LTC487
2
ELECTRICAL C
C
HARA TERISTICS
C
D
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
W
U
U
PACKAGE/ORDER I FOR ATIO
(Note 1)
Supply Voltage (V
CC
) ............................................... 12V
Control Input Voltages .................... – 0.5V to V
CC
+ 0.5V
Driver Input Voltages ...................... – 0.5V to V
CC
+ 0.5V
Driver Output Voltages ..........................................
±
14V
Control Input Currents ........................................
±
25mA
Driver Input Currents ..........................................
±
25mA
Operating Temperature Range
Commercial ............................................ 0
°
C to 70
°
C
Industrial ........................................... – 40
°
C to 85
°
C
Storage Temperature Range ................. – 65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec.)................. 300
°
C
ORDER PART
NUMBER
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
DI1
DO1A
DO1B
EN12
DO2B
DO2A
DI2
GND
DI3
DO3A
DO3B
EN34
DO4B
DO4A
DI4
V
N PACKAGE
16-LEAD PLASTIC DIP
TOP VIEW
CC
S PACKAGE
16-LEAD PLASTIC SOL
T
JMAX
= 125
°
C,
θ
JA
= 70
°
C/W (N)
T
JMAX
= 150
°
C,
θ
JA
= 95
°
C/W (S)
LTC487CN
LTC487CSW
LTC487IN
LTC487ISW
pins are negative. All voltages are referenced to device GND unless
otherwise specified.
Note 3:
All typicals are given for V
CC
= 5V and Temperature = 25
°
C.
Note 1:
Absolute maximum ratings are those beyond which the safety of
the device cannot be guaranteed.
Note 2:
All currents into device pins are positive; all currents out of device
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
t
PLH
Driver Input to Output
R
DIFF
= 54
Ω
,
C
L1
= C
L2
= 100pF
10
30
50
ns
t
PHL
Driver Input to Output
(Figures 1, 4)
10
30
50
ns
t
SKEW
Driver Output to Output
5
15
ns
t
r,
t
f
Driver Rise or Fall Time
5
20
25
ns
t
ZH
Driver Enable to Output High
C
L
= 100pF (Figures 2, 5) S2 Closed
35
70
ns
t
ZL
Driver Enable to Output Low
C
L
= 100pF (Figures 2, 5) S1 Closed
35
70
ns
t
LZ
Driver Disable Time from Low
C
L
= 15pF (Figures 2, 5) S1 Closed
35
70
ns
t
HZ
Driver Disable Time from High
C
L
= 15pF (Figures 2, 5) S2 Closed
35
70
ns
V
CC
= 5V
±
5%, 0
°
C
≤
T
A
≤
70
°
C (Note 2, 3)
S
U
G C
C
HARA TERISTICS
WITCHI
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OD1
Differential Driver Output Voltage (Unloaded)
I
O
= 0
5
V
V
OD2
Differential Driver Output Voltage (With Load)
R = 50
Ω
; (RS422)
2
V
R = 27
Ω
; (RS485) (Figure 3)
1.5
5
V
V
OD
Change in Magnitude of Driver Differential
R = 27
Ω
or R = 50
Ω
0.2
V
Output Voltage for Complementary Output States
(Figure 3)
V
OC
Driver Common-Mode Output Voltage
3
V
⏐
V
OC
⏐
Change in Magnitude of Driver Common-Mode
0.2
V
Output Voltage for Complementary Output States
V
IH
Input High Voltage
DI, EN12, EN34
2.0
V
V
IL
Input Low Voltage
0.8
V
I
IN1
Input Current
±
2
µ
A
I
CC
Supply Current
No Load Output Enabled
110
200
µ
A
Output Disabled
110
200
µ
A
I
OSD1
Driver Short-Circuit Current, V
OUT
= High
V
O
= – 7V
100
250
mA
I
OSD2
Driver Short-Circuit Current, V
OUT
= Low
V
O
= 12V
100
250
mA
I
OZ
High Impedance State Output Current
V
O
= – 7V to 12V
±
10
±
200
µ
A
V
CC
= 5V
±
5%, 0
°
C
≤
T
A
≤
70
°
C (Commercial), – 40
°
C
≤
T
A
≤
85
°
C (Industrial) (Note 2, 3)
Consult factory for Military grade parts.