ISL32457EIUZ-T7A Intersil, ISL32457EIUZ-T7A Datasheet - Page 9

• 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

Electrical Specifications
V
NOTES:
10. Supply current specification is valid for loaded drivers when DE = 0V.
11. Applies to peak current. See “Typical Performance Curves” beginning on page 14 for more information.
12. Keep RE = 0 to prevent the device from entering SHDN (does not apply to the ISL32457E).
13. The RE signal high time must be short enough (typically <100ns) to prevent the device from entering SHDN.
14. Transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 60ns, the parts are guaranteed not to enter
15. Keep RE = VCC, and set the DE signal low time >600ns to ensure that the device enters SHDN.
16. Set the RE signal high time >600ns to ensure that the device enters SHDN.
17. Compliance to data sheet limits is assured by one or more methods: production test, characterization and/or design.
18. See “Caution” statement below the “Recommended Operating Conditions” on page 6.
19. Does not apply to the ISL32457E. The ISL32457E has no Rx enable function, and thus no SHDN function.
Test Circuits and Waveforms
Receiver Skew |t
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Output Low
Receiver Disable from Output High
Time to Shutdown
Receiver Enable from Shutdown to
Output High
Receiver Enable from Shutdown to
Output Low
CC
9. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise
= 5V or V
specified.
shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See “Low Power Shutdown Mode” on
page 13.
V
CC
PARAMETER
ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E
CC
DE
DI
= 3.3V, T
PLH
- t
D
FIGURE 3A. V
PHL
A
= +25°C (Note 9). Boldface limits apply over the operating temperature range, -40°C to +85°C.
|
Y
Z
9
OD
V
t
t
OD
SYMBOL
ZH(SHDN)
ZL(SHDN)
t
AND V
t
SHDN
Test Conditions: V
SKD
t
t
t
t
ZH
HZ
ZL
LZ
OC
R
R
(Figure 7)
R
(Note 13)
R
(Note 13)
R
R
(Note 14)
R
(Notes 14, 16)
R
(Notes 14, 16)
L
L
L
L
L
L
L
L
/2
/2
= 1kΩ, C
= 1kΩ, C
= 1kΩ, C
= 1kΩ, C
= 1kΩ, C
= 1kΩ, C
FIGURE 3. DC DRIVER TEST CIRCUITS
V
CC
OC
= 3V to 3.6V and 4.5V to 5.5V, unless otherwise specified. Typicals are at the worst case of
L
L
L
L
L
L
= 15pF, SW = V
= 15pF, SW = GND (Figure 8),
= 15pF, SW = V
= 15pF, SW = GND (Figure 8)
= 15pF, SW = GND (Figure 8),
= 15pF, SW = V
TEST CONDITIONS
CC
CC
CC
(Figure 8),
(Figure 8)
(Figure 8),
V
CC
DE
DI
FIGURE 3B. V
TEMP
D
(°C)
Full
Full
Full
Full
Full
Full
Full
Full
Y
Z
OD
(Note 17)
WITH COMMON MODE LOAD
V
MIN
60
OD
-
-
-
-
-
-
-
(Continued)
160
TYP
4
-
-
-
-
-
-
R
R
L
L
/2
/2
(Note 17)
2500
2500
MAX
600
20
80
80
80
80
375Ω
375Ω
February 20, 2012
V
FN7921.0
CM
UNITS
ns
ns
ns
ns
ns
ns
ns
ns