ISL32457EIUZ-T7A Intersil, ISL32457EIUZ-T7A Datasheet - Page 10

• Manufacturer Part Number: ISL32457EIUZ-T7A
• Description: RS-422/RS-485 Interface IC 60V OVP POLV -40+85 5V RS-485 1/2 DUP
• Manufacturer: Intersil

Specifications of ISL32457EIUZ-T7A

• Product Category: RS-422/RS-485 Interface IC
• Rohs: yes
• Data Rate: 250 Kbps, 1 Mbps
• Operating Supply Voltage: 3.3 V to 5 V
• Supply Current: 4.5 mA
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MSOP-8
• Function: Transceiver
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Shutdown: Yes

Test Circuits and Waveforms
SIGNAL
GENERATOR
PARAMETER
SIGNAL
GENERATOR
t
t
ZH(SHDN)
ZL(SHDN)
t
t
t
t
HZ
ZH
LZ
ZL
ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E
V
SIGNAL
GENERATOR
CC
DE
DI
V
OUTPUT
CC
DE
DI
FIGURE 4A. TEST CIRCUIT
FIGURE 5A. TEST CIRCUIT
FIGURE 6A. TEST CIRCUIT
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
D
DE
DI
Y
D
Z
FIGURE 4. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
0 (Note 12)
0 (Note 12)
1 (Note 15)
1 (Note 15)
10
D
Z
Y
RE
X
X
Y
Z
54Ω
1/0
0/1
1/0
0/1
1/0
0/1
C
FIGURE 5. DRIVER ENABLE AND DISABLE TIMES
DI
C
D
L
110Ω
C
D
GND
GND
GND
R
V
V
V
SW
CC
CC
CC
D
FIGURE 6. DRIVER DATA RATE
SW
(Continued)
C
V
L
100
100
100
100
+
OD
50
50
-
GND
V
(pF)
CC
DIFF OUT (Y - Z)
t
Note 14
t
Note 14
ZH
OUT (Y, Z)
OUT (Y, Z)
ZL
OUT (Z)
OUT (Y)
DIFF OUT (Y - Z)
, t
, t
DI
DE
ZH(SHDN)
ZL(SHDN)
DI
Note 14
FIGURE 4B. MEASUREMENT POINTS
FIGURE 5B. MEASUREMENT POINTS
FIGURE 6B. MEASUREMENT POINTS
10%
t
R
90%
t
PLH
50%
50%
SKEW = |t
50%
OUTPUT HIGH
50%
OUTPUT LOW
PLH
- t
PHL
t
t
t
PHL
HZ
LZ
50%
50%
|
V
V
90%
OH
OL
10%
+V
February 20, 2012
+ 0.5V
- 0.5V
-V
t
OD
F
0V
OD
3V
3V
0V
3V
0V
0V
FN7921.0
V
V
+V
-V
V
V
V
OH
OL
OD
0V
OD
OH
CC
OL