ON CM1293A-02SO, CM1293A-02SR, CM1293A-04MR Schematic [ru]

CM1293A

2 and 4-Channel Low Capacitance ESD Protection Arrays

Product Description

The CM1293A family of diode arrays has been designed to provide ESD protection for electronic components or subsystems requiring minimal capacitive loading. These devices are ideal for protecting systems with high data and clock rates or for circuits requiring low capacitive loading. Each ESD channel consists of a pair of diodes in series that steer the positive or negative ESD current pulse to either the positive (V between V

) or negative (VN) supply rail. A Zener diode is embedded

and V

which helps protect the VCC rail against ESD

strikes. The CM1293A protects against ESD pulses up to ±8kV contact discharge) per the IEC 61000−4−2 Level 4 standard.

This device is particularly well−suited for protecting systems using high−speed ports such as USB2.0, IEEE1394 (FireWire

, i.LINKt), Serial ATA, DVI, HDMI, and corresponding ports in removable storage, digital camcorders, DVD−RW drives and other applications where extremely low loading capacitance with ESD protection are required in a small package footprint.

Features

• Two and Four Channels of ESD Protection

• Provides ESD Protection to IEC61000−4−2

♦ ±8 kV Contact Discharge

• Low Loading Capacitance of 2.0 pF Max

• Low Clamping Voltage

• Channel I/O to I/O Capacitance 1.5 pF Typical

• Zener Diode Protects Supply Rail and Eliminates the Need for

External By−Pass Capacitors

• Each I/O Pin Can Withstand over 1000 ESD Strikes*

• These Devices are Pb−Free and are RoHS Compliant

Applications

• DVI Ports, HDMI Ports in Notebooks, Set Top Boxes, Digital TVs,

LCD Displays

• Serial ATA Ports in Desktop PCs and Hard Disk Drives

• PCI Express Ports

• General Purpose High−Speed Data Line ESD Protection

*Standard test condition is IEC61000−4−2 level 4 test circuit with each pin

subjected to ±8 kV contact discharge for 1000 pulses. Discharges are timed at 1 second intervals and all 1000 strikes are completed in one continuous test run. The part is then subjected to standard production test to verify that all of the tested parameters are within spec after the 1000 strikes.

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SOT−143

SR SUFFIX

CASE 318A

CH1

CM1293A−02SR CM1293A−02SO

MARKING DIAGRAM

XXX MG

XXX = Specific Device Code M = Date Code G = Pb−Free Package

(*Note: Microdot may be in either location)

ORDERING INFORMATION

Device Package Shipping

CM1293A−02SR

CM1293A−02SO

CM1293A−04MR

†For information on tape and reel specifications,

including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D.

SC−74 SO SUFFIX CASE 318F

BLOCK DIAGRAM

CH2

SOT143−4

(Pb−Free)

SC−74

(Pb−Free)

MSOP−10 (Pb−Free)

MSOP−10

MR SUFFIX

CASE 846AE

CH4 V

CH1 CH2

CM1293A−04MR

XXX MG

Tape & Reel

3,000 /

4,000 /

CH3

†

July, 2012 − Rev. 8

1 Publication Order Number:

CM1293A/D

CM1293A

Table 1. PIN DESCRIPTIONS

2−Channel, 4−Lead SOT143−4 Package (CM1293A−02SR)

Pin Name Type Description

1 V

2 CH1 I/O ESD Channel

3 CH2 I/O ESD Channel

4 V

2−Channel, SC−74 Package (CM1293A−02SO)

Pin Name Type Description

1 NC − No Connect

2 VN GND Negative Voltage Supply Rail

3 CH1 I/O ESD Channel

4 CH2 I/O ESD Channel

5 NC − No Connect

6 VP PWR Positive Voltage Supply Rail

4−Channel, 10−Lead MSOP−10 Package (CM1293A−04MR)

Pin Name Type Description

1 CH1 I/O ESD Channel

2 NC − No Connect

3 V

4 CH2 I/O ESD Channel

5 NC − No Connect

6 CH3 I/O ESD Channel

7 NC − No Connect

8 V

9 CH4 I/O ESD Channel

10 NC − No Connect

GND Negative Voltage Supply Rail

PWR Positive Voltage Supply Rail

GND Negative Voltage Supply Rail

PACKAGE/PINOUT DIAGRAM

Top View

VN (1)

D636

CH1 (2)

4−Lead SOT143−4

Top View

NC (1) VP (6)

633

VN (2)

CH1 (3)

2−Channel SC−74

Top View

CH1

CH2

D641

10−Lead MSOP−10

(4)

CH2 (3)

NC (5)

CH2 (4)

NC CH4 V

NC CH3

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CM1293A

SPECIFICATIONS

Table 2. ABSOLUTE MAXIMUM RATINGS

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

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

Table 3. STANDARD OPERATING CONDITIONS

Parameter Rating Units

Operating Temperature Range –40 to +85 °C

Package Power Rating

SOT143−4 Package (CM1293A−02SR) SC−74 Package (CM1293A−02SO) MSOP−10 Package (CM1293A−04MR)

Table 4. ELECTRICAL OPERATING CHARACTERISTICS (Note 1)

Symbol

Operating Supply Voltage (VP−VN) 3.3 5.5 V

Operating Supply Current (VP−VN) = 3.3 V 8.0

Diode Forward Voltage

Top Diode Bottom Diode

LEAK

ESD

Channel Leakage Current T

Channel Input Capacitance At 1 MHz, V

Channel I/O to I/O Capacitance 1.5 pF

ESD Protection − Peak Discharge Voltage at any Channel Input, in System

Contact Discharge per

IEC 61000−4−2 Standard

Human Body Model, MIL−STD−883,

Method 3015

Channel Clamp Voltage

Positive Transients Negative Transients

DYN

Dynamic Resistance

Positive Transients Negative Transients

1. All parameters specified at T

2. Standard IEC 61000−4−2 with C

3. Human Body Model per MIL−STD−883, Method 3015, C

4. These measurements performed with no external capacitor on V

Parameter Conditions Min Ty p Max Units

= 8 mA, T

= 25°C, V

= 25°C (Notes 2 and 4)

= 25°C (Notes 3 and 4)

= 25°C, I

(Note 4)

= 25°C, I

(Note 4)

= –40°C to +85°C unless otherwise noted.

Discharge

= 150 pF, R

Discharge

= 330 W, VP = 3.3 V, VN grounded.

= 100 pF, R

= 25°C

= 5 V, V

= 3.3 V, V

= 1A, tP = 8/20 mS

= 0 V ±0.1 ±1.0

= 0 V, V

Discharge

225 225 400

0.60

= 1.65 V 2.0 pF

0.80

±8

±15

+9.9 –1.6

0.96

0.5

= 1.5 kW, VP = 3.3 V, VN grounded.

0.95

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