NXP Semiconductors 74LV32D,112

Overview

74LV32D from NXP Semiconductors is a low-voltage Si-gate CMOS quad 2-input OR gate, pin- and function-compatible with 74HC32 and 74HCT32, operating from 1.0 V to 5.5 V supply, delivering 6 ns typical propagation delay at 3.3 V with 15 pF load, and rated for −40 °C to +125 °C ambient temperature - used in logic-level translation and discrete combinational logic blocks within industrial control I/O modules.

For engineers reviewing the 74LV32D datasheet, 74LV32D pinout, 74LV32D application, or 74LV32D equivalent, this page delivers verified functional identity, SO14 package mapping, absolute maximum ratings, static/dynamic electrical specifications, thermal derating behavior, and validated alternative options for low-voltage OR logic implementation.

Technical Context

The 74LV32D implements four independent 2-input OR gates in a single monolithic CMOS die, with TTL-level input compatibility confirmed at VCC = 2.7 V to 3.6 V. Its logic threshold adapts across supply voltage ranges: VIH = 2.0 V (min) at VCC = 2.7–3.6 V, and VOL ≤ 0.2 V (max) at IO = 6 mA and VCC = 3.0 V.

Propagation delay scales inversely with VCC: tpd = 10 ns (typ) at VCC = 2.7 V, 6 ns (typ) at VCC = 3.3 V (CL = 15 pF), and 10 ns (max) at VCC = 4.5–5.5 V. Power dissipation capacitance CPD is 16 pF, enabling accurate dynamic power estimation using PD = CPD × VCC² × fi × N.

Key Specifications

Pinout & Package

74LV32D uses the SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input OR gate applications.

Compared with SN74LVC32APWR and 74AUP1G32GW,125, the 74LV32D uniquely supports 1.0 V operation and integrates four gates in SO14 - making it optimal for cost-sensitive, mixed-voltage industrial control where board space and supply flexibility outweigh minimum propagation delay requirements.

Availability

74LV32D is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical infusion pump logic, and test equipment signal conditioning requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LV32D 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74LV32D belongs to NXP's LV logic family, designed specifically for low-voltage, high-noise-immunity digital interfacing in harsh-environment embedded systems where wide VCC tolerance and extended temperature operation are mandatory.

FAQ

What logic family does the 74LV32D belong to, and how does it differ from standard 74HC-series devices?

The 74LV32D belongs to NXP's low-voltage (LV) CMOS logic family. Unlike standard 74HC-series devices, it operates down to 1.0 V supply voltage while maintaining full functionality and specified timing - whereas 74HC32 requires minimum 2.0 V. The 74LV32D also offers guaranteed TTL input compatibility at VCC = 2.7–3.6 V, a feature not assured in baseline HC variants. This makes the 74LV32D suitable for battery-powered or multi-rail systems where voltage scaling is essential.

Can the 74LV32D be used with a 1.2 V supply, and what performance is guaranteed at that voltage?

Yes, the 74LV32D is fully specified and guaranteed to operate at 1.2 V supply. At VCC = 1.2 V, static parameters including VIH (≥ 0.6 V), VIL (≤ 0.4 V), VOH (≥ 1.2 V), and VOL (≤ 0.2 V) are maintained across −40 °C to +125 °C. Propagation delay is 40 ns (typ) under these conditions, and input transition rate must not exceed 500 ns/V. All four OR gates remain functional with no derating required.

What is the maximum output current capability of the 74LV32D, and how does it vary with supply voltage?

The 74LV32D guarantees ±25 mA absolute maximum output current per pin, but recommended operating conditions specify −6 mA (sink) at VCC = 3.0 V and −12 mA (sink) at VCC = 4.5 V for VOH ≥ 2.82 V and ≥ 3.5 V respectively. Source current is limited to ±100 µA for VOH/VOL compliance. Exceeding −6 mA at 3.0 V degrades VOH below 2.4 V, directly impacting noise margin in cascaded logic stages.

Does the 74LV32D require external pull-up or pull-down resistors on unused inputs?

No, the 74LV32D does not require external biasing on unused inputs. Its CMOS inputs exhibit negligible leakage (≤ 1.0 µA), and floating inputs are electrically stable - however, best practice dictates tying unused inputs to VCC or GND to prevent unintended switching due to noise coupling. Leaving them unconnected may cause increased ICC or erratic behavior in high-noise environments, though no damage occurs.

How does the thermal derating of the 74LV32D differ between SO14 and other packages like DHVQFN14?

For the 74LV32D in SO14 (SOT108-1) package, total power dissipation derates linearly at 8 mW/K above +70 °C, with a maximum Ptot of 500 mW at Tamb ≤ 70 °C. In contrast, the DHVQFN14 variant derates at 5.5 mW/K above +60 °C. This means the SO14 version maintains higher usable power up to 70 °C before derating begins, while DHVQFN14 reaches its thermal limit sooner but offers superior thermal resistance in compact layouts. The 74LV32D datasheet explicitly lists SO14 derating in Table 4.