EIB-TP-UART-IC データシートの表示（PDF） - Siemens AG
部品番号
コンポーネント説明
メーカー
EIB-TP-UART-IC Datasheet PDF : 26 Pages
| |||
TP-UART-IC
1.2 DC and AC Characteristics
The following parameters are valid in the ambient temperature range ϑamb = -25 οC to 85 οC
and for bus voltage VB+ = 20 to 33 V if it is not otherwise declared. When the bus voltage is
lower than 20 V and no RESET is active then the normal functionality must be fulfilled, but
the parameters may be outside the limits.
1.2.1 Bus Pins VB+ and VB- (Pins 10, 11)
Via these pins the ASIC is connected to the bus line. VB- represents the reference potential.
Symbol Parameter
Min
Max Unit Note
VVB+ positive line voltage
-0.5
45
V 1)
Inormal current consumption in analog mode (without clock)
1 mA
Inormal current consumption in normal mode (with clock)
1.6 mA 4,9152 MHz
1) during surge impulse is allowed and guaranteed by ext. Elements: -20 V for 2 µs and 65 V for 150 µs
1.2.2 Buffer Voltage VSP (Pin 9)
The ASIC delivers a supply voltage of 5 volts to external loads. In order to prevent a rapid
change of bus current as a result of a rapid change of the load an external capacitor at the
pin VSP is used for energy storage. The static voltage is adjusted to app. 8,8 V (8,2 ...9,2)
by an internal regulator.
Symbol Parameter
Min
Max Unit
VVSP Energy buffer voltage
5.76
13
V
CVSP External storage capacitor
80
µF
1) due to the limited current changing rate an overshoot of VVSP after load change may occur
2) recommended 100 µF; must be larger than the capacitor at VCC
Note
1)
2)
1.2.3 Current Controlling Pin CSA (Pin 8)
An external capacitor at this pin prevents a quick change of ASIC current in case of quick
changing bus voltage VB+ or load current IVCC. The ASIC current changes with a rate of
max. 0,5 mA/ms (CCSA = 47 nF).
Symbol Parameter
Min
Max
Unit Note
CCR max. current changing rate (ext. Start, CCSA = 47 nF)
0.2
0.5 mA/ms 1)
1)tolerance of capacitor CCSA = 47nF/50V +/- 5%
The reproduction, transmission or use of this document or it‘s contents is not permitted without express written authority. All
rights, including right created by patent grant or registration of a utility model or design, are reserved. Technical changes
reserved.
25.15.10.41.33a
25.10.01
page 4
Share Link: 