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Texas Instruments SN74ALS35ADRG4
- Part No.:
- SN74ALS35ADRG4
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74ALS35ADRG4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,256
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Product details
Overview
SN74ALS35ADRG4 from Texas Instruments is a hex noninverting buffer with open-collector outputs, designed for wired-OR/AND logic interfacing in TTL-compatible systems. It operates from 4.5 V to 5.5 V, delivers 8 mA low-level output current, supports 0°C to 70°C ambient operation, and features propagation delays as low as 2 ns (tPHL) and up to 50 ns (tPLH). It is used in bus interface, level translation, and active-low enable circuits.
For engineers reviewing the SN74ALS35ADRG4 datasheet, SN74ALS35ADRG4 pinout, SN74ALS35ADRG4 application, or SN74ALS35ADRG4 equivalent, key selection criteria include open-collector drive capability, TTL input compatibility, SOIC-14 thermal and layout constraints, and legacy system replacement requirements.
Technical Context
The SN74ALS35ADRG4 implements six independent positive-logic buffers (Y = A) with open-collector outputs requiring external pull-up resistors. Its architecture enables direct wired-OR of multiple outputs without external logic gates, supporting active-low signaling and higher VOH generation via external VCC rail selection.
It is built on Advanced Low-Power Schottky (ALS) bipolar technology, delivering improved speed-power trade-offs over standard LS logic. Input thresholds are VIH ≥ 2 V and VIL ≤ 0.8 V, ensuring robust noise immunity in mixed-logic environments while maintaining full TTL compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex noninverter (Y = A), open-collector outputs |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures stable operation across standard 5 V ±10% rails |
| Output Drive (IOL) | 8 mA - sufficient to sink standard TTL loads or drive LEDs directly |
| Propagation Delay (tPHL) | 2 ns min / 14 ns max - enables high-speed bus arbitration and timing-critical enable paths |
| Input Thresholds | VIH ≥ 2 V, VIL ≤ 0.8 V - guarantees reliable recognition of TTL logic levels |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade industrial control and instrumentation |
| Package | SOIC-14 (D package), 1.75 mm max height - compatible with automated SMT assembly and space-constrained PCBs |
Pinout & Package
SN74ALS35ADRG4 is housed in a 14-pin Small Outline Integrated Circuit (SOIC) package with 3.9 mm body width and 1.27 mm lead pitch. Pin 1 is marked by a beveled corner or dot; the device uses standard D-package pinout orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (1A–6A) | Independent TTL-compatible digital inputs; each drives one buffer stage |
| 2, 4, 6, 8, 10, 12 | Output (1Y–6Y) | Open-collector outputs requiring external pull-up; support wired-OR/AND |
| 7 | GND | Ground reference for all internal circuitry and output sinking paths |
| 14 | VCC | Positive supply rail (4.5–5.5 V); powers internal ALS logic and defines pull-up voltage ceiling |
Key Features
| Feature | Design Value |
|---|---|
| Wired-OR/AND Capability | Multiple SN74ALS35ADRG4 outputs can share one pull-up resistor to implement active-low logic summing without additional gates |
| TTL-Compatible Inputs | Meets standard TTL VIH/VIL thresholds, enabling seamless integration into legacy 5 V logic systems |
| Low Propagation Skew | tPHL/tPLH mismatch ≤ 12 ns ensures consistent timing across all six channels in synchronized enable applications |
| ALS Process Technology | Delivers 2× speed improvement over standard LS logic at comparable power, critical for high-throughput bus interfaces |
| Open-Collector Flexibility | Allows output VOH to be set externally (e.g., 3.3 V, 5 V, or 12 V) using appropriate pull-up, enabling mixed-voltage domain bridging |
Applications
| Bus Interface Logic | LED Driver Interface |
|---|---|
Use Scenario: Driving shared data/address buses in microcontroller-based industrial controllers where multiple peripherals assert signals onto common lines. IC Role / Device Role / Timing Role: SN74ALS35ADRG4 acts as an open-collector bus driver, enabling multiple devices to perform wired-AND arbitration on control strobes like /RD or /WR. Use Value: Eliminates need for discrete diodes or additional logic gates; leverages inherent open-collector structure for hardware-level bus contention resolution. |
Use Scenario: Driving indicator LEDs from microcontroller GPIO pins that lack sufficient sink current or require inverted logic polarity. IC Role / Device Role / Timing Role: SN74ALS35ADRG4 serves as a current-sinking buffer, translating active-high MCU outputs into active-low LED turn-on signals with 8 mA drive capability. Use Value: Provides guaranteed 8 mA sink per channel-enough to drive standard 20 mA LEDs at reduced brightness-without loading MCU I/O pins. |
| Level Translation | Legacy System Replacement |
Use Scenario: Interfacing a 3.3 V FPGA I/O bank to a 5 V peripheral bus requiring active-low handshake signals. IC Role / Device Role / Timing Role: SN74ALS35ADRG4 functions as a unidirectional level shifter: FPGA drives input at 3.3 V (within VIH/VIL spec), output pulls down to GND while pulled up to 5 V externally. Use Value: Achieves safe, passive level translation without direction control or power-domain isolation components. |
Use Scenario: Replacing obsolete SN74LS35 or SN74S35 in field-repaired telecom line cards still operating in commercial temperature range. IC Role / Device Role / Timing Role: SN74ALS35ADRG4 substitutes as a drop-in functional upgrade: identical pinout, same logic function, but faster (2 ns tPHL vs. 15 ns for LS) and lower power. Use Value: Extends service life of aging equipment with measurable performance gain-reduced bus setup time and lower ICCL current (4.1 mA vs. ~12 mA for LS). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex open-collector buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALS35AN | DIP-14 package (N), same electrical specs, wider 300-mil body, through-hole mounting | Suitable for prototyping, legacy board repair, or mixed-technology assemblies requiring TH packaging | Select when manual soldering, socketing, or compatibility with existing DIP footprints is required |
| SN74F35N | Fast TTL version: higher IOL (20 mA), faster tPLH (10 ns typ), but higher ICC (15 mA typ) and no ALS power efficiency | Better for high-speed, high-drive applications where power budget allows; not pin-compatible due to different VCC/GND pin locations | Choose only if drive strength >8 mA or sub-15 ns delay is mandatory; verify PCB layout compatibility |
Compared with SN74ALS35AN and SN74F35N, the SN74ALS35ADRG4 offers optimal balance of surface-mount compatibility, ALS power efficiency (ICCL = 4.1–6.3 mA), and SOIC-14 footprint density-making it preferred for new commercial-grade designs where automated assembly and thermal profile control matter.
Availability
SN74ALS35ADRG4 is available at Aetrix Electronics and suitable for bus interface logic, LED driver interface, and level translation applications requiring stable component supply, long-term industrial availability, and RoHS-compliant packaging.
Supply support for SN74ALS35ADRG4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74ALS35ADRG4 belongs to TI's legacy Advanced Low-Power Schottky (ALS) logic family, engineered for high-speed, low-power TTL-compatible interfacing in commercial-temperature industrial control and instrumentation systems.
FAQ
What is the maximum supply voltage for SN74ALS35ADRG4?
The absolute maximum supply voltage for SN74ALS35ADRG4 is 7 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operation outside this range may cause excessive current draw, thermal stress, or undefined logic behavior. The SN74ALS35ADRG4 is not rated for sustained use at 7 V; doing so risks permanent damage per the absolute maximum ratings table in the datasheet.
Does SN74ALS35ADRG4 have internal pull-up resistors on its outputs?
No, SN74ALS35ADRG4 does not include internal pull-up resistors. Its outputs are open-collector and require external pull-up resistors to define VOH and enable proper logic high states. Typical values range from 1 kΩ to 10 kΩ depending on load capacitance and rise-time requirements. This design allows flexible VOH selection-e.g., pulling up to 3.3 V, 5 V, or even 12 V-making SN74ALS35ADRG4 suitable for mixed-voltage interfacing.
Can SN74ALS35ADRG4 replace SN74LS35 in an existing design?
Yes, SN74ALS35ADRG4 is a direct functional and pin-compatible replacement for SN74LS35 in SOIC-14 footprint designs. It matches the same logic function, pinout, and DC specifications while offering faster propagation delays (2 ns tPHL vs. 15 ns for LS) and lower quiescent current (ICCL ≈ 5.2 mA vs. ~12 mA). No PCB changes are needed, but verify timing margins due to reduced delay skew in the SN74ALS35ADRG4.
What is the minimum input high voltage recognized by SN74ALS35ADRG4?
The minimum guaranteed high-level input voltage (VIH) for SN74ALS35ADRG4 is 2.0 V under recommended operating conditions (VCC = 4.5–5.5 V, TA = 0°C to 70°C). Inputs at or above 2.0 V are guaranteed to be interpreted as logic HIGH; signals between 0.8 V and 2.0 V fall within the undefined input transition region and must be avoided in robust designs using SN74ALS35ADRG4.
Is SN74ALS35ADRG4 RoHS compliant and lead-free?
Yes, SN74ALS35ADRG4 is RoHS compliant and features NiPdAu (NIPDAU) lead finish, as confirmed in TI's official packaging addendum. It meets JEDEC Level-1 moisture sensitivity rating with unlimited floor life at ≤30°C/60% RH, and is qualified for standard Pb-free reflow profiles up to 260°C peak. The "G4" suffix explicitly denotes green (RoHS-compliant) packaging for this SOIC-14 variant.
SN74ALS35ADRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALS
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Open Collector
- Current - Output High, Low:
- -, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SN74ALS35ADRG4 FAQ
1.How can I place an order for SN74ALS35ADRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALS35ADRG4 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 SN74ALS35ADRG4 reliable?
The price and inventory of SN74ALS35ADRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALS35ADRG4 is usually 5 days.
3.What payment methods are accepted for SN74ALS35ADRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALS35ADRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALS35ADRG4?
SN74ALS35ADRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALS35ADRG4 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 SN74ALS35ADRG4?
For technical support, including SN74ALS35ADRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALS35ADRG4 requirements.
6.How does Aetrix verify that SN74ALS35ADRG4 is sourced from the original manufacturer or authorized distributors?
All SN74ALS35ADRG4 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 SN74ALS35ADRG4 meets industry standards.
7.What is the process for return or replacement of SN74ALS35ADRG4?
All SN74ALS35ADRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALS35ADRG4, 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 SN74ALS35ADRG4 part is unused and in its original packaging.
Return procedure for SN74ALS35ADRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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