Si8440/41/42/45
ULTRA LOW POWER QUAD-CHANNEL DIGITAL ISOLATOR
Features
Pin Assignments
High-speed operation:
DC – 150 Mbps
Low propagation delay:
<10 ns typical
Wide Operating Supply Voltage:
2.75–5.5 V
Precise timing:
2 ns pulse width distortion
1 ns channel-channel matching
2 ns pulse width skew
Up to 2500 VRMS isolation
Wide Body SOIC
VDD1
VDD2
GND2
B1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Transient Immunity: 25 kV/µs
Tri-state outputs with ENABLE
control
DC correct
No start-up initialization required
<30 µs startup time
High temperature operation:
125 °C at 150 Mbps
Wide body and narrow body SOIC-
16 packages
GND1
A1
Ultra low power
5 V Operation:
A2
B2
I< 1.25 mA per channel at 1 Mbps
I< 2 mA per channel at 10 Mbps
I< 6 mA per channel at 100 Mbps
2.75 V Operation:
I< 1.25 mA per channel at 1 Mbps
I< 2 mA per channel at 10 Mbps
I< 4 mA per channel at 100 Mbps
A3
A4
B3
B4
EN1/NC
EN2/NC
GND2
GND1
Top View
Narrow Body SOIC
Applications
VDD1
VDD2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND2
B1
GND1
A1
Isolated switch mode supplies
Isolated ADC, DAC
Motor control
Power factor correction systems
A2
B2
A3
A4
B3
Safety Regulatory Approvals*
B4
UL recognition: 2500 VRMS for 1
Minute per UL1577
VDE certification conformity
IEC 60747-5-2
EN1/NC
EN2/NC
GND2
GND1
(VDE0884 Part 2)
CSA component acceptance notice
Top View
Description
Silicon Lab's family of ultra low power digital isolators are CMOS devices
that employ an RF coupler to transmit digital information across an isolation
barrier. Very high speed operation at low power levels is achieved. These
parts are available in 16-pin wide body and narrow body SOIC packages.
Two speed grade options (1 and 150 Mbps) are available and achieve typical
propagation delay of less than 10 ns.
Block Diagram
Si8440/45
Si8441
Si8442
A1
A2
A3
A4
NC
A1
A2
A3
A4
A1
A2
B1
B2
B1
B2
B1
B2
B3
B4
B3
B4
A3
B3
A4
B4
EN2/NC EN1
EN2
EN1
EN2
*Note: Pending.
Rev. 0.64 1/09
Copyright © 2009 by Silicon Laboratories
Si8440/41/42/45
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.