SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176
DIFFERENTIAL BUS TRANSCEIVERS
SLLS067G − AUGUST 1990 − REVISED APRIL 2006
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER
td(OD)
tt(OD)
tsk(p)
tPZH
tPZL
tPHZ
Differential output delay time
Differential output transition time
Pulse skew ( | td(ODH) − td(ODL) | )
Output enable time to high level
Output enable time to low level
Output disable time from high level
RL = 110
Ω,
RL = 110
Ω,
RL = 110
Ω,
See Figure 4
See Figure 5
See Figure 4
See Figure 5
TEST CONDITIONS
SN55LBC176
SN65LBC176Q
MIN
RL = 54
Ω
Ω,
See Figure 3
8
CL = 50 pF,
12
6
65
65
105
105
TYP
MAX
31
SN65LBC176
SN75LBC176
MIN
8
12
0
6
35
35
60
35
TYP†
MAX
25
ns
ns
ns
ns
ns
ns
ns
UNIT
tPLZ
Output disable time from low level
RL = 110
Ω,
† All typical values are at VCC = 5 V, TA = 25°C.
SYMBOL EQUIVALENTS
DATA SHEET PARAMETER
VO
| VOD1 |
| VOD2 |
| VOD3 |
∆
| VOD |
VOC
∆
| VOC |
IOS
IO
RS-485
Voa, Vob
Vo
Vt (RL = 54
Ω)
Vt (test termination
measurement 2)
| | Vt | − | Vt | |
| Vos |
| Vos − Vos |
None
Iia, Iib
6
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•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
