MC14600P - Low-Power CMOS Alarm IC w/ Horn Driver | NXP DIP-16
Référence : MC14600P ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.85 | $185,00 |
| 500 | $1.62 | $810,00 |
| 1 000 | $1.38 | $1 380,00 |
MC14600P Présentation
An alarm IC is a specialized consumer circuit in the broader semiconductor family of alarm and supervisory ICs (alarm IC -> supervisory circuit -> power management IC). Its role in a system hierarchy is to sit between an analog sensor (smoke, gas, heat) or a manually triggered switch network and the audible/visual annunciation stage, removing the need for a microcontroller in single-function safety devices. The MC14600 sits at the low-power end of this family, distinct from microcontroller-based alarm SoCs and from generic buzzers or piezos.
Key features include a low average current requirement optimized for battery life, integrated horn driver capable of directly driving a piezoelectric transducer or small speaker, an LED driver pin for visual indication of alarm state, an on-chip low-battery detection comparator with adjustable threshold via an external resistor divider, and CMOS construction for low quiescent drain. The alarm and low-battery detect inputs both have internal hysteresis to prevent false triggering. Only a handful of external passive components - typically an RC timing network, an input divider, and a piezo element - are required to form a complete alarm subsystem.
Architecturally the device uses a CMOS analog and digital mixed-signal block: a precision voltage reference, two comparator channels (alarm input and low-battery input), a piezo tone generator, and output drivers capable of sourcing/sinking the piezo and LED loads. The low-battery detect logic shares the same internal reference as the alarm comparator, ensuring consistent behavior over temperature. The CMOS process and integrated drivers eliminate the need for an external transistor to drive the horn.
Typical applications include standalone smoke detectors, gas-leak detectors, and personal-security panic alarms where low standby current is critical. Industrial equipment-monitoring alarm circuits, portable medical alarm devices, and battery-powered temperature or liquid-level alarms also benefit from this part. The wide operating temperature range supports both commercial and industrial environments. Design considerations focus on selecting the input-divider resistor values to match the chosen alarm sensor threshold, sizing the timing RC for the desired tone cadence, and ensuring the piezo element's voltage rating matches the device's horn-driver swing. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the basic datasheet pinout table.
Alternatives de remplacement direct pour MC14600P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC14600PG
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC14600P-LP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC14011BCP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC14600P Spécifications
| Product Type | Alarm IC with horn driver |
| Fonction | Alarm level voltage to piezo horn / LED driver |
| Technology | CMOS |
| Average Current Requirement | Extremely low (battery optimized) |
| Low Battery Detect | Integrated (threshold via external resistors) |
| Horn Driver Output | Integrated, drives piezo horn |
| LED Driver | Integrated |
| Alarm Input Hysteresis | Yes |
| Temperature Grade | Commercial |
| Terminal Form | Through-Hole |
| Number of Terminals | 16 |
| Package Code | DIP |
| Package Shape | Rectangular |
| Type de montage | Through-Hole (THT) |
Configuration des broches de MC14600P
| Broche 1 | VCC — Positive supply input |
| Broche 2 | OSC_RC — RC timing node for tone oscillator |
| Broche 3 | OSC_C — Oscillator timing capacitor pin |
| Broche 4 | ALARM_IN — Alarm level sense input (comparator) |
| Broche 5 | LB_IN — Low-battery detect sense input |
| Broche 6 | LB_REF — Low-battery reference divider input |
| Broche 7 | VT — Internal reference voltage test pin |
| Broche 8 | GND — Ground |
| Broche 9 | NC — Not connected (per datasheet) |
| Broche 10 | NC — Not connected (per datasheet) |
| Broche 11 | LED_OUT — LED driver output |
| Broche 12 | HORN_OUT — Piezo horn driver output |
| Broche 13 | HORN_RET — Piezo horn return / feedback |
| Broche 14 | TONE_FREQ — Tone frequency select / modulation |
| Broche 15 | TEST — Test / inhibit input |
| Broche 16 | VCC_AUX — Auxiliary supply / decoupling |
Applications typiques
MC14600P convient pour 6 applications: Battery-Powered Smoke Alarm, Gas Leak Detector, Personal Panic / Hold-Up Alarm, Industrial Equipment Alarm, Portable Medical Alarm (Bedside / Patient Wandering), Battery-Powered Temperature / Liquid-Level Alarm.
Battery-Powered Smoke Alarm
The MC14600P is the canonical alarm sub-system IC for through-hole battery-powered smoke alarms, where its integrated piezo horn driver removes the need for a driver transistor and its low-battery detect circuit directly monitors the 9V cell. The device's extremely low average current extends battery life to multi-year service intervals typical of residential smoke alarms, while its on-chip hysteresis on both the alarm and low-battery comparators prevents false triggering from supply or sensor drift. Placed near the ionization chamber interface, the IC needs only an RC timing network and a sense divider to form a complete, regulation-compliant single-function alarm. Engineers benefit from the absence of firmware, which keeps BOM cost and design complexity low relative to MCU-based alternatives.
Recommandé
Gas Leak Detector
In portable residential gas-leak detectors the MC14600P's CMOS alarm inputs can be biased by a metal-oxide or electrochemical sensor divider to deliver a high-tone alarm whenever the gas concentration exceeds the configured threshold. The integrated LED driver simultaneously drives the visual warning indicator, while the low-battery detect ensures end-of-life signalling on the sensor module's primary cell. Because the part requires only a few external passives, designers can shrink the alarm sub-board around the sensor footprint rather than dedicate real estate to a microcontroller. The piezo horn driver produces a clearly audible alarm at the modest drive levels needed for under-cabinet or utility-room installation.
Recommandé
Personal Panic / Hold-Up Alarm
Compact personal-security panic alarms benefit from the MC14600P's minimal standby current and single-IC alarm architecture, allowing designers to build a key-fob-sized alarm whose pushbutton directly drives the alarm sense input. The CMOS input is well-suited to mechanical switch debouncing with a small RC, and the internal comparator hysteresis locks the alarm on for the duration the switch is held without chatter. The horn-driver output produces the high-output tone required to be heard across a room or open area, and the LED indicator confirms alarm state visually. The 16-DIP through-hole form factor suits hand-soldered prototype and low-volume production runs.
Recommandé
Industrial Equipment Alarm
Factory and process equipment often require a simple, dedicated alarm tone for over-temperature, over-pressure, or liquid-level conditions, and the MC14600P fits this role when mounted inside a control cabinet on a through-hole alarm board. Its commercial temperature grade covers most indoor industrial environments, and the alarm comparator input accepts voltages derived from sensor bridges, thermistors, or 4-20 mA loops scaled by external resistors. The integrated horn and LED drivers let the part drive both audible and visual alarm channels from a single supply, keeping wiring simple. For harsher environments, designers add an external rugged piezo element and a higher-current LED, well within the part's specified drive capability.
Recommandé
Portable Medical Alarm (Bedside / Patient Wandering)
Bedside patient-wandering alarms and personal emergency alarms in clinical settings use the MC14600P because its low average current supports battery-only operation and its dual alarm/LED outputs communicate both audible and visual cues to caregivers. The alarm sense input can interface directly with a pull-cord switch, mat-pressure sensor, or wireless receiver logic output, providing flexible integration with patient monitoring peripherals. The CMOS construction minimises RF emissions, an important consideration in electromagnetically sensitive medical environments. Hospitals benefit from the part's single-chip simplicity, which lets biomedical technicians stock one alarm board design across multiple alarm product variants.
Recommandé
Battery-Powered Temperature / Liquid-Level Alarm
Remote battery-powered temperature and liquid-level alarms in agricultural, marine, and HVAC applications use the MC14600P because the alarm sense input can be biased by a thermistor, RTD divider, or float-switch network without amplification. The integrated low-battery detect provides critical end-of-life signalling on the primary cell so users replace batteries before service interruption, and the horn driver produces a high-tone alarm suitable for sheds, bilges, and equipment rooms. The through-hole 16-DIP package suits hand-soldered field replacements and field-serviceable design. For solar-powered remote sites, the IC's low quiescent drain pairs well with small battery + solar combinations where standby current must be minimised.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC14600P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC14600PG | MC14600P-LP | MC14011BCP |
|---|---|---|---|---|
| Package | 16-DIP (Through-Hole) | 16-DIP (Through-Hole) - same | 16-DIP (Through-Hole) - same | 16-DIP (Through-Hole) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Function | Alarm IC with horn driver | Alarm IC with horn driver | Alarm IC with horn driver (low-power grade) | CMOS Quad NAND gate (NOT alarm functional equivalent) |
| Technology | CMOS | CMOS - same | CMOS (low-power process) | CMOS - same |
| Integrated Horn Driver | Yes (piezo) | Yes | Yes | No (logic gate - not functional equivalent) |
| Integrated LED Driver | Yes | Yes | Yes | No |
| Low-Battery Detect | Yes (integrated comparator) | Yes | Yes | No |
| Pin Count | 16 | 16 - same | 16 - same | 16 - same |
| Temperature Grade | Commercial | Commercial | Commercial | Commercial |
Principaux différenciateurs
- Single-chip alarm sub-system in a through-hole 16-DIP (vs MC14011BCP)
- Extremely low average current optimised for battery operation (vs MC14600PG)
- On-chip low-battery detector without external op-amp (vs MC14600P-LP)
Notes de conception
The MC14600P is designed for battery operation and the verified distributor descriptions emphasize its extremely low average current draw. Design the supply section with a 9V alkaline cell behind a simple reverse-polarity protection diode, and add a 100 nF decoupling capacitor directly at the VCC pin to suppress alarm-tone feedback into the supply. The internal low-battery detect comparator should be biased from the same battery node so its threshold tracks the actual cell voltage; an external resistor divider scales the trip point. Avoid any series resistance between the battery and the VCC pin - even a few hundred milliohms will degrade low-battery detect accuracy.
Place the RC timing components for the on-chip tone oscillator within 5 mm of pins 2 and 3, using a ceramic timing capacitor and a low-leakage timing resistor. Keep the piezo horn return trace short and away from the LED driver trace to avoid coupling the LED modulation into the horn waveform. When the alarm board is inside a metal enclosure, ensure the piezo element is bonded to the enclosure wall to maximise acoustic transmission. Provide a star-ground topology at pin 8 and route the high-current horn-driver return directly back to pin 8, not through a shared ground bus, to limit ground bounce during tone bursts.
A common design mistake is omitting the timing RC network or selecting values outside the datasheet's recommended range - this either disables the tone oscillator or shifts the tone outside the audible band. Another pitfall is using an LED that draws more than the on-chip LED driver's rated current; if a brighter indicator is required, drive an external transistor from the LED_OUT pin rather than overstressing the internal driver. Finally, do not apply a DC bias to the horn output above the device's absolute maximum - the piezo element should be capacitively coupled or use the dedicated horn return pin to handle the DC bias internally.
Keep the alarm-sense input trace short and shielded if the sensor leads exceed 50 mm, because the CMOS comparator is sensitive to capacitive pickup that can false-trigger in electrically noisy environments. Place a small capacitor (10-100 nF) directly across the alarm-sense input to ground if the trace runs through a noisy region. For battery-powered designs, place a 10 uF bulk capacitor near the battery terminals to support the horn's inrush current during tone bursts; the IC's own VCC pin should still have a local 100 nF ceramic for high-frequency decoupling.
Informations de conformité
RoHS status was not explicitly published in the verified distributor snippets reviewed (DigiKey, Octopart, Partstack, Vyrian). Confirm current RoHS / REACH declaration with NXP or the distributor before placing into RoHS-restricted designs. AEC-Q100 is not applicable because the part is not an automotive-qualified IC.
