RS-485 DRIVER SWITCHING CHARACTERISTICS (SLOW DATA RATE (115kbps, QFN ONLY), 485/232 = V
參數(shù)資料
型號(hào)： ISL41387EVAL1Z
廠商： Intersil
文件頁數(shù)： 2/27頁
文件大?。?/td> 0K
描述： EVALUATION BOARD FOR ISL41387
產(chǎn)品培訓(xùn)模塊： Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝： 1
主要目的： 接口，收發(fā)器，RS-232，RS-422，RS-485
嵌入式： 否
已用 IC / 零件： ISL41387
主要屬性： 2 個(gè)驅(qū)動(dòng)器，2 個(gè)接收器 - RS-232 模式
次要屬性： 1 個(gè)驅(qū)動(dòng)器，1 個(gè)接收器 - RS-422/RS-485 模式
已供物品： 板
10
FN6201.3
November 21, 2007
RS-485 DRIVER SWITCHING CHARACTERISTICS (SLOW DATA RATE (115kbps, QFN ONLY), 485/232 = VCC, SLEW = SPB = GND)
Driver Differential Input to Output
Delay
tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 2)
Full
800
1500
2500
ns
Driver Output Skew
tSKEW
RDIFF = 54Ω, CL = 100pF (Figure 2)
Full
-
350
1250
ns
Driver Differential Rise or Fall Time
tR, tF
RDIFF = 54Ω, CL = 100pF (Figure 2)
Full
1000
2000
3100
ns
Driver Enable to Output Low
tZL
CL = 100pF, SW = VCC (Figure 3)
Full
-
32
600
ns
Driver Enable to Output High
tZH
CL = 100pF, SW = GND (Figure 3)
Full
-
300
600
ns
Driver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 3)
Full
-
31
60
ns
Driver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 3)
Full
-
24
60
ns
Driver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC (Figure 3)
(Note 14)
Full
-
65
800
ns
Driver Enable from Shutdown to
Output High
tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND (Figure 3)
(Note 14)
Full
-
420
800
ns
Driver Maximum Data Rate
fMAX
RDIFF = 54Ω, CL = 100pF (Figure 2)
Full
-
800
-
kbps
RS-485 RECEIVER SWITCHING CHARACTERISTICS (485/232 = VCC, ALL VERSIONS AND SPEEDS)
Receiver Input to Output Delay
tPLH, tPHL (Figure 4)
Full
20
50
90
ns
Receiver Skew | tPLH - tPHL |tSKEW
(Figure 4)
Full
-
3
10
ns
Receiver Maximum Data Rate
fMAX
Full
-
40
-
Mbps
RECEIVER ENABLE/DISABLE CHARACTERISTICS (ALL MODES AND VERSIONS AND SPEEDS)
Receiver Enable to Output Low
tZL
CL = 15pF, SW = VCC (Figure 5)
Full
-
22
60
ns
Receiver Enable to Output High
tZH
CL = 15pF, SW = GND (Figure 5)
Full
-
23
60
ns
Receiver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 5)
Full
-
24
60
ns
Receiver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 5)
Full
-
25
60
ns
Receiver Enable from Shutdown to
Output Low
tZLSHDN
CL = 15pF, SW = VCC (Figure 5)
(Note 14)
RS-485 Mode
Full
-
260
700
ns
RS-232 Mode
25
-
35
-
ns
Receiver Enable from Shutdown to
Output High
tZHSHDN
CL = 15pF, SW = GND (Figure 5)
(Note 14)
RS-485 Mode
Full
-
260
700
ns
RS-232 Mode
25
-
25
-
ns
NOTES:
8. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise
specified.
9. Supply current specification is valid for loaded drivers when DEN = 0V.
10. Applies to peak current. See “Typical Performance Curves” beginning on page 18 for more information.
11. RIN defaults to RS-485 mode (>15kΩ) when the device is unpowered (VCC = 0V), or in SHDN, regardless of the state of the 485/232 pin.
12. VCC ≤ 5.25V.
13. The Slew pin has a pull-up resistor that enables only when in RS-485 mode (485/232 = VCC).
14. ON, RXEN, and DEN all simultaneously switched Low-to-High.
15. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested.
Electrical Specifications
Test Conditions: VCC = 4.5V to 5.5V, C1 - C4 = 0.1μF, VL = VCC (for QFN only), Unless Otherwise Specified.
Typicals are at VCC = 5V, TA = +25°C (Note 8). (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
(Note 15)
TYP
MAX
(Note 15) UNITS
ISL81387, ISL41387
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