ITA6V5B3 STMicroelectronics, ITA6V5B3 Datasheet - Page 4

• Manufacturer Part Number: ITA6V5B3
• Description: TRANSIL ARRAY BIDIR DATA 20-SOIC
• Manufacturer: STMicroelectronics
• Series: TRANSIL™r

Specifications of ITA6V5B3

• Voltage - Reverse Standoff (typ): 5V
• Voltage - Breakdown: 6.5V
• Power (watts): 300W
• Polarization: 9 Channel Array - Unidirectional
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6694-5; ITA6V5B3

Application information
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Application information
This monolithic Transil Array is based on 610 unidirectional Transils with a common cathode
and can be configurated to offer up to 9 bidirectional functions. This imposes a maximum
differential voltage between 2 input pins (see
Table 3.
Figure 8.
Design advantage of ITAxxB3 used with 4-point structure
The ITAxxxB3 has been designed with a 4-point structure
(separated Input/output) to efficiently protect against
disturbances with very high di/dt rates, such as ESD.
The purpose of this 4-point structure is to eliminate the
overvoltage introduced by the parasitic inductances of the
wiring (Ldi/dt).
Efficient protection depends not only on the component
itself, but also on the circuit layout. The drawing given in
figure 9 shows the layout to be used in order to take
advantage of the 4-point structure of the ITAxxxB3.
With this layout, each line to be protected passes through
the protection device.
In this way, it realizes an interface between the data line
and the circuit to be protected, guaranteeing an isolation
between its inputs and outputs.
Order code
ITA6V5B3
ITA18B3
ITA25B3
Maximum differential voltages
RS-232 junction (typical application)
Maximum differential voltage between two input pins at 25°C
Table
3).
± 12.5 v
± 3.5 v
± 9.0 v
Figure 9.
GND
di/dt
Input 1
TX
RX
RTS
CTS
DTR
DSR
CARRIER DET.
AUX
GND
The 4 point structure
GND
Chip
U
Output 1
ITAxxB3