Datasheet

SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS040H – AUGUST 1987 – REVISED JUNE 2000
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature range (unless otherwise noted)
SN65ALS176
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
t
pd
Propagation time
V
ID
= –1.5 V to 1.5 V,
See Figure 7
C
L
= 15 pF,
25 ns
t
sk(p)
Pulse skew
§
V
ID
= –1.5 V to 1.5 V,
See Figure 7
C
L
= 15 pF,
0 2 ns
t
sk(lim)
Pulse skew
¶
R
L
= 54 Ω,
See Figure 3
C
L
= 50 pF,
15 ns
t
PZH
Output enable time to high level C
L
= 15 pF, See Figure 8 11 18 ns
t
PZL
Output enable time to low level C
L
= 15 pF, See Figure 8 11 18 ns
t
PHZ
Output disable time from high level C
L
= 15 pF, See Figure 8 50 ns
t
PLZ
Output disable time from low level C
L
= 15 pF, See Figure 8 30 ns
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
§
Pulse skew is defined as the |t
PLH
– t
PHL
| of each channel of the same device.
¶
Skew limit is the maximum difference in propagation delay times between any two channels of any two devices.
SN75ALS176, SN75ALS176A, SN75ALS176B
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
’ALS176
V 15Vt 15V
C15F
9 14 19
t
pd
Propagation time
’ALS176A
V
ID
= –1.5 V to 1.5 V,
See Figure 7
C
L
= 15 pF,
10.5
14 18
ns
’ALS176B
See
Figure
7
11.5 13 16.5
t
sk(p)
Pulse skew
‡
V
ID
= –1.5 V to 1.5 V,
See Figure 7
C
L
= 15 pF,
0 2 ns
§
’ALS176
R54Ω
C50F
10
t
sk(lim)
Pulse skew
§
’ALS176A
R
L
= 54 Ω,
See Figure 3
C
L
= 50 pF,
7.5
ns
()
’ALS176B
See
Figure
3
5
t
PZH
Output enable time to high level C
L
= 15 pF, See Figure 8 7 14 ns
t
PZL
Output enable time to low level C
L
= 15 pF, See Figure 8 20 35 ns
t
PHZ
Output disable time from high level C
L
= 15 pF, See Figure 8 20 35 ns
t
PLZ
Output disable time from low level C
L
= 15 pF, See Figure 8 8 17 ns
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
Pulse skew is defined as the |t
PLH
– t
PHL
| of each channel of the same device.
§
Skew limit is the maximum difference in propagation delay times between any two channels of any two devices.
PARAMETER MEASUREMENT INFORMATION
V
OD2
V
OC
R
L
2
R
L
2
Figure 1. Driver V
OD2
and V
OC