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MAX232 Dane(HTML) 4 Page - Texas Instruments

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Numer części MAX232
Szczegółowy opis  DUAL ELA-232 DRIBERS/RECEIVERS
Pobierz  17 Pages
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
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MAX232 Datasheet(Arkusz danych) 4 Page - Texas Instruments

 
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MAX232, MAX232I
DUAL EIA232 DRIVERS/RECEIVERS
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
DRIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (see Note 4)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VOH
High-level output voltage
T1OUT, T2OUT
RL = 3 kΩ to GND
5
7
V
VOL
Low-level output voltage‡
T1OUT, T2OUT
RL = 3 kΩ to GND
−7
−5
V
ro
Output resistance
T1OUT, T2OUT
VS+ = VS− = 0,
VO = ±2 V
300
IOS§
Short-circuit output current
T1OUT, T2OUT
VCC = 5.5 V,
VO = 0
±10
mA
IIS
Short-circuit input current
T1IN, T2IN
VI = 0
200
µA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The algebraic convention, in which the least-positive (most negative) value is designated minimum, is used in this data sheet for logic voltage
levels only.
§ Not more than one output should be shorted at a time.
NOTE 4: Test conditions are C1−C4 = 1
µF at VCC = 5 V ± 0.5 V.
switching characteristics, VCC = 5 V, TA = 25°C (see Note 4)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SR
Driver slew rate
RL = 3 kΩ to 7 kΩ,
See Figure 2
30
V
/µs
SR(t)
Driver transition region slew rate
See Figure 3
3
V
/µs
Data rate
One TOUT switching
120
kbit/s
NOTE 4: Test conditions are C1−C4 = 1
µF at VCC = 5 V ± 0.5 V.
RECEIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (see Note 4)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VOH
High-level output voltage
R1OUT, R2OUT
IOH = −1 mA
3.5
V
VOL
Low-level output voltage‡
R1OUT, R2OUT
IOL = 3.2 mA
0.4
V
VIT+
Receiver positive-going input
threshold voltage
R1IN, R2IN
VCC = 5 V,
TA = 25°C
1.7
2.4
V
VIT−
Receiver negative-going input
threshold voltage
R1IN, R2IN
VCC = 5 V,
TA = 25°C
0.8
1.2
V
Vhys
Input hysteresis voltage
R1IN, R2IN
VCC = 5 V
0.2
0.5
1
V
ri
Receiver input resistance
R1IN, R2IN
VCC = 5,
TA = 25°C
3
5
7
k
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The algebraic convention, in which the least-positive (most negative) value is designated minimum, is used in this data sheet for logic voltage
levels only.
NOTE 4: Test conditions are C1−C4 = 1
µF at VCC = 5 V ± 0.5 V.
switching characteristics, VCC = 5 V, TA = 25°C (see Note 4 and Figure 1)
PARAMETER
TYP
UNIT
tPLH(R)
Receiver propagation delay time, low- to high-level output
500
ns
tPHL(R)
Receiver propagation delay time, high- to low-level output
500
ns
NOTE 4: Test conditions are C1−C4 = 1
µF at VCC = 5 V ± 0.5 V.


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