LTC1690CMS8#TRPBF Linear Technology, LTC1690CMS8#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC1690CMS8#TRPBF
• Description: IC RCVR/DVR PAIR LOW PWR 8-MSOP
• Manufacturer: Linear Technology
• Type: Driverr

Specifications of LTC1690CMS8#TRPBF

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN
FUNCTION
V
R (Pin 2): Receiver Output. R is high if (A – B)
and low if (A – B) – 200mV.
D (Pin 3): Driver Input. If D is high, Y is taken high and Z
is taken low. If D is low, Y is taken low and Z is taken high.
GND (Pin 4): Ground.
TEST CIRCUITS
SWITCHI G TI E WAVEFOR S
Driver
CC
Figure 1. Driver
DC Test Load #1
D
1
0
U
Y
Z
U
V
V
(Pin 1): Positive Supply. 4.75V < V
OD2
D
O
–V
3V
0V
V
FUNCTIONS
O
O
Z
Y
t
1.5V
SKEW
1690 F01
R
R
U
10%
Z
0
1
50%
Figure 4. Driver Propagation Delays
U
V
U
OC
t
r
TABLES
f = 1MHz, t
90%
Y
1
0
t
PLH
U
1/2 V
W
r
O
V
O
10ns, t
= V(A) – V(B)
Y
Z
V
OD3
f
10ns
Figure 2. Driver
DC Test Load #2
60
375
375
90%
CC
1.5V
< 5.25V.
t
1690 F02
f
V
–7V TO 12V
TST
W
50%
10%
t
t
PHL
SKEW
– 10mV
1690 F04
Y (Pin 5): Driver Output.
Z (Pin 6): Driver Output.
B (Pin 7): Receiver Input.
A (Pin 8): Receiver Input.
Receiver
Note: Table valid with or without termination resistors.
Inputs Shorted
A – B
Inputs Open
–V
D
V
R
OD2
OD2
V
A – B
– 0.01V
– 0.20V
5V
OL
NOTE: t
0V
Figure 5. Receiver Propagation Delays
SKD
Y
Z
Figure 3. Driver/Receiver
Timing Test Load
= |t
R
PHL
1.5V
DIFF
f = 1MHz, t
t
PHL
– t
R
1
0
1
1
PLH
|
r
INPUT
+
+
10ns, t
OUTPUT
C
C
L1
L2
f
10ns
A
B
LTC1690
0V
1.5V
+
t
1690 F05
PLH
7
1690 F03
15pF
R