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参数资料
| 型号： | DS275 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Line Driver or Receiver |
| 英文描述： | LINE TRANSCEIVER, PDIP8 |
| 封装： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件页数： | 14/19页 |
| 文件大小： | 1664K |
| 代理商： | DS275 |
MAX1480E/MAX1490E
±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
4
_______________________________________________________________________________________
Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to logic-
side ground (GND_), unless otherwise specified.
Note 2: For DE
and DI pin descriptions, see Detailed Block Diagram and Typical Application Circuit (Figure 1 for MAX1480EA/
MAX1480EC, Figure 2 for MAX1490EA/MAX1490EB).
Note 3: Shutdown supply current is the current at VCC1 and VCC2 when shutdown is enabled.
Note 4: Limit guaranteed by applying 1520VRMS for 1s. Test voltage is applied between all pins on one side of the package to all
pins on the other side of the package, e.g., between pins 1–14 and pins 15–28 on the 28-pin package.
Note 5: Applies to peak current (see Typical Operating Characteristics). Although the MAX1480EA/MAX1480EC and
MAX1490EA/MAX1490EB provide electrical isolation between logic ground and signal paths, they do not provide isolation
between external shields and the signal paths (see Isolated Common Connection section).
SWITCHING CHARACTERISTICS—MAX1480EA/MAX1490EA (continued)
(VCC_ = +5V ±10%, VFS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = +5V and TA = +25°C.)
tZH(SHDN)
315
Figures 6 and 9, CL = 100pF, S2 closed
Shutdown to Driver Output High
tZH(SHDN)
315
s
Figures 6 and 9, CL = 100pF, S1 closed
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
Shutdown to Driver Output Low
s
tPLH
1.4
3.0
Figures 5 and 7, RDIFF = 54
, CL1 = CL2 = 100pF
Driver Input to Output
Propagation Delay
tPHL
1.1
3.0
s
Figures 5 and 7, RDIFF = 54
, CL1 = CL2 = 100pF
Driver Disable Time from High
(MAX1480EC Only)
tHZ
1.7
4.5
s
Figures 6 and 8, CL = 15pF, S2 closed
Driver Disable Time from Low
(MAX1480EC Only)
tLZ
2.0
4.5
s
Figures 6 and 8, CL = 15pF, S1 closed
Driver Enable to Output Low
(MAX1480EC Only)
tZL
1.4
4.5
s
Figures 6 and 8, CL = 100pF, S1 closed
Driver Enable to Output High
(MAX1480EC Only)
tZH
1.4
4.5
s
Figures 6 and 8, CL = 100pF, S2 closed
Time to Shutdown
tSHDN
100
s
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Driver Rise or Fall Time
tR, tF
1.0
2.0
s
|tPLH - tPHL| Differential
Receiver Skew
tSKD
200
ns
Receiver Input to Output
Propagation Delay
tPHL
1.1
3.0
s
Figures 5 and 10, RDIFF = 54
, CL1 = CL2 = 100pF
Maximum Data Rate
Figures 5 and 7, RDIFF = 54
, CL1 = CL2 = 100pF
fMAX
160
kbps
Shutdown to Driver Output Low
tSKEW, tSKD
≤ 25% of data period
tZL(SHDN)
tPLH
0.9
3.0
315
Figures 5 and 10, RDIFF = 54
, CL1 = CL2 = 100pF
s
Figures 6 and 9, CL = 100pF, S1 closed
Shutdown to Driver Output High
tZH(SHDN)
315
s
Figures 6 and 9, CL = 100pF, S2 closed
Driver Output Skew
CONDITIONS
tSKEW
300
1200
ns
Figures 5 and 7, RDIFF = 54
, CL1 = CL2 = 100pF
tSKD
30
150
Figures 5 and 10, RDIFF = 54
, CL1 = CL2 = 100pF
|tPLH - tPHL| Differential
Receiver Skew
ns
SWITCHING CHARACTERISTICS—MAX1480EC/MAX1490EB
(VCC_ = +5V ±10%, VFS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = +5V and TA = +25°C.)
tSHDN
100
Time to Shutdown
s
fMAX
2.5
tSKEW, tSKD, tPHL
≤ 25% of data period
Maximum Data Rate
Mbps
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