently enabled and internal; it cannot be disabled via configuration or external control. TI explicitly warns against adding external pullup/pulldown resistors when bus-hold is active, as they conflict and may cause excessive current draw or logic instability. The SN74ALVCH16244DGVR bus-hold strength is specified in the Electrical Characteristics table (II(hold) = ±45 µA at 2.3 V).
What is the thermal resistance (θJA) of the SN74ALVCH16244DGVR in its TVSOP package?
The junction-to-ambient thermal resistance (θJA) for SN74ALVCH16244DGVR in the 48-pin TVSOP (DGV) package is 58°C/W, as confirmed in the Absolute Maximum Ratings table. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad); actual performance improves with enhanced PCB copper area or thermal vias.
Is SN74ALVCH16244DGVR RoHS compliant and lead-free?
Yes-SN74ALVCH16244DGVR is RoHS compliant and features a NIPDAU (nickel-palladium-gold) lead finish. Its MSL rating is Level-1 at 260°C peak reflow, and it ships in tape-and-reel packaging (2000 units per reel) with part marking "VH244" per TI's Package Option Addendum.
SN74ALVCH16244DGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVCH
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74ALVCH16244DGVR FAQ
1.How can I place an order for SN74ALVCH16244DGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVCH16244DGVR 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 SN74ALVCH16244DGVR reliable?
The price and inventory of SN74ALVCH16244DGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVCH16244DGVR is usually 5 days.
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Once your SN74ALVCH16244DGVR 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 SN74ALVCH16244DGVR?
For technical support, including SN74ALVCH16244DGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVCH16244DGVR requirements.
6.How does Aetrix verify that SN74ALVCH16244DGVR is sourced from the original manufacturer or authorized distributors?
All SN74ALVCH16244DGVR 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 SN74ALVCH16244DGVR meets industry standards.
7.What is the process for return or replacement of SN74ALVCH16244DGVR?
All SN74ALVCH16244DGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVCH16244DGVR, 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 SN74ALVCH16244DGVR part is unused and in its original packaging.
Return procedure for SN74ALVCH16244DGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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