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PDF ISL3295E Data sheet ( Hoja de datos )
| Número de pieza | ISL3295E | |
| Descripción | RS-485/RS-422 Transmitters | |
| Fabricantes | Intersil | |
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DATASHEET
±16.5kV ESD Protected, +125°C, 3.0V to 5.5V,
SOT-23/TDFN Packaged, Low Power, RS-485/RS-422
Transmitters
ISL3293E, ISL3294E, ISL3295E
ISL3296E, ISL3297E, ISL3298E
The Intersil ISL3293E, ISL3294E, ISL3295E, ISL3296E,
ISL3297E, ISL3298E are ±16.5kV HBM ESD Protected (7kV
IEC61000 contact), 3.0V to 5.5V powered, single transmitters
for balanced communication using the RS-485 and RS-422
standards. These drivers have very low bus currents (±40mA),
so they present less than a “1/8 unit load” to the RS-485 bus.
This allows more than 256 transmitters on the network without
violating the RS-485 specification’s 32 unit load maximum, and
without using repeaters.
Hot Plug circuitry ensures that the Tx outputs remain in a high
impedance state while the power supply stabilizes.
The ISL3293E, ISL3294E, ISL3296E, ISL3297E utilize slew rate
limited drivers which reduce EMI, and minimize reflections from
improperly terminated transmission lines, or from unterminated
stubs in multidrop and multipoint applications. Drivers on the
ISL3295E and ISL3298E are not limited, so they can achieve the
20Mbps data rate. All versions are offered in industrial and
extended industrial (-40°C to +125°C) temperature ranges.
A 26% smaller footprint is available with the ISL3296E,
ISL3297E, ISL3298E’s TDFN package. These devices also
feature a logic supply pin (VL) that sets the switching points of
the DE and DI inputs to be compatible with a lower supply
voltage in mixed voltage systems.
For companion single RS-485 receivers in micro packages,
please see the ISL3280E, ISL3281E, ISL3282E, ISL3283E,
ISL3284E datasheet.
Features
• High ESD protection on RS-485 outputs . . . . ±16.5kV HBM
- IEC61000-4-2 contact test method . . . . . . . . . . . . . . . ±7kV
- Class 3 ESD level on all other pins. . . . . . . . . . . .>8kV HBM
• Specified for +125°C operation (VCC ≤ 3.6V only)
• Logic supply pin (VL) eases operation in mixed supply
systems (ISL3296E through ISL3298E only)
• Hot plug - Tx outputs remain three-state during power-up
• Low Tx leakage allows >256 devices on the bus
• High data rates. . . . . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• Low quiescent supply current. . . . . . . . . . . . . . . 150µA (max)
- Very low shutdown supply current . . . . . . . . . . . 1µA (max)
• -7V to +12V common-mode output voltage range
(VCC ≤ 3.6V only)
• Current limiting and thermal shutdown for driver overload
protection (VCC ≤ 3.6V only)
• Tri-statable Tx outputs
• 5V tolerant logic inputs when VCC ≤5V
• Pb-free (RoHS compliant)
Applications
• Clock distribution
• High node count systems
• Space constrained systems
• Security camera networks
• Building environmental control/lighting systems
• Industrial/process control networks
PART NUMBER
ISL3293E (No longer available or supported,
recommended replacement: ISL32613E)
ISL3294E (No longer available or supported,
recommended replacement: ISL32614E)
ISL3295E
ISL3296E
(No longer available or supported)
ISL3297E
(No longer available or supported)
ISL3298E
TABLE 1. SUMMARY OF FEATURES
DATA
TX MAXIMUM
RATE SLEW RATE HOT VL ENABLE? QUIESCENT LOW POWER
FUNCTION (Mbps) LIMITED? PLUG? PIN? (Note 11) ICC (µA) SHUTDOWN?
1 Tx 0.25 YES YES NO YES
150
YES
PIN
COUNT
6 Ld SOT
1 Tx 0.5 YES YES NO YES
150
YES 6 Ld SOT
1 Tx 20
NO YES NO YES
1 Tx 0.25 YES YES YES YES
150
150
YES 6 Ld SOT
YES 8 Ld TDFN
1 Tx 0.5 YES YES YES YES
150
YES 8 Ld TDFN
1 Tx 20
NO YES YES YES
150
YES 8 Ld TDFN
September 25, 2015
FN6544.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2007, 2014, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL3293E, ISL3294E, ISL3295E ISL3296E, ISL3297E, ISL3298E
Absolute Maximum Ratings
VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
VL to GND (ISL3296E thru ISL3298E Only) . . . . . . . . -0.3V to (VCC + 0.3V)
Input Voltages
DI, DE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
Output Voltages
Y, Z (VCC ≤ 3.6V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +13V
Y, Z (VCC > 3.6V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC +0.5V
Short-circuit Duration
Y, Z (VCC ≤ 3.6V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Y, Z (VCC > 3.6V, Note 13) . . . . . . . . . . . . . . . . . . . . . . . . . 1s at <300mA
ESD Rating . . . . . . . . . . . . . . . . . . See Electrical Specifications on page 6
Thermal Information
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
6 Ld SOT-23 Package (Note 5) . . . . . . . . . .
177
N/A
8 Ld TDFN Package (Notes 6, 7). . . . . . . . .
65
8
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Operating Conditions
Temperature Range
F Suffix (VCC ≤ 3.6V only). . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
I Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
5. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
6. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
7. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Test Conditions: VCC = 3.0V to 5.5V, VL = VCC (ISL3296E, ISL3297E, ISL3298E only), typicals are at
TA = +25°C, unless otherwise specified. (Note 8)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
MIN
TYP
MAX
(°C) (Note 12) (Note 14) (Note 12)
DC CHARACTERISTICS
Driver Differential VOUT
Change in Magnitude of Driver
Differential VOUT for
Complementary Output States
VOD
VOD
RL = 100Ω (RS-422)
(Figure 4A)
RL = 54Ω (RS-485)
(Figure 4A)
No load
VCC ≥ 3.15V
VCC ≥ 4.5V
VCC ≥ 3.0V
VCC ≥ 4.5V
RL = 60Ω, -7V ≤ VCM ≤ 12V (Figure 4B)
RL = 54Ω or 100Ω (Figure 4A)
Full 2
Full 3
Full 1.5
Full 2.5
Full -
Full 1.5
Full -
2.3
3.8
2
3.4
-
2, 3.4
0.01
-
-
VCC
VCC
VCC
-
0.2
Driver Common-mode VOUT
Change in Magnitude of Driver
Common-mode VOUT for
Complementary Output States
VOC
VOC
RL = 54Ω or 100Ω
(Figure 4A)
VCC ≤ 3.6V
VCC ≤ 5.5V
RL = 54Ω or 100Ω (Figure 4A)
Full -
Full -
Full -
2
-
0.01
3
3.2
0.2
Input High Voltage (DI, DE)
VIH1 VL = VCC if ISL3296E, VCC ≤ 3.6V
VIH2 ISL3297E, ISL3298E VCC ≤ 5.5V
VIH3 2.7V ≤ VL < 3.0V (ISL3296E, ISL3297E,
ISL3298E only)
Full 2.2
Full 3
Full 2
-
-
-
-
-
-
VIH4 2.3V ≤ VL < 2.7V (ISL3296E, ISL3297E,
ISL3298E only)
Full 1.65
-
-
VIH5 1.6V ≤ VL < 2.3V (ISL3296E, ISL3297E,
ISL3298E only)
Full 0.7*VL
-
-
VIH6 1.35V ≤ VL < 1.6V (ISL3296E, ISL3297E,
ISL3298E only)
25
-
0.5*VL
-
UNIT
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Submit Document Feedback
5
FN6544.3
September 25, 2015
5 Page 
ISL3293E, ISL3294E, ISL3295E ISL3296E, ISL3297E, ISL3298E
In the event of a major short-circuit condition, devices also include
a thermal shutdown feature that disables the drivers whenever the
die temperature becomes excessive. This eliminates the power
dissipation, allowing the die to cool. The drivers automatically
reenable after the die temperature drops about +20°C. If the
contention persists, the thermal shutdown/reenable cycle repeats
until the fault is cleared.
At VCC > 3.6V, the instantaneous short-circuit current is high
enough that output stage damage may occur during short-circuit
conditions to voltages outside of GND to VCC, before the
short-circuit limiting and thermal shutdown activate. For
VCC = 5V operation, if output short-circuits are a possibility
(e.g., due to bus contention), it is recommended that a 5Ω
resistor be inserted in series with each output. This resistor limits
the instantaneous current below levels that can cause damage.
The driver VOD at VCC = 5V is so large that this small added
resistance has little impact.
High Temperature Operation
Due to power dissipation and instantaneous output short-circuit
current levels at VCC = 5V, these transmitters may not be
operated at +125°C with VCC > 3.6V.
At VCC = 3.6V, even the SOT-23 versions may be operated at
+125°C, while driving a 100’, double terminated, CAT 5 cable at
20Mbps, without triggering the thermal SHDN circuit.
Low Power Shutdown Mode
These BiCMOS transmitters all use a fraction of the power
required by their bipolar counterparts, but they also include a
shutdown feature that reduces the already low quiescent ICC to a
1µA trickle. These devices enter shutdown whenever the driver
disables (DE = GND).
Typical Performance Curves VCC = VL = 3.3V, TA = +25°C, unless otherwise specified.
110
100
90 +85°C
80
70
+125°C
60
+25°C
2.4
2.3
2.2 RDIFF = 100Ω
2.1
2.0
50 1.9 RDIFF = 54Ω
40
1.8
30
20 1.7
10
0 +25°C
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
DIFFERENTIAL OUTPUT VOLTAGE (V)
FIGURE 9. DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT
VOLTAGE
1.6
1.5
-40
-15
10 35 60
TEMPERATURE (°C)
85
110
FIGURE 10. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs
TEMPERATURE
125
100
90
80
70
60
50
40
30
20
10
0
-40
-15
10 35 60
TEMPERATURE (°C)
DE = VCC = VL
85 110 125
FIGURE 11. SUPPLY CURRENT vs TEMPERATURE
40
35
VL = 3.3V
30
VCC = 3.3V
25
20
15
VL = 2.5V
10
5 VL ≤ 2V
0
0 1 2 3 4 5 6 7 7.5
DI VOLTAGE (V)
FIGURE 12. VL SUPPLY CURRENT vs LOGIC PIN VOLTAGE
Submit Document Feedback 11
FN6544.3
September 25, 2015
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ISL3295E.PDF ] | |
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