DS232 Dallas Semiconductor, DS232 Datasheet - Page 5

• Manufacturer Part Number: DS232
• Description: Dual Rs-232 Transmitter/receiver
• Manufacturer: Dallas Semiconductor

DC ELECTRICAL CHARACTERISTICS (continued)
AC ELECTRICAL CHARACTERISTICS
NOTES:
1. All voltages are referenced to ground.
2. All transmitter outputs loaded with 3 k =to ground
3. V
4. V
5. I
6. I
7. C
RS-232 Receivers
RS-232 Input Voltage Operating Range
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
RS-232 Input Resistance
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
TTL/CMOS Output Short Circuit
Current (V
TTL/CMOS Output Short Circuit
Current (V
PARAMETER
Transition Slew Rate
Transmitter Propagation
Delay TTL to RS-232
Receiver Propagation
Delay RS-232 to TTL
Transmitter + to - Propagation
Delay Difference
Receiver + to - Propagation
Delay Difference
OUT
OUT
L
CC
OUT
= 50 pF - 2500 pF; RL = 3 k =- 7 k ; V
= V+ = V- = 0V; V
= 3.2 mA.
= -1.0 mA.
= 0V.
OUT
OUT
=GND)
=V
CC
)
OUT
= 2V.
SYMBOL
-t
-t
V
V
V
V
t
t
t
t
t
t
V
I
I
CC
V
R
PHLT
PLHT
PHLR
PLHR
PHLT
PHLR
t
PLHT
PLHR
RSC
RSC
ROH
RTH
ROL
SR
RTL
HY
5 of 10
IR
IN
= 5V; TA = 25 C.
MIN
0.8
0.2
3.5
10
-2
25
3
6
V
TYP
CC
300
100
-10
1.3
1.8
0.5
0.2
1.3
1.5
0.5
0.6
30
12
30
5
-0.2
MAX UNITS
2.4
0.4
3.5
3.5
30
1
7
1
1
V/ s
mA
mA
(0 C to 70 C)
(0 C to 70 C)
k
ns
ns
V
V
V
V
V
V
s
s
s
s
NOTES
DS232A
5
6
7