MAX232, MAX232I
DUAL EIA 232 DRIVERS/RECEIVERS
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
VOH
VOL
ro
High-level output voltage
Low-level output voltage‡
Output resistance
T1OUT, T2OUT
T1OUT, T2OUT
T1OUT, T2OUT
TEST CONDITIONS
RL = 3 kΩ to GND
RL = 3 kΩ to GND
VS+ = VS− = 0,
VCC = 5.5 V,
VO =
±2
V
VO = 0
300
MIN
5
TYP†
7
−7
−5
MAX
UNIT
V
V
Ω
IOS§ Short-circuit output current
T1OUT, T2OUT
±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
SR
SR(t)
Driver slew rate
Driver transition region slew rate
Data rate
NOTE 4: Test conditions are C1−C4 = 1
µF
at VCC = 5 V
±
0.5 V.
TEST CONDITIONS
RL = 3 kΩ to 7 kΩ,
See Figure 2
See Figure 3
One TOUT switching
3
120
MIN
TYP
MAX
30
UNIT
V/µs
V/µs
kbit/s
RECEIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (see Note 4)
PARAMETER
VOH
VOL
VIT+
VIT−
High-level output voltage
Low-level output voltage‡
Receiver positive-going input
threshold voltage
Receiver negative-going input
threshold voltage
R1OUT, R2OUT
R1OUT, R2OUT
R1IN, R2IN
R1IN, R2IN
TEST CONDITIONS
IOH = −1 mA
IOL = 3.2 mA
VCC = 5 V,
VCC = 5 V,
TA = 25°C
TA = 25°C
0.8
1.7
1.2
MIN
3.5
0.4
2.4
TYP†
MAX
UNIT
V
V
V
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
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)
tPHL(R)
Receiver propagation delay time, low- to high-level output
Receiver propagation delay time, high- to low-level output
TYP
500
500
UNIT
ns
ns
NOTE 4: Test conditions are C1−C4 = 1
µF
at VCC = 5 V
±
0.5 V.
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
