ST3243B_11 Datasheet, PDF (7/17 Pages) STMicroelectronics – 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down

ST3243B ST3243C
4
Electrical characteristics
Electrical characteristics
C₁ - C₄ = 0.1 µF, V_CC = 3 V to 5.5 V, T_A = -40 to 85 °C, unless otherwise specified. Typical
values are referred to T_A = 25 °C.
Table 5.
Symbol
Electrical characteristics
Parameter
Test conditions
Min. Typ. Max. Unit
I_ASHDN
Supply current auto-power-down
V_CC = 3.3 or 5.0 V, T_A = 25 °C
All R_IN open, FORCEOFF = V_CC
I_SHDN Shutdown supply current
V_CC = 3.3 or 5.0 V, T_A = 25 °C
All R_IN open, FORCEOFF = GND
I_SUPPLY
Supply current auto-power-down
disabled
V_CC = 3.3 or 5.0 V T_A = 25 °C
FORCEON = FORCEOFF = V_CC
no load
1
10
µA
1
10
µA
0.3
1
mA
C₁ - C₄ = 0.1 µA, V_CC = 3 V to 5.5 V, T_A = -40 to 85 °C, unless otherwise specified. Typical
values are referred to T_A = 25 °C.
Table 6.
Symbol
Logic input electrical characteristics
Parameter
Test conditions
Min. Typ. Max. Unit
V_TIL Input logic threshold low
V_TIH Input logic threshold high
V_THYS
I_IL
I_OL
V_OL
V_OH
Transmitter input hysteresis
Input leakage current
Output leakage current
Output voltage low
Output voltage high
T-IN, FORCEON, FORCEOFF
T-IN, FORCEON, FORCEOFF
V_CC = 3.3 V
V_CC = 5 V
T-IN, FORCEON, FORCEOFF
Receiver disabled
I_OUT = 1.6 mA
I_OUT = -1 mA
0.8
V
2
V
2.4
V
0.5
V
± 0.01 ± 1.0 µA
± 0.05 ± 10 µA
0.4
V
V_CC-0.6 V_CC-0.1
V
C₁ - C₄ = 0.1 µF, V_CC = 3 V to 5.5 V, T_A = -40 to 85 °C, unless otherwise specified. Typical
values are referred to T_A = 25 °C.
Table 7.
Symbol
Auto-power-down electrical characteristics
Parameter
Test conditions
Min. Typ. Max. Unit
V_RITE
V_RITD
V_IOL
V_IOH
Receiver input threshold to
transmitter enabled
Positive threshold
Negative threshold
Receiver input threshold to
transmitter disabled
1 µA supply current
INVALID output voltage LOW
INVALID output voltage HIGH
2.7
-0.3
V_CC-0.6
2.7
V
V
0.3
V
0.4
V
V
Doc ID 7539 Rev 10
7/17