RI-CTL-MB2B-30 Datasheet, PDF (35/40 Pages) Texas Instruments – Series 2000 Reader System

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3.1.2 Temperature
Operating temperature range: 0 to +70°C
Storage temperature range : –40 to + 85°C
Electrical Data
3.2 Electrical Data
3.2.1 Recommended Operating Conditions, Electrical Characteristics
3.2.1.1 ST22 – Supply
PARAMETER
V_DC
DESCRIPTION
V_CC2
Logic Supply Voltage
P_DIS
I_DC, I_CC2
Power dissipated by the voltage
regulator
Supply Current
I_CC2
V_CC2
I_CC2
Data retention input voltage
Data retention current
CONDITIONS
Connector ST22 pin 5 is used as
logic supply output. V_DC = 7 to 25 V.
Jumper JP6 must be closed.
No external loads. Indicator LEDs
are on.
No external loads. Indicator LEDs
are on.
Output current if ST22 pin 5 is used
as external logic supply output. The
maximum power dissipation must
not be exceeded!
RESET = V_RESOL (Reset active)⁽¹⁾
MIN
TYP MAX UNIT
7
25 V
4.75
5.0
5.25 V
4W
120
200 mA
1A
2.7
3.0
V_CC2
V
2
50 µA
(1) _{A reset can be initiated in one of three ways:}
• Internally by the reset/watchdog circuit
• Externally by using the reset input (pin 3 of ST33)
• Externally by the RS-232 DTR signal (RI-CTL-MB2B only)
3.2.1.2 ST21 – RS-232-C Communication Interface
PARAMETER
V_TXD
V_RXD
V_DTR
V_DSR
V_{RXD_TRES}
VDTR_TRES
Low
High
Low
High
DESCRIPTION
Output Voltage
Swing
Input voltage range
DTR input voltage
DSR Output voltage
CONDITIONS
TXD loaded 3 kΩ to Ground
DSR loaded 3 kΩ to Ground
RXD input threshold V_CC2 = 5 V
DTR input threshold V_CC2 = 5 V
ITXD
RRXD
IDTR
Short circuit current
TXD connected to ground, infinite
duration
DTR current
V_DTR = 12 V
MIN
TYP.
MAX UNIT
＝5
＝9
V
–30
30
V
–30
30
V
3.5
4.1
V_CC2
V
0.8
V
2.4
1.6
3.15
V
2.25
3.85
±18
mA
3
5
7 kΩ
3.6
3.8
4.1 mA
SCBU044 (11-09-21-077) – January 2008
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Specifications
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