MAX333A is a precision, quad, single-pole double-throw (SPDT) analog switch from Maxim that offers low on resistance, low power consumption, high voltage range, and high isolation, making it suitable for a wide range of applications including test equipment, communications systems, PBX, PABX, heads-up displays, and portable instruments.
The MAX333A is a precision, quad, single‑pole double‑throw analog switch that operates from bipolar supplies of ±4.5 V to ±20 V or from a single‑ended supply of +10 V to +30 V. It offers low on resistance, guaranteed matched resistance between channels, low charge injection, and robust ESD protection, making it suitable for portable instruments and test equipment.
Key features include on‑resistance typically below 35 Ω (as low as 20 Ω), turn‑off time under 145 ns, turn‑on time under 175 ns, break‑before‑make switching of about 10 ns, off‑channel leakage under 6 nA at +85 °C, and an ESD rating exceeding 2000 V. The device is available in several packages such as DIP, SO, and TSSOP, and operates over a temperature range of 0 °C to +70 °C (plastic DIP).
| On Resistance (RON) | < 35 Ω (typical 20 Ω) |
|---|---|
| On‑Resistance Match | < 2 Ω between channels |
| Turn‑off Time | < 145 ns |
| Turn‑on Time | < 175 ns |
| Break‑before‑Make Time | 10 ns typical |
| Charge Injection | < 10 pC |
| ESD Protection | > 2000 V |
| Off‑Channel Leakage | < 6 nA at +85 °C |
The typical on resistance is less than 35 Ω, with values as low as about 20 Ω in typical operation.
The device is rated for electrostatic discharge protection greater than 2000 V.
The maximum continuous current is 30 mA for any terminal except VCOM, VNO, or VNC.