iC-VRV
BIDIRECTIONAL µP INTERFACE TO 24V
Rev A2, Page 1/12
FEATURES
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2 × 4 bidirectional input/output stages at 24 V
Input/output mode programmable for each 4 bits
Guaranteed low-side driving capability of 100 mA
dc
and
500 mA
peak
for pulse load
Short-circuit-proof driver with high electric strength
up to 48 V
Low saturation voltage of 0.4 V at 10 mA and
1.5 V at 500 mA
Programmable pull-down current sources
Built-in free-wheeling diodes with externally accessible
common cathode
Flashing function for the outputs
Programmable digital input filters with externally adjusted
filtering times
Bus capability via high-speed microprocessor interface
Programmable interrupt output
Shutdown at overtemperature and low voltage
APPLICATIONS
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Dual quad low-side driver as
bidirectional µP interface with
digital filtering in 24 V industrial
applications
PACKAGES
PLCC44
BLOCK DIAGRAM
Input/Output Stage 0
D
30
34
VCCA
VCCD
Test
D
NQ
R
4
6
7
41
44
39
2
3
40
42
43
1
35
36
37
38
8
CSN
WRN
R
RDN
ENERR
I/O Logic
CERR
Input/Output Stage 1
Input Filter
Q
up/dwn
3 Bit Counter
DISABLE
IO0
24
Output Latch
Q
R
GND01
25
VCC-1.3V
IO1
26
IO2
CTEST
A0
I/O Logic
A1
D0
D1
D2
D3
D4
D5
D6
D7
RESN
DIV
Chn
DIV
Cln
DIV
Bhn
DIV
Bln
Low Voltage
Thermal Shutdown
GNDD
12
GNDS
13
I/O Logic
Input/Output Stage 7
higher nibble
COM
I/O Logic
Input/Output Stage 6
I/O Logic
Input/Output Stage 5
IO6
GND67
IO7
Input/Output Stage 3
lower nibble
IO4
Input/Output Stage 4
GND45
IO5
I/O Logic
Input/Output Stage 2
GND23
IO3
27
28
29
iC-VRV
I/O Logic
17
18
19
20
21
22
23
Control
Register
Interrupt
Bias
Frequency Divider
INTN
11
CLK
10
BLFQ
9
GNDA
16
PLCC44
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www.ichaus.com
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