My Inquiry
My Account
Texas Instruments SN74ALVTH162244LR
- Part No.:
- SN74ALVTH162244LR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ALVTH162244LR.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,602
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ALVTH162244LR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V operation and mixed-mode (5-V input-tolerant) interfacing. It features bus-hold circuitry on all data inputs, integrated 30-Ω output series resistors, and auto 3-state functionality that disables outputs when VO exceeds VCC + 0.5 V - enabling robust signal integrity in backplane and memory interface applications.
For engineers reviewing the SN74ALVTH162244LR datasheet, SN74ALVTH162244LR pinout, SN74ALVTH162244LR application, or SN74ALVTH162244LR equivalent, key selection criteria include its 3.3-V-compatible 12-mA drive strength, ±100 µA high-impedance leakage at VCC ≤ 1.2 V, 3.3 ns max propagation delay (CL = 50 pF), and TSSOP-48 (DGG) package with distributed power/ground pins to suppress switching noise.
Technical Context
This device implements four independent 4-bit buffer sections, each with symmetrical active-low output-enable (OE) control and true (noninverting) logic. Its Advanced BiCMOS Technology (ABT) architecture delivers low static power dissipation while supporting live insertion via power-off output disable and high-impedance state during power-up/down transitions.
The integrated bus-hold circuit eliminates external pullup/pulldown resistors by actively sustaining valid logic levels on floating inputs, and the auto 3-state feature prevents bus contention when outputs exceed VCC + 0.5 V - critical for hot-swap and mixed-voltage domain bridging between 3.3-V logic and legacy 5-V subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports dual-supply interoperability and brown-out tolerance down to 2.3 V. |
| IOL / IOH | 12 mA sink / –12 mA source at VCC = 3.3 V - sufficient to drive standard TTL loads and stub-loaded transmission lines. |
| tPLH / tPHL | ≤3.3 ns (CL = 50 pF, VCC = 3.3 V) - enables reliable operation in high-speed address/data bus applications up to ~150 MHz. |
| Bus-Hold Current | IBHL = 75 µA, IBHH = –75 µA at VCC = 3 V - actively holds floating inputs without external components, reducing BOM count and layout area. |
| VOL / VOH | 0.8 V max at IOL = 12 mA / 2.0 V min at IOH = –12 mA - ensures noise margins >0.4 V in 3.3-V LVTTL systems. |
| ICC (Active) | 3.2–5.0 mA at VCC = 3.6 V - low quiescent current enables use in power-constrained embedded controllers and peripheral interfaces. |
| ESD Rating | 2000 V HBM, 200 V MM, 1000 V CDM - meets industrial-grade robustness requirements for board-level handling and field operation. |
Pinout & Package
SN74ALVTH162244LR is packaged in a 48-pin Thin Shrink Small-Outline Package (TSSOP, DGG), measuring 12.6 mm × 6.2 mm × 1.2 mm max height, with gull-wing leads and JEDEC MO-153 compliance. The pinout follows a flow-through architecture with distributed VCC/GND pairs to minimize simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs (16 total) | Accept 5-V-tolerant signals; each has bus-hold circuitry to prevent floating states. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True buffered outputs (16 total) | 3-state capable; include built-in 30-Ω series termination to reduce overshoot/undershoot. |
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable controls (4 total) | Independent per 4-bit section; enable/disable groups without affecting others. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed across package to lower impedance path and reduce ground bounce. |
| GND (Pins 4, 10, 15, 21, 27, 32, 37, 45) | Ground reference | Eight GND pins minimize return-path inductance and improve signal integrity at high speed. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage operation | 5-V-tolerant inputs with 2.3–3.6-V VCC supply - enables direct interfacing between 3.3-V logic and 5-V peripherals without level shifters. |
| Auto 3-state protection | Outputs automatically enter high-impedance when VO > VCC + 0.5 V - prevents bus contention during hot-plug or voltage sequencing faults. |
| Integrated bus-hold | Eliminates need for external pullup/pulldown resistors on all 16 data inputs - reduces PCB area, BOM cost, and routing complexity. |
| Output series resistance | 30-Ω on-chip termination - suppresses ringing and EMI without discrete resistors, simplifying layout for controlled-impedance traces. |
| Live-insertion support | Outputs disabled when VCC = 0 V - allows safe insertion/removal in powered-backplane systems without damaging downstream logic. |
Applications
| Memory Interface | Backplane Bus Driver |
|---|---|
Use Scenario: Driving address/data lines between a 3.3-V microcontroller and parallel SRAM or Flash memory operating at 5-V. IC Role / Device Role / Timing Role: Level-translating noninverting buffer with 3-state control for bidirectional bus arbitration. Use Value: Eliminates external level shifters and pull resistors while maintaining <3.3 ns propagation delay and 12-mA drive capability. | Use Scenario: Interfacing multiple 3.3-V processor modules to a shared 5-V backplane in modular industrial controllers. IC Role / Device Role / Timing Role: Hot-swappable bus driver with auto 3-state and power-down high-Z to prevent bus conflicts during module insertion. Use Value: Enables live insertion without system reset; bus-hold maintains valid logic on unconnected slots during expansion. |
| Legacy System Upgrades | FPGA I/O Expansion |
Use Scenario: Replacing obsolete 5-V TTL buffers in aging test equipment while retaining existing 5-V signal paths. IC Role / Device Role / Timing Role: Drop-in compatible 3.3-V buffer with 5-V input tolerance and identical pinout to legacy '244 family devices. Use Value: Reduces power consumption by >50% vs. 5-V parts while preserving signal timing and interconnect compatibility. | Use Scenario: Extending FPGA GPIO count to drive off-board peripherals requiring higher drive strength or voltage translation. IC Role / Device Role / Timing Role: High-drive, low-skew buffer stage between FPGA I/O banks and external sensors, displays, or communication ICs. Use Value: On-die 30-Ω series resistors match trace impedance, reducing signal reflections and easing timing closure in high-speed digital interfaces. |
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 |
|---|---|---|---|
| SN74LVC162244ADGGR | Lower drive (24 mA sink at 3.3 V), no bus-hold, no auto 3-state, same TSSOP-48 footprint. | Suitable for clean 3.3-V-only systems without floating inputs or hot-swap requirements. | Select when cost sensitivity outweighs need for bus-hold or 5-V tolerance; requires external pull resistors. |
| SN74AVC162244DGGR | 1.8-V/2.5-V/3.3-V operation, 12-mA drive, no bus-hold, no auto 3-state, same pinout. | Better suited for ultra-low-voltage domains (e.g., battery-powered edge nodes), but lacks mixed-mode robustness. | Choose for multi-rail designs where VCC may drop below 2.3 V; verify OE control behavior under partial power conditions. |
Compared with SN74LVC162244ADGGR and SN74AVC162244DGGR, SN74ALVTH162244LR uniquely combines 5-V input tolerance, bus-hold, and auto 3-state in a single 3.3-V buffer - making it the only option among the three qualified for legacy interface upgrades and hot-swap-capable backplanes.
Availability
SN74ALVTH162244LR is available at Aetrix Electronics and suitable for memory interface design, backplane bus driving, legacy system upgrades, and FPGA I/O expansion requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74ALVTH162244LR 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 for industrial, automotive, and communications markets.
The ALVTH logic family targets high-speed, low-power, mixed-voltage interface applications - specifically engineered to bridge legacy 5-V systems with modern 2.5-V/3.3-V digital logic while maintaining signal integrity and system reliability.
FAQ
What is the maximum operating temperature range for the SN74ALVTH162244LR?
The SN74ALVTH162244LR is characterized for operation from –40°C to +85°C, matching the commercial/industrial temperature grade. This range is confirmed in the SCES074E datasheet under recommended operating conditions for the SN74ALVTH162244 variant, which includes the SN74ALVTH162244LR package variant.
Does the SN74ALVTH162244LR support 5-V input signals while operating at 3.3-V VCC?
Yes, the SN74ALVTH162244LR supports 5-V-tolerant inputs across its full VCC range of 2.3 V to 3.6 V. Input voltage VI may reach 5.5 V regardless of VCC level, as specified in the absolute maximum ratings and verified in the recommended operating conditions tables for both 2.5-V and 3.3-V operation.
How does the auto 3-state function work in the SN74ALVTH162244LR?
The auto 3-state function in the SN74ALVTH162244LR disables outputs when any output voltage exceeds VCC + 0.5 V, forcing them into high-impedance mode. This behavior is explicitly documented in the datasheet's "Features" section and prevents bus contention during overvoltage events or hot-swap transitions without requiring external control logic.
What package type is used for the SN74ALVTH162244LR?
The SN74ALVTH162244LR uses the TSSOP-48 package (JEDEC MO-153 compliant, TI designation DGG), with dimensions 12.6 mm × 6.2 mm × 1.2 mm max height. This is confirmed in the Package Option Addendum, where SN74ALVTH162244LR is explicitly listed as having "TSSOP (DGG) | 48" packaging.
Is bus-hold functionality present on all input pins of the SN74ALVTH162244LR?
Yes, bus-hold circuitry is provided on all 16 data input pins (1A1–4A4) of the SN74ALVTH162244LR, as stated in the device description and electrical characteristics tables. The datasheet specifies IBHL and IBHH parameters for these inputs, confirming active bus-hold operation across the full operating VCC range.
SN74ALVTH162244LR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 8mA, 12mA; 12mA, 12mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74ALVTH162244LR FAQ
1.How can I place an order for SN74ALVTH162244LR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVTH162244LR 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 SN74ALVTH162244LR reliable?
The price and inventory of SN74ALVTH162244LR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH162244LR is usually 5 days.
3.What payment methods are accepted for SN74ALVTH162244LR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVTH162244LR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALVTH162244LR?
SN74ALVTH162244LR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALVTH162244LR 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 SN74ALVTH162244LR?
For technical support, including SN74ALVTH162244LR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH162244LR requirements.
6.How does Aetrix verify that SN74ALVTH162244LR is sourced from the original manufacturer or authorized distributors?
All SN74ALVTH162244LR 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 SN74ALVTH162244LR meets industry standards.
7.What is the process for return or replacement of SN74ALVTH162244LR?
All SN74ALVTH162244LR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH162244LR, 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 SN74ALVTH162244LR part is unused and in its original packaging.
Return procedure for SN74ALVTH162244LR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ALVTH162244LR 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…
