
6
LTC1327
Driver Propagation Delay Timing
Receiver Propagation Delay Timing
SWITCHI G TI E WAVEFOR S
WW
U
MANUFACTURER
PART NUMBER
COMPATIBLE
MIN
TYP
MAX
MIN
TYP
MAX
Linear Technology
LT1080
√
0.8
1.3
–
1.7
2.4
LT1137A
√
0.8
1.3
–
1.7
2.4
LT1330
√
0.8
1.3
–
1.7
2.4
LT1281
√
0.8
1.3
–
1.7
2.4
All Others
√
Texas Instruments
SN75189
√
0.65
1
1.25
0.9
1.3
1.6
SN75189A
√
0.65
1
1.25
1.55
1.9
2.25
MAX232
√
0.8
1.2
–
1.7
2.4
SN75C185
√
0.65
1
1.25
1.6
2.1
2.55
Maxim
MAX232A
√
0.8
1.3
–
1.8
2.4
MAX241
√
0.6
1.2
–
1.5
2.4
Sipex
SP232
√
0.8
1.2
–
1.7
2.4
SP301
√
0.75
–
1.35
1.75
2.5
Motorola
MC1489
√
0.75
–
1.25
1
–
1.5
MC1489A
√
0.75
0.8
1.25
1.75
1.95
2.25
National
DS1489
√
0.75
1
1.25
1
1.25
1.5
DS14C89A
√
0.5
–
1.9
1.3
–
2.7
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
The LTC1327 is compatible with RS232 parts. This table
shows some devices and the receiver input thresholds.
1.4V
0V
VCC
0V
V+
V–
0V
DR INPUT
DR OUTPUT
1.4V
t HLD
t LHD
1327 WF01
0.8V
VCC
0V
RX INPUT
RX OUTPUT
1.3V
t HLR
1.7V
t LHR
1327 WF02
VCC
0V
INPUT LOW THRESHOLD
(VIL)
INPUT HIGH THRESHOLD
(VIH)