Analog Devices Inc. LTC2914CGN-1#PBF

Overview

LTC2914CGN-1#PBF from Analog Devices (formerly Linear Technology) is a quad-input undervoltage/overvoltage supervisor IC designed for simultaneous monitoring of four independent DC supply rails in power management systems. It features ±1.5% threshold accuracy over temperature, 62µA quiescent current, adjustable reset timeout via external capacitor, and support for both positive and negative voltage monitoring using polarity-selectable inputs. It is used in desktop/notebook computers and network servers to ensure reliable system power-up sequencing and fault detection.

For engineers reviewing the LTC2914CGN-1#PBF datasheet, LTC2914CGN-1#PBF pinout, LTC2914CGN-1#PBF application, or LTC2914CGN-1#PBF equivalent, key selection considerations include its latching OV output (LTC2914-1 variant), 16-lead SSOP package, 0°C to 70°C operating range, and dual-polarity input capability enabled by the three-state SEL pin.

Technical Context

The LTC2914CGN-1#PBF implements four independent comparator pairs (VHn/VLn) sharing common open-drain UV and OV outputs, with internal 0.5V reference and buffered 1V REF output. Its architecture supports configurable polarity per input pair via the SEL pin-enabling monitoring of up to two negative supplies without external components.

It integrates a shunt-regulated VCC input (6.6V typical), glitch-filtered comparators with 50–500µs propagation delay, and an adjustable timeout generator tied to the TMR pin (8.5ms typical with 1nF). The LTC2914-1 variant provides OV latch functionality via the LATCH pin, while UV remains non-latching with timeout recovery.

Key Specifications

Pinout & Package

Package: 16-lead plastic SSOP (GN), 5.3mm × 5.3mm body, 0.65mm pitch, exposed pad not present (DFN variant only).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad voltage monitoring applications.

Compared with TPS3307-18DGNR and MAX6816ESE+, the LTC2914CGN-1#PBF uniquely delivers true quad UV/OV supervision with selectable polarity, ±1.5% accuracy, and latched OV - making it the only option capable of full fault coverage across mixed-rail, high-reliability computing systems.

Availability

LTC2914CGN-1#PBF is available at Aetrix Electronics and suitable for desktop computers, network servers, and embedded control boards requiring stable component supply, long-term lifecycle support, and guaranteed C-grade commercial temperature performance.

Supply support for LTC2914CGN-1#PBF 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

Analog Devices acquired Linear Technology in 2017 and maintains its precision analog and power management product lines with full technical documentation and long-term support.

The LTC2914 family is designed for high-accuracy, multi-rail power supervision in computing and communications infrastructure - emphasizing micropower operation, configurability, and robust fault handling in space-constrained designs.

FAQ

What is the operating temperature range of the LTC2914CGN-1#PBF?

The LTC2914CGN-1#PBF is rated for 0°C to 70°C operation (C-grade), as confirmed by the "LTC2914CGN-1#PBF" part marking and associated ordering information table. This makes it suitable for commercial computing and server board applications where ambient temperatures remain within this envelope. The device's electrical characteristics-including ±1.5% threshold accuracy and 62µA quiescent current-are guaranteed across this full range.

How does the SEL pin affect input polarity on the LTC2914CGN-1#PBF?

The SEL pin on the LTC2914CGN-1#PBF is a three-state input that configures polarity for VH3/VL3 and VH4/VL4. When tied to GND, both pairs monitor negative supplies; when tied to VCC, both monitor positive supplies; when left open, VH3/VL3 monitor positive and VH4/VL4 monitor negative. This enables flexible mixed-rail supervision without external components - a key differentiator of the LTC2914CGN-1#PBF versus fixed-polarity alternatives.

Does the LTC2914CGN-1#PBF support latching of the overvoltage output?

Yes - the LTC2914CGN-1#PBF is the -1 variant, which includes latching OV functionality controlled by the LATCH pin. Pulling LATCH low causes OV to latch low upon detection; pulling it high clears the latch. This behavior is explicitly defined in the datasheet's "Description" and "Pin Functions" sections and distinguishes the LTC2914CGN-1#PBF from the -2 variant (disable-capable) and non-latching alternatives.

What package type is used for the LTC2914CGN-1#PBF?

The LTC2914CGN-1#PBF uses a 16-lead plastic SSOP (Shrink Small Outline Package), identified by the "GN" suffix and documented in the "Order Information" table. Its dimensions are 5.3mm × 5.3mm with 0.65mm lead pitch. Unlike the DFN variants (e.g., LTC2914CDHC-1#PBF), the GN package has no exposed thermal pad and is compatible with standard reflow and wave-solder processes.

Can the LTC2914CGN-1#PBF monitor negative supply voltages?

Yes - the LTC2914CGN-1#PBF can monitor up to two negative supplies using its VH/VL input pairs and the SEL pin. When configured for negative monitoring, VHn triggers OV when below 0.5V and VLn triggers UV when above 0.5V - leveraging the buffered 1V REF output as a stable offset. This capability is validated in the "Polarity Selection" section and Figure 2 of the datasheet, and is a core feature of the LTC2914CGN-1#PBF design.