Datasheet

SN65ALS180, SN75ALS180
DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052G – AUGUST 1987 – REVISED APRIL 2003
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DRIVERS
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS
†
MIN TYP
‡
MAX UNIT
V
IK
Input clamp voltage I
I
= –18 mA –1.5 V
V
O
Output voltage I
O
= 0 0 6 V
|V
OD1
| Differential output voltage I
O
= 0 1.5 6 V
|V
OD2
| Differential output volta
g
e
R
L
= 100 Ω, See Figure 1
1/2 V
OD1
or 2
§
V
OD2
g
R
L
= 54 Ω, See Figure 1 1.5 2.5 5
V
OD3
Differential output voltage V
test
= –7 V to 12 V, See Figure 2 1.5 5 V
∆|V
OD
|
Change in magnitude of
differential output voltage
¶
R
L
= 54 Ω or 100 Ω, See Figure 1 ±0.2 V
V
OC
Common-mode output voltage R
L
= 54 Ω or 100 Ω, See Figure 1
3
–1
V
∆|V
OC
|
Change in magnitude of
common-mode output voltage
¶
R
L
= 54 Ω or 100 Ω, See Figure 1 ±0.2 V
I
O
Out
p
ut current
Output disabled
V
O
= 12 V 1
mA
I
O
Output
current
(see Note 5)
V
O
= –7 V –0.8
mA
I
IH
High-level input current V
I
= 2.4 V 20 µA
I
IL
Low-level input current V
I
= 0.4 V –400 µA
#
V
O
= –6 V SN75ALS180 –250
#
V
O
= –4 V SN65ALS180 –250
I
OS
Short-circuit output current
#
V
O
= 0 All –150
mA
V
O
= V
CC
All 250
V
O
= 8 V All 250
I
CC
Supply current No load
Driver outputs enabled,
Receiver disabled
25 30
mA
CC
y
Outputs disabled 19 26
†
The power-off measurement in TIA/EIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs.
‡
All typical values are at V
CC
= 5 V, T
A
= 25°C.
§
The minimum V
OD2
with 100-Ω load is either 1/2 V
OD2
or 2 V, whichever is greater.
¶
∆|V
OD
| and ∆|V
OC
| are the changes in magnitude of V
OD
and V
OC
, respectively, that occur when the input is changed from a high level to a low
level.
#
Duration of the short circuit should not exceed one second for this test.
NOTE 5: This applies for both power on and off; refer to TIA/EIA-485-A for exact conditions. The TIA/EIA-422-B limit does not apply for a combined
driver and receiver terminal.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER TEST CONDITIONS MIN TYP
‡
MAX UNIT
t
d(OD)
Differential output delay time R
L
= 54 Ω, C
L
= 50 pF, See Figure 3 3 8 13 ns
Pulse skew (t
d(ODH)
– t
d(ODL)
) R
L
= 54 Ω, C
L
= 50 pF, See Figure 3 1 6 ns
t
t(OD)
Differential output transition time R
L
= 54 Ω, C
L
= 50 pF, See Figure 3 3 8 13 ns
t
PZH
Output enable time to high level R
L
= 110 Ω, See Figure 4 23 50 ns
t
PZL
Output enable time to low level R
L
= 110 Ω, See Figure 5 19 24 ns
t
PHZ
Output disable time from high level R
L
= 110 Ω, See Figure 4 8 13 ns
t
PLZ
Output disable time from low level R
L
= 110 Ω, See Figure 5 8 13 ns
‡
All typical values are at V
CC
= 5 V and T
A
= 25°C.