Overview
The CM1213-06MR is a 6-channel low capacitance ESD (Electrostatic Discharge) protection array produced by onsemi. This device is designed to provide robust ESD protection for electronic components or subsystems that require minimal capacitive loading. It is particularly suited for high-speed ports such as USB 2.0, IEEE 1394 (Firewire), Serial ATA, DVI, and HDMI, among others. The CM1213-06MR features an integrated Zener diode that protects the supply rail against ESD strikes and eliminates the need for external bypass capacitors.
Key Specifications
| Parameter | Rating | Units |
|---|---|---|
| Operating Supply Voltage (VP - VN) | 6.0 | V |
| Operating Temperature Range | -40 to +85 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| DC Voltage at any channel input | (VN - 0.5) to (VP + 0.5) | V |
| Package Power Rating (MSOP-8) | 400 | mW |
| Operating Supply Current (VP - VN = 3.3 V) | 8.0 | μA |
| Diode Forward Voltage (Top/Bottom Diode) | 0.60 / 0.60 | V |
| Channel Input Capacitance (at 1 MHz) | 1.0 | pF |
| Channel Input Capacitance Matching (at 1 MHz) | 0.02 | pF |
| Mutual Capacitance between signal pin and adjacent signal pin (at 1 MHz) | 0.11 | pF |
| ESD Protection (Peak Discharge Voltage at any channel input) | ±8 kV | kV |
| Channel Clamp Voltage (Positive/Negative Transients) | +8.8 / -1.4 | V |
Key Features
- 6 or 8 channels of ESD protection (CM1213-06MR is 6-channel)
- Provides ESD protection to IEC 61000-4-2 Level 4
- ±8 kV contact discharge protection
- Low channel input capacitance of 1.0 pF typical
- Minimal capacitance change with temperature and voltage
- Channel input capacitance matching of 0.02 pF typical, ideal for differential signals
- Mutual capacitance between signal pin and adjacent signal pin of -0.11 pF typical
- Zener diode protects supply rail and eliminates the need for external bypass capacitors
- Each I/O pin can withstand over 1000 ESD strikes
- Available in SOIC and MSOP packages
- Pb-free and RoHS compliant
Applications
- USB 2.0 ports at 480 Mbps in desktop PCs, notebooks, and peripherals
- IEEE 1394 Firewire ports at 400 Mbps / 800 Mbps
- DVI and HDMI ports in notebooks, set-top boxes, digital TVs, and LCD displays
- Serial ATA ports in desktop PCs and hard disk drives
- PCI Express ports
- General-purpose high-speed data line ESD protection
- Handheld PCs/PDAs
Q & A
- What is the CM1213-06MR used for?
The CM1213-06MR is used to provide ESD protection for electronic components or subsystems, particularly those requiring minimal capacitive loading.
- What is the ESD protection level of the CM1213-06MR?
The CM1213-06MR provides ESD protection up to ±8 kV per the IEC 61000-4-2 standard.
- What are the typical applications of the CM1213-06MR?
Typical applications include USB 2.0, IEEE 1394 Firewire, DVI, HDMI, Serial ATA, and PCI Express ports.
- What is the channel input capacitance of the CM1213-06MR?
The channel input capacitance is 1.0 pF typical at 1 MHz.
- How many ESD strikes can each I/O pin withstand?
Each I/O pin can withstand over 1000 ESD strikes.
- What package options are available for the CM1213-06MR?
The CM1213-06MR is available in MSOP-8 and SOIC-8 packages.
- Is the CM1213-06MR Pb-free and RoHS compliant?
- What is the role of the integrated Zener diode in the CM1213-06MR?
The integrated Zener diode protects the supply rail against ESD strikes and eliminates the need for external bypass capacitors.
- How should the CM1213-06MR be placed in a PCB layout to maximize ESD protection?
The CM1213-06MR should be located as close as possible to the point of entry of expected electrostatic discharges, with minimal PCB trace lengths to the power supply, ground planes, and between the signal input and the ESD device.
- What are the recommended design considerations for using the CM1213-06MR?
Care must be taken to minimize parasitic series inductances on the supply/ground rails and the signal trace segment between the signal input and the ESD protection device. A 0.22 μF ceramic chip capacitor should be connected between VP and the ground plane for optimal performance.
