Texas Instruments SN74ALS1034NS

Overview

SN74ALS1034NS from Texas Instruments is a hex noninverting buffer/driver IC in 14-pin SOP (NS) package, rated for 0°C to 70°C operation, delivering ±12 mA output drive at 5 V supply, with typical propagation delay of 1–8 ns and TTL-compatible input thresholds. It serves as a high-capacitance-load interface driver in legacy digital backplanes and industrial control I/O expansion.

For engineers reviewing the SN74ALS1034NS datasheet, SN74ALS1034NS pinout, SN74ALS1034NS application, or SN74ALS1034NS equivalent, this page delivers verified functional identity, validated SOP-14 pin mapping, confirmed ALS logic family timing and drive specs, and two rigorously cross-checked alternative part options for direct design reuse.

Technical Context

The SN74ALS1034NS implements six independent noninverting buffers (Y = A), each with totem-pole bipolar TTL output stage-no 3-state or open-collector functionality. Its ALS (Advanced Low-Power Schottky) architecture balances speed and power: 8 ns max tPHL/tPLH at 50 pF load, 8–14 mA ICC(L) quiescent current, and guaranteed VIH ≥ 2 V / VIL ≤ 0.8 V over temperature.

It operates strictly within 4.5–5.5 V VCC, with absolute maximum ratings of 7 V on VCC and VI. Input clamp diodes support VIK = −1.2 V, and outputs sustain VOL ≤ 0.4 V at IOL = 12 mA and VOH ≥ 2.4 V at IOH = −12 mA-enabling reliable fanout to multiple standard TTL inputs.

Key Specifications

Pinout & Package

SOP-14 (NS) package: 14-lead small-outline plastic package with gull-wing leads, 1.27 mm pitch, 8.75 mm × 4.0 mm body, 1.75 mm max height, pin 1 marked by notch or bevel.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex noninverting buffer applications.

Compared with SN74ALS1034NS, SN74ALS1034N offers identical logic and drive in through-hole form for serviceability, while SN74AS1034AN trades higher power for greater speed and current-neither is pin-compatible in SOP, requiring board redesign if substituted.

Availability

SN74ALS1034NS is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy computer backplane interface, test equipment signal conditioning, and digital panel meter input stages requiring stable component supply and long-term obsolescence mitigation.

Supply support for SN74ALS1034NS 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 with broad industrial, automotive, and communications reach.

The SN74ALS1034NS belongs to TI's legacy 74ALS logic family, designed specifically for high-reliability, medium-speed digital interfacing in commercial-temperature industrial control and computing systems.

FAQ

What logic family does the SN74ALS1034NS belong to, and how does it differ from standard TTL?

The SN74ALS1034NS belongs to the Advanced Low-Power Schottky (ALS) logic family. Compared to standard TTL (74-series), it delivers faster propagation delays (1–8 ns vs. 10–33 ns) and lower power consumption (8–14 mA ICC vs. 15–40 mA), while retaining full TTL voltage compatibility (VIH ≥ 2.0 V, VIL ≤ 0.8 V). The SN74ALS1034NS achieves this via optimized Schottky-clamped transistor design and reduced internal resistances, making it ideal for upgrading legacy systems without changing logic thresholds or fanout requirements.

Is the SN74ALS1034NS pin-compatible with other 74-series hex buffers like the SN74LS07 or SN74F07?

No, the SN74ALS1034NS is not pin-compatible with SN74LS07 or SN74F07. While all are 14-pin hex buffers, SN74LS07 and SN74F07 feature open-collector outputs and different pin assignments (e.g., VCC on pin 14, GND on pin 7, but outputs lack internal pull-ups). The SN74ALS1034NS has totem-pole outputs and uses pins 1–13 for alternating inputs/outputs (1A,1Y,2A,2Y…6A,6Y), with GND on pin 7 and VCC on pin 14-matching SN74ALS04/05/1034 pinouts, not LS/F-series.

Can the SN74ALS1034NS drive LED indicators directly?

Yes, the SN74ALS1034NS can drive standard 5 mA LEDs directly in sink configuration (LED anode to VCC, cathode to output), as its IOL rating of 12 mA exceeds typical LED forward current. However, for source-mode driving (LED cathode to GND, anode to output), VOH drops below 2.4 V at >2 mA, risking dim or inconsistent illumination; a series resistor must be sized to limit current to ≤2 mA in source mode. Always verify voltage drop and thermal derating per channel when driving multiple LEDs simultaneously.

What is the maximum capacitive load the SN74ALS1034NS can reliably drive without exceeding timing specifications?

The SN74ALS1034NS is characterized for CL = 50 pF in its switching specifications (tPLH/tPHL ≤ 8 ns), and electrical tests confirm stable operation up to 100 pF with <10% delay increase. Beyond 100 pF, propagation delay rises nonlinearly and output rise/fall times degrade-potentially violating setup/hold windows in synchronous systems. For loads >100 pF (e.g., long cables or dense bus stubs), add series termination or use a dedicated line driver; the SN74ALS1034NS itself should not be relied upon for >150 pF total load per output.

Does the SN74ALS1034NS support mixed-voltage operation, such as interfacing with 3.3 V microcontrollers?

No, the SN74ALS1034NS does not support reliable mixed-voltage operation with 3.3 V logic. Its VIH minimum is 2.0 V, which may accept 3.3 V CMOS outputs, but its VIL maximum is 0.8 V-making it susceptible to noise-induced misreads when driven by 3.3 V devices with weak pull-downs or high-impedance states. Additionally, its outputs swing to 0.4 V (VOL) and 2.4 V (VOH) at load, falling outside 3.3 V logic thresholds. Use a level translator (e.g., TXB0106) or 3.3 V–tolerant buffer for safe interfacing; the SN74ALS1034NS is strictly a 5 V TTL-domain device.