Texas Instruments SN74LVC3G98PWRQ1

Overview

SN74LVC3G98PWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive configurable logic gate IC with Schmitt-trigger inputs, operating from 1.1V to 3.6V supply, supporting 5.5V-tolerant inputs and delivering up to 24mA output drive at 3V. It implements three independent 3-input configurable logic channels (MUX, AND, OR, NAND, NOR, inverter, non-inverter) for power sequencing and digital enable functions in engine control units and ADAS sensor interfaces.

For engineers reviewing the SN74LVC3G98PWRQ1 datasheet, SN74LVC3G98PWRQ1 pinout, SN74LVC3G98PWRQ1 application, or SN74LVC3G98PWRQ1 equivalent, key selection criteria include its 14-pin TSSOP (PW) package, −40°C to +125°C operation, Schmitt-trigger noise immunity (ΔVT ≥ 0.18V at 1.5V), propagation delay ≤ 5.6ns at 3.3V/50pF, and automotive qualification per AEC-Q100-002 (HBM ±2000V) and AEC-Q100-011 (CDM ±1000V).

Technical Context

The SN74LVC3G98PWRQ1 integrates three identical configurable logic blocks, each accepting three inputs (A, B, C) and producing one output (Y), with function selection determined by the 3-bit input pattern per channel. Its Schmitt-trigger inputs provide hysteresis (ΔVT = 0.18–1.2V depending on VCC), enabling robust operation with slow-rising or noisy signals without external filtering.

Each channel features balanced CMOS push-pull outputs capable of sourcing/sinking ±24mA at 3V, with VOH ≥ 2.2V and VOL ≤ 0.55V under full load. The device supports mixed-voltage interfacing via 5.5V-tolerant inputs while powered from as low as 1.1V, and includes latch-up immunity exceeding 250mA per JESD17.

Key Specifications

Pinout & Package

SN74LVC3G98PWRQ1 is packaged in a 14-pin TSSOP (PW) with 5mm × 6.4mm body size and wettable flank capability not applicable to this variant (BQA package only). Pin numbering follows standard JEDEC TSSOP top-view orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar configurable logic gate applications.

Compared with SN74LVC3G98PWRQ1, SN74LVC1G98DRYR offers smaller footprint but sacrifices channel count and automotive qualification, while SN74LVC3G97PWR matches pinout and functionality but omits AEC-Q100 validation-making SN74LVC3G98PWRQ1 the only option meeting full automotive reliability requirements for multi-channel logic consolidation.

Availability

SN74LVC3G98PWRQ1 is available at Aetrix Electronics and suitable for automotive powertrain control, ADAS sensor fusion, and body electronics applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for SN74LVC3G98PWRQ1 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 automotive ICs, with over 50 years of innovation in high-reliability electronic components.

The SN74LVC3G98PWRQ1 belongs to TI's LVC logic family designed specifically for automotive signal conditioning and power management interfaces, emphasizing noise immunity, wide supply range, and AEC-Q100 compliance for under-hood and safety-critical systems.

FAQ

What logic functions does the SN74LVC3G98PWRQ1 support per channel?

The SN74LVC3G98PWRQ1 supports seven configurable logic functions per channel: MUX (2:1 data selector), AND, OR, NAND, NOR, inverter, and non-inverter. Each function is selected by the 3-bit input combination (A, B, C) applied to that channel, as defined in Table 7-1 of the datasheet. All three channels operate independently, allowing mixed-function implementation on a single SN74LVC3G98PWRQ1 die.

Is the SN74LVC3G98PWRQ1 pin-compatible with non-automotive variants like SN74LVC3G98PWR?

Yes, the SN74LVC3G98PWRQ1 shares identical pinout, package dimensions (14-pin TSSOP PW), and electrical behavior with SN74LVC3G98PWR. The "Q1" suffix denotes AEC-Q100 qualification and extended temperature screening-but mechanical and functional compatibility is maintained. No PCB layout changes are required when upgrading from SN74LVC3G98PWR to SN74LVC3G98PWRQ1 in automotive designs.

How does the Schmitt-trigger input improve noise immunity in automotive applications?

The SN74LVC3G98PWRQ1 Schmitt-trigger inputs provide hysteresis (ΔVT ≥ 0.18V at 1.5V, up to 1.2V at 3.6V), meaning the threshold for detecting a rising edge (VT+) differs from that for a falling edge (VT−). This prevents multiple toggles caused by slow or noisy signals-critical for interpreting battery-sensed voltages or LIN bus status lines in electrically noisy engine compartments. Unlike standard CMOS inputs, it tolerates input rise/fall times up to 10 ns/V without added filtering.

Can SN74LVC3G98PWRQ1 drive a 50pF capacitive load while meeting timing specs?

Yes, the SN74LVC3G98PWRQ1 guarantees propagation delay ≤ 5.6ns (tpd) at 3.3V with CL = 50pF, as specified in Section 5.6 of the datasheet. It is characterized for loads up to 50pF under recommended operating conditions. Driving larger capacitances increases delay and may degrade edge integrity; for >50pF loads, TI recommends adding a series resistor to limit output current and maintain signal integrity without violating absolute maximum ratings.

What is the maximum output current the SN74LVC3G98PWRQ1 can source or sink per channel?

The SN74LVC3G98PWRQ1 can source up to 24mA (IOH) and sink up to 24mA (IOL) per output channel at VCC = 3V, with VOH ≥ 2.2V and VOL ≤ 0.55V under those conditions. Absolute maximum continuous output current is ±50mA per pin, but sustained operation above 24mA risks thermal derating. Total device current through VCC or GND must not exceed ±100mA, as stated in Section 5.1 Absolute Maximum Ratings.