MAX232_07 Datasheet, PDF (4/16 Pages) Texas Instruments – DUAL EIA-232 DRIVERS/RECEIVERS

MAX232, MAX232I
ą
DUAL EIAĆ232 DRIVERS/RECEIVERS
ą
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
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
VOL Low-level output voltage‡
T1OUT, T2OUT
T1OUT, T2OUT
RL = 3 kΩ to GND
RL = 3 kΩ to GND
5
7
V
−7
−5 V
ro
Output resistance
T1OUT, T2OUT VS+ = VS− = 0, VO = ±2 V
300
Ω
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, V_CC = 5 V, T_A = 25°C (see Note 4)
PARAMETER
TEST CONDITIONS
SR
Driver slew rate
RL = 3 kΩ to 7 kΩ,
See Figure 2
SR(t) Driver transition region slew rate
See Figure 3
Data rate
One TOUT switching
NOTE 4: Test conditions are C1−C4 = 1 µF at VCC = 5 V ± 0.5 V.
MIN TYP MAX UNIT
30 V/µs
3
V/µs
120
kbit/s
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
VOL
VIT+
High-level output voltage
Low-level output voltage‡
Receiver positive-going input
threshold voltage
R1OUT, R2OUT
R1OUT, R2OUT
IOH = −1 mA
IOL = 3.2 mA
R1IN, R2IN
VCC = 5 V,
TA = 25°C
3.5
V
0.4 V
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
1V
ri
Receiver input resistance
R1IN, R2IN
VCC = 5,
TA = 25°C
3
5
7 kΩ
† _{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, V_CC = 5 V, T_A = 25°C (see Note 4 and Figure 1)
PARAMETER
tPLH(R) Receiver propagation delay time, low- to high-level output
tPHL(R) Receiver propagation delay time, high- to low-level output
NOTE 4: Test conditions are C1−C4 = 1 µF at VCC = 5 V ± 0.5 V.
TYP UNIT
500 ns
500 ns
4
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