RI-CTL-MB2B-30 Datasheet, PDF (36/40 Pages) Texas Instruments – Series 2000 Reader System

Electrical Data
3.2.1.3 ST21 – RS-422/RS-485 Communication Interface
PARAMETER
DESCRIPTION
V_I, V_IC
V_IC
V_O
I_O
Voltage at any bus terminal
(separately or common mode)
Differential input voltage⁽¹⁾
Output voltage
Output current
I_OH
High-level output current
I_OL
Low-level output current
I_OS
|V_ODI|
|V_OD2|
V_TH
V_TL
R_I
Short circuit current
Differential output voltage
Differential output voltage
Differential input high threshold
voltage
Differential input low threshold
voltage
Input resistance
CONDITIONS
I_O = 0
Output disabled, V_O = 12 V
TX+, TX–
RX+, RX–
TX+, TX–
RX+, RX–
Duration should not
exceed 1 second
I_O = 0
R_L = 54 Ω
V_O = 0 V
V_O = V_CC2
V_O = 2.7 V, I_O = 0.4 mA
V_O = 0.5 V, I_O = 8 mA
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MIN
–7
0
1.5
1.5
+0.3
12
TYP
2.5
MAX UNIT
+12 V
±12 V
V_CC2
V
1 mA
–60
mA
–400
60
mA
8
–150
mA
–250
V_CC2
V
V_CC2
V
V
–0.3 V
kΩ
(1) _{Differential input/output voltage is measured at the one-inverting terminals RX+/TX+ with respect to the inverting terminals}
RX–/TX–.
3.2.1.4 ST24 – Synchronization Interface
PARAMETER
V_{SYNC_I},
V_{SYNC_IC}
V_{SYNC_ID}
V_{SYNC_O}
I_{SYNC_O}
DESCRIPTION
Voltage at any bus terminal
(separately or common mode)
Differentila input voltage
Output voltage
Output current
I_{SYNC_OH}
High-level output current
I_{SYNC_OL}
Low-level output current
I_{SYNC_OS}
|V_{SYNC_OD1}|
|V_{SYNC_OD2}|
V_{SYNC_TH}
V_{SYNC_TL}
R_{SYNC_I}
Short circuit current
Differential output voltage
Differential output voltage
Differential input high threshold
voltage
Differential input low threshold
voltage
Input resistance
CONDITIONS
I_O = 0
Output disabled, V_O = 12 V
TX+, TX–
RX+, RX–
TX+, TX–
RX+, RX–
Duration should not
exceed 1 second
I_O = 0
R_L = 54 Ω
V_O = 0 V
V_O = V_CC2
V_O = 2.7 V, I_O = 0.4 mA
V_O = 0.5 V, I_O = 8 mA
MIN
–7
1.5
1.5
+0.3
12
TYP MAX UNIT
+12 V
(1)_±12
V
V_CC2
V
1 mA
–60
mA
–400
60
mA
8
–150
mA
–250
V_CC2
V
2.5 V_CC2 V
V
–0.3 V
kΩ
(1) _{Differential input/output voltage is measured at the non-inverting terminals RX+/TX+ with respect to the inverting terminals}
RX-/TX-.
36
Specifications
SCBU044 (11-09-21-077) – January 2008
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