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ST75185CN View Datasheet(PDF) - STMicroelectronics

Part NameDescriptionManufacturer
ST75185CN MULTIPLE RS-232 DRIVERS AND RECEIVERS ST-Microelectronics
STMicroelectronics ST-Microelectronics
ST75185CN Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ST75185
DRIVER SWITCHING CHARACTERISTICS
(VDD = 12V, VSS = -12V, VCC = 5V TA = 25 oC)
Symb ol
P a ra met er
Test Con dition s
Value
Min. Typ. Max.
tPLH Propagation Delay Time, Low to High RL = 3 to 7 KCL = 15 pF
Level Output
(See Figures 3, 4)
315 500
tPHL Propagation Delay Time High to Low
Level Output
RL = 3 to 7 KCL = 15 pF
(See Figures 3, 4)
75 175
tTLH Transition Time Low to High Level
Output
RL = 3 to 7 KCL = 15 pF
(See Figures 3, 4)
60 100
RL = 3 to 7 KCL = 2500 pF
(Note 6, See Figure 3, 4)
1.7 2.5
tTHL Transition Time High to Low Level
Output
RL = 3 to 7 KCL = 15 pF
(See Figure 3, 4)
40 7.5
RL = 3 to 7 KCL = 2500 pF
(Note 6, See Figure 3, 4)
NOTE 6: Measured between -3V and 3V points of output waveform (EIA-232-E conditions), all unused inputs are tied.
1.5 2.5
Unit
ns
ns
ns
µs
ns
µs
RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING CONDITIONS
Symb ol
P a ra met er
Test Con dition s
VT+ Positive Going Threshold Voltage
VT- Negative Going Threshold Voltage
(See Figure 6)
TA = 25 oC (See Figure 6)
Vhys Input Hysteresis (VT+ - VT-)
VOH High Level Output Voltage
IOH = -0.5mA
VIH = 0. 75 V
Inputs Open
VOL Low Level Output Voltage
VI = 3 V IOL = 10 mA
IIH High Level Input Current
VI = 25 V (See Figure 6)
VI = 3 V (See Figure 6)
IIL Low Level Input Current
VI = -25 V (See Figure 6)
VI = -3 V (See Figure 6)
IOS Short-Circuit Output Current
VI = 0 V VO = 0 V
(See Figure 5)
Alltypical values are at TA = 25 oC, VCC = 5V, VDD = 9Vand VSS = -9V
Value
Min. Typ. Max.
2.2 2.4
0.75 0.97
0.5
2.6 4
5
2.6
0.2 0.45
3.6
8.3
0.43
-3.6
-8.3
-0.43
-3.4 -12
Unit
V
V
V
V
V
mA
mA
mA
RECEIVER SWITCHING CHARACTERISTICS
(VDD = 12V, VSS = -12V, VCC = 5V TA = 25 oC)
Sy mbo l
Parameter
Test Conditions
tPLH Propagation Delay Time, Low to High RL = 5 KCL = 50 pF
Level Output
(See Figure 6)
tPHL Propagation Delay Time High to Low
Level Output
RL = 5 KCL = 50 pF
(See Figure 6)
tTLH Transition Time Low to High Level
Output
RL = 5 KCL = 50 pF
(See Figure 6)
tTHL Transition Time High to Low Level
Output
RL = 5 KCL = 50 pF
(See Figure 6)
Value
Min. Typ . Max.
400 1000
Unit
ns
70 150 ns
200 525 ns
20 60
ns
5/12
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