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Texas Instruments SN74LVC162244DL
- Part No.:
- SN74LVC162244DL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC162244DL.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,437
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Product details
Overview
SN74LVC162244DL from Texas Instruments is a 16-bit noninverting 3-state buffer/driver optimized for 2.7–3.6 V operation, featuring bus-hold inputs, integrated 26-Ω output series resistors, and ±12 mA drive capability at 3 V. It serves as a high-density memory address or clock driver in industrial control backplanes and data acquisition systems.
For engineers reviewing the SN74LVC162244DL datasheet, SN74LVC162244DL pinout, SN74LVC162244DL application, or SN74LVC162244DL equivalent, key selection criteria include 3-state timing (tdis/ten ≤ 10 ns), bus-hold functionality eliminating external biasing, output impedance matching for signal integrity, and thermal performance in DL-package applications requiring >1 W dissipation.
Technical Context
This device implements four independent 4-bit buffers with symmetrical active-low OE inputs per group and true (noninverting) outputs. Each output includes on-die 26-Ω series termination to suppress overshoot/undershoot without external components.
Bus-hold circuitry actively maintains valid logic levels on floating inputs, and absolute maximum ratings support VCC up to 4.6 V with latch-up immunity exceeding 250 mA per JEDEC JESD-17 - critical for mixed-voltage board interfaces and hot-swap environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - ensures compatibility with 3.3 V LVTTL and mixed-supply systems |
| IOL / IOH | ±12 mA at VCC = 3 V - supports direct driving of multiple LVC/LVTTL loads without fanout buffers |
| tpd / tdis / ten | 1.5–8 ns (VCC = 2.7–3.3 V, CL = 50 pF) - enables reliable operation in sub-10 ns timing-critical buses |
| Bus-Hold Current | ±75 µA at VI = 2 V - maintains stable input state during power sequencing or unconnected traces |
| Output Series R | 26 Ω (typical) - reduces EMI and transmission-line reflections on PCB traces up to 10 cm |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature range without derating |
| ICC (max) | 500 µA (active, one input at VCC–0.6 V) - enables low-static-power system-level standby modes |
Pinout & Package
SN74LVC162244DL uses a 48-pin plastic shrink small-outline (DL) package measuring 11.4 mm × 11.4 mm × 2.05 mm (300-mil body width), with 0.5-mm lead pitch and exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable (per 4-bit group) | Independent control of each buffer quadrant; must be pulled high via resistor during power-up to ensure Hi-Z state |
| 1A1–1A4, 2A1–2A4, etc. | Input terminals (16 total) | Bus-hold enabled; no external pullup/pulldown required even when unused |
| 1Y1–1Y4, 2Y1–2Y4, etc. | True (noninverting) 3-state outputs (16 total) | Integrated 26-Ω series resistor per output; sinks/sourcing up to ±12 mA |
| VCC (Pins 7, 18, 31, 42) | Supply voltage | Four dedicated VCC pins reduce IR drop and improve noise immunity across wide bus |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths for all 16 drivers |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 26-Ω output series resistors | Eliminates need for 16 discrete SMT resistors, reducing BOM count and layout area by ~25 mm² |
| Bus-hold on all 16 inputs | Maintains valid logic state during hot-plug, test probe contact loss, or unpopulated slots without external biasing |
| Symmetrical active-low OE per 4-bit group | Enables granular bus partitioning - e.g., isolate memory address vs. data lanes without additional logic |
| Low ground bounce (VOLP < 0.8 V) | Prevents false triggering of adjacent CMOS inputs during simultaneous switching of ≥8 outputs |
| High noise immunity (VOHV > 2 V) | Ensures robust high-level recognition despite transient coupling on shared VCC/GND planes |
Applications
| Industrial Backplane Interface | Memory Address Buffering |
|---|---|
Use Scenario: Isolating CPU address lines from multi-slot industrial backplane with variable load capacitance and long trace runs. IC Role / Device Role / Timing Role: Noninverting 3-state buffer with per-group OE control, providing timing-aligned drive to up to 16 parallel slots. Use Value: Integrated 26-Ω resistors suppress ringing on 15-cm traces; bus-hold prevents floating states during slot insertion/removal. |
Use Scenario: Driving 16-bit address bus to SRAM or Flash in embedded controller with limited PCB real estate. IC Role / Device Role / Timing Role: High-density 16-bit buffer enabling single-chip replacement of four 74LVC244s, reducing propagation delay skew. Use Value: 1.5 ns min tpd and matched group delays ensure setup/hold compliance across full address width at 66 MHz. |
| Clock Distribution Network | Data Acquisition Bus Driver |
Use Scenario: Fan-out of system clock to multiple ADCs, DACs, and FPGA peripherals with tight skew requirements. IC Role / Device Role / Timing Role: Low-skew, noninverting driver with controlled edge rates (10 ns/V max dV/dt) minimizing jitter injection. Use Value: VOHV > 2 V and VOLP < 0.8 V maintain clean logic thresholds despite 100+ pF aggregate load and shared supply noise. |
Use Scenario: Interfacing 16-bit parallel ADC output to microcontroller in noisy factory-floor instrumentation. IC Role / Device Role / Timing Role: 3-state bidirectional-capable buffer (with OE-controlled direction) isolating ADC data bus during conversion cycles. Use Value: ±12 mA drive strength sustains signal integrity over 8-inch ribbon cable; bus-hold prevents metastability during sampling gaps. |
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 |
|---|---|---|---|
| SN74LVC16244DGGR | Thin shrink small-outline (DGG) package; 1 W max power dissipation vs. 1.4 W for DL | Better suited for space-constrained designs but requires thermal derating above 65°C ambient | Select DGG for compact layouts; DL preferred where board-level heat spreading supports higher continuous drive |
| 74ALVC162244TTR | STMicroelectronics variant; identical logic function but lower IOL (8 mA @ 2.5 V) and no bus-hold | Requires external pullups on unused inputs; unsuitable for hot-plug or floating-bus scenarios | Use only in fixed-configuration systems with fully driven inputs and strict cost targets |
Compared with SN74LVC162244DL, the DGG alternative trades thermal headroom for footprint reduction, while the ALVC variant sacrifices bus-hold and drive strength - making SN74LVC162244DL the optimal choice for industrial backplanes requiring robustness, density, and plug-and-play reliability.
Availability
SN74LVC162244DL is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory address buffering, clock distribution networks, and data acquisition bus drivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC162244DL 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-reliability interface ICs.
The SN74LVC162244DL belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically to increase logic density and signal integrity in memory, clock, and bus-oriented systems operating at 3.3 V.
FAQ
What is the recommended power-up sequence for SN74LVC162244DL to ensure outputs remain in high-impedance state?
TI specifies that OE inputs must be held high during power-up to guarantee 3-state behavior. For SN74LVC162244DL, tie each OE pin (1OE–4OE) to VCC through a pullup resistor; minimum value is determined by the driver's current-sinking capability - typically 10 kΩ suffices for most applications. This prevents unintended output activation before system initialization completes.
Does SN74LVC162244DL support mixed-voltage interfacing, such as 3.3 V outputs driving 2.5 V inputs?
Yes, SN74LVC162244DL supports mixed-voltage operation: its VOH exceeds 2.4 V at VCC = 3.3 V and IOL = –6 mA, comfortably exceeding the VIH threshold (typically 2.0 V) of 2.5 V LVTTL or LVCMOS receivers. However, ensure the driven device's absolute maximum input voltage rating accommodates 3.3 V signals.
How does the bus-hold feature in SN74LVC162244DL affect input leakage current specifications?
The bus-hold circuitry in SN74LVC162244DL introduces ±75 µA hold current at VI = 2 V (per input), which is significantly higher than standard input leakage (±5 µA). This intentional current ensures stable logic retention but must be accounted for in ultra-low-power designs where cumulative leakage across 16 inputs could exceed 1.2 mA.
Can SN74LVC162244DL replace older 74ACT or 74AS logic in existing designs?
SN74LVC162244DL is not a direct drop-in replacement for 74ACT/74AS due to different VCC ranges (2.7–3.6 V vs. 4.5–5.5 V) and lower drive strength (±12 mA vs. ±24 mA). However, it can be used in upgraded 3.3 V systems where reduced power, smaller package, and bus-hold add value - provided level-shifting or redesign accommodates the voltage shift.
What is the thermal performance difference between SN74LVC162244DL and the DGG-package version?
SN74LVC162244DL has a higher thermal power limit: 1.4 W (at TA = 55°C, still air) versus 1 W for the DGG variant. This allows SN74LVC162244DL to sustain full 16-bit drive at elevated ambient temperatures without derating, making it preferable for thermally constrained industrial enclosures where airflow is limited.
SN74LVC162244DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVC162244DL FAQ
1.How can I place an order for SN74LVC162244DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC162244DL 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 SN74LVC162244DL reliable?
The price and inventory of SN74LVC162244DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC162244DL is usually 5 days.
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SN74LVC162244DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC162244DL 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 SN74LVC162244DL?
For technical support, including SN74LVC162244DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC162244DL requirements.
6.How does Aetrix verify that SN74LVC162244DL is sourced from the original manufacturer or authorized distributors?
All SN74LVC162244DL 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 SN74LVC162244DL meets industry standards.
7.What is the process for return or replacement of SN74LVC162244DL?
All SN74LVC162244DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC162244DL, 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 SN74LVC162244DL part is unused and in its original packaging.
Return procedure for SN74LVC162244DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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