Texas Instruments SN74LV6T07BQAR

Overview

SN74LV6T07BQAR from Texas Instruments is a hex open-drain buffer IC enabling bidirectional voltage translation across 1.65 V to 5.5 V supply rails, with 5.5-V tolerant inputs and six independent Y = A logic channels. It supports up-translation (e.g., 1.2 V input → 1.8 V output) and down-translation (e.g., 5 V input → 0.8 V output), operates up to 6.67 Mbps with 1 kΩ pull-up and 30 pF load, and is qualified for automotive-grade applications per AEC-Q100.

For engineers reviewing the SN74LV6T07BQAR datasheet, SN74LV6T07BQAR pinout, SN74LV6T07BQAR application, or SN74LV6T07BQAR equivalent, key selection considerations include open-drain drive strength at varying VCC (e.g., VOL ≤ 0.25 V @ IOL = 3 mA, VCC = 2.5 V), LVxT input threshold compatibility with sub-1.8 V CMOS sources, thermal performance in WQFN (RθJA = 88.3°C/W), and functional validation of wired-AND bus interfacing.

Technical Context

The SN74LV6T07BQAR implements six identical positive-logic buffers (Y = A) with LVxT-enhanced inputs-featuring reduced VIH/VIL thresholds for reliable up-translation and 5.5-V absolute input tolerance for robust down-translation. Its open-drain outputs require external pull-ups and support wired-AND configurations without level-shifting circuitry.

Each channel operates independently across 1.65–5.5 V VCC, with propagation delays ranging from 4.3 ns (5 V, CL = 15 pF) to 26.6 ns (1.8 V, CL = 50 pF). Input transition rate must exceed 20 ns/V to prevent oscillation, and unused inputs must be terminated to VCC or GND-not left floating-to ensure deterministic logic states.

Key Specifications

Pinout & Package

SN74LV6T07BQAR is packaged in a 14-pin WQFN (BQA) with 3 mm × 2.5 mm body size and exposed thermal pad. The thermal pad may be connected to GND or left floating-never tied to signal or supply nets.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain buffer with voltage translation applications.

Compared with SN74LV6T07BQAR, SN74LVC6T245RGE lacks 5.5-V input tolerance and automotive qualification but offers direction-controlled bidirectionality, while TXS0106EJR provides integrated pull-ups and auto-direction but sacrifices speed and AEC-Q100 compliance-making SN74LV6T07BQAR optimal for deterministic, high-reliability unidirectional translation in harsh environments.

Availability

SN74LV6T07BQAR is available at Aetrix Electronics and suitable for industrial automation, automotive lighting control, and multi-voltage sensor interface applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for SN74LV6T07BQAR 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 delivering analog and embedded processing solutions, with deep expertise in logic, power management, and automotive electronics.

The SN74LV6T07BQAR belongs to TI's LVxT family of voltage-translating logic devices, engineered specifically for seamless interoperability between mixed-voltage digital subsystems in automotive, industrial, and communications equipment.

FAQ

What is the maximum capacitive load SN74LV6T07BQAR can drive while meeting datasheet specifications?

The SN74LV6T07BQAR is specified to drive loads ≤50 pF while maintaining guaranteed propagation delay, VOL, and noise margins across –40°C to +125°C. At CL = 50 pF and VCC = 3.3 V, tPLZ/tPZL is 14.8 ns max. Exceeding 50 pF increases delay and may degrade noise immunity; layout optimization (short traces, ground plane) is recommended for larger loads. SN74LV6T07BQAR remains functional beyond this limit but without full parameter guarantees.

Can SN74LV6T07BQAR be used to translate 5-V signals to a 1.8-V microcontroller input?

Yes-SN74LV6T07BQAR supports down-translation from 5 V to sub-1.8 V logic levels. With VCC = 1.8 V, its 5.5-V tolerant inputs accept 5-V signals directly, and the output (open-drain) pulled to 1.8 V via external resistor delivers valid 1.8-V logic LOW/HI-Z states. VIH(min) = 1.1 V and VIL(max) = 0.5 V at 1.8 V ensure reliable detection. SN74LV6T07BQAR eliminates need for external resistive dividers in this configuration.

Is the thermal pad on SN74LV6T07BQAR required to be soldered to ground?

No-the thermal pad on SN74LV6T07BQAR may be connected to GND or left electrically floating, per TI's datasheet guidance. Connecting it to GND improves thermal resistance (RθJB drops to 56.8°C/W) and adds EMI shielding, but floating is acceptable for space-constrained layouts. It must never be connected to VCC or signal nets. Proper solder paste stencil design and reflow profile are critical to ensure void-free pad attachment when grounded.

Does SN74LV6T07BQAR support wired-AND connections across multiple outputs?

Yes-SN74LV6T07BQAR's open-drain outputs are explicitly designed for wired-AND bus implementation. Multiple Y outputs (e.g., 1Y, 2Y, 3Y) can be tied together with a single pull-up resistor to form shared interrupt or acknowledge lines. No additional isolation components are needed. This configuration maintains logic integrity because only one output needs to drive LOW to assert the bus; all others remain in high-impedance state. SN74LV6T07BQAR's latch-up immunity (>250 mA) protects against bus contention faults.

What is the recommended pull-up resistor value for SN74LV6T07BQAR driving an LED at 5-V supply?

For driving an LED with VPU = 5 V, VF = 2.1 V, and ID = 10 mA, calculate R1 = (VPU − VF)/ID − ROL. Using SN74LV6T07BQAR's typical ROL ≈ 30 Ω (from VOL = 0.3 V @ IOL = 10 mA, VCC = 5 V), R1 ≈ (5 − 2.1)/0.01 − 30 = 260 Ω. A standard 270 Ω resistor is recommended. Ensure total sink current across all active channels stays within ±50 mA GND rating. SN74LV6T07BQAR's VOL spec guarantees predictable LED brightness across temperature.