UTC339 Quad Differential Comparator IC
The UTC339 is a compact quad differential comparator designed to run from a single supply over a wide voltage range, making it suitable for many low-power and mixed-signal systems. Each of the four independent comparator channels accepts inputs that include ground in the common-mode range, so the device integrates easily into single-supply designs without additional level shifting. Its open-collector outputs allow wired-AND connections and easy interfacing to TTL, DTL and CMOS logic levels, giving designers flexibility for digital signalling and interrupt-style outputs.
The chip emphasizes low supply current (typical ICC ~0.8–1.1 mA) and low input bias current, which helps preserve battery life in portable applications. It offers low input offset and modest gain suitable for threshold detection, zero-crossing, and simple waveform conditioning tasks. Output stages are designed for reliable sinking with low saturation voltage to drive logic inputs directly or through pull-up resistors to the chosen logic rail.
Physically available in DIP-14, SOP-14 and TSSOP-14 packages, the UTC339 is straightforward to prototype with (DIP) and compact for production (SOP/TSSOP). Typical use cases include threshold comparators, window detectors, pulse shaping, and supervisory circuits where inexpensive, low-power, and TTL/CMOS-compatible comparators are required. The device’s broad supply range (2–36V) and open-collector outputs make it a flexible building block in analog and mixed-signal boards.
Features:
- Single or dual supply operation.
- Wide operating supply range (Vcc = 2V ~ 36V).
- Input common-mode voltage includes ground.
- Low supply current drain ICC = 0.8 mA (typical).
- Open-collector outputs for wired-AND connection.
- Low input bias current Ibias = 25 nA (typical).
- Low output saturation voltage.
- Output compatible with TTL, DTL, and CMOS logic systems.
Specifications:
| Parameter: | Value: |
|---|---|
| Supply voltage range: | 2 V to 36 V (single supply). |
| Absolute max supply voltage: | ±18 V or 36 V. |
| Differential input voltage: | 36 V. |
| Input voltage range: | -0.3 V to 36 V. |
| Power dissipation: | 570 mW. |
| Operating temperature: | 0 °C to +70 °C. |
| Storage temperature: | -65 °C to +150 °C. |
| Typical supply current (Icc): | ~0.8–1.1 mA (depending on test conditions). |
| Input offset voltage (VIO): | Typ ±1.5 mV; Max ±5.0 mV (Vcc=5V, VCM=0→Vcc-1.5). |
| Input bias/offset currents: | Iio typ ±2.3 nA; Ibias typ ~57 nA. |
| Input common-mode range: | 0 to Vcc − 1.5 V. |
| Large-signal voltage gain: | 50–200 V/mV (Vcc=15V, RL>15kΩ). |
| Large-signal response time: | Typ 350 ns (fast test); other conditions up to ~1400 ns. |
| Output sink current (Isink): | Typical 6 mA; can reach 18 mA under conditions. |
| Output saturation voltage (Vsat): | Typ 140 mV; Max ~400 mV (Isink=4 mA). |
| Output type: | Open-collector, TTL/CMOS compatible. |
| Package options: | DIP-14, SOP-14, TSSOP-14. |
Applications:
- Threshold detection (single-sided).
- Window comparator circuits.
- Zero-cross detection.
- Power/supply monitoring and supervision.
- Pulse shaping and waveform conditioning.
- Level translation and logic interfacing.
Package Contents:
- 1x UTC339 Quad Differential Comparator IC
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