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参数资料
| 型号： | SP3497EEN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 ESD 14NSOIC |
| 标准包装： | 2,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422/RS485 |
| 电源电压： | 3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC（窄型） |
| 包装： | 带卷 (TR) |
SP3495E-3497E
5
REV. 1.0.0
HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE
VIH
Logic Input Thresholds (DI, DE, RE)
2.0
V
Logic Input High
VIL
0.8
V
Logic Input Low
VHYS
Driver Input Hysteresis
100
mV
TA = 25°C
IIN
Logic Input Current (DI, DE and RE)10
uA
IN = 0V
-10
uA
IN = Vcc
Driver AC Characteristics
freq
Data Signaling Rate
32
Mbps
1/tUI, Duty Cycle 40 to 60%
tPLH
Driver Propagation Delay (low to
High)
511
24
ns
CL = 50pF, RL = 54,
freq = 8MHz, Figures 6 and 7
tPHL
Driver Propagation Delay (High to
Low)
511
24
ns
CL = 50pF, RL = 54,
freq = 8MHz, Figures 6 and 7
tR
Driver Rise Time
2.5
4.5
10
ns
CL = 50pF, RL = 54,
freq = 8MHz, Figures 6 and 7
tF
Driver Fall time
2.5
4.5
10
ns
CL = 50pF, RL = 54,
freq = 8MHz, Figures 6 and 7
|t
PLH-tPHL|
Differential Pulse Skew
3
ns
Figures 6 and 7
tOZH
Driver Enable to Output High
50
ns
CL = 50pF, RL = 500, Figures
8 and 9
tOZL
Driver Enable to Outut Low
50
ns
CL = 50pF, RL = 500, Figures
10 and 11
tOHZ
Driver Disable from Output High
50
ns
CL = 50pF, RL = 500, Figures
8 and 9
tOLZ
Driver Disable from Output Low
50
ns
CL = 50pF, RL = 500, Figures
10 and 11
tOZV
Shutdown to Driver Output Valid
6
us
CL = 50pF, RL = 500
tSHDN
Time to Shutdown
50
600
ns
Note 2 and 3
RECEIVER DC CHARACTERISTICS
IIN
Input Current (A, B pins)
-290
500
uA
DE = 0, Vcc = 0 or 3.3V
VA or VB = 12V, other input 0V
VA or VB = -7V, other input 0V
VIH
Receiver Differential Thresholds
(VA - VB)
-85
-40
mV
-7V
≤ V
CM ≤ 12V, rising
VIL
-200
-125
mV
-7V
≤ V
CM ≤ 12V, falling
Receiver Input Hysteresis
25
mV
VCM = 0V
VOH
Receiver Output Voltage High
2.4
V
IOUT = -8mA, VID = 200mV
VOL
Receiver Output Voltage Low
0.4
V
IOUT = 8mA, VID = -200mV
UNLESS OTHERWISE NOTED: VCC = +3.0V TO +3.6V WITH TA FROM -40
OC TO +85OC. TYPICAL VALUES ARE AT
VCC = +3.3V AND 25
OC.
SYMBOL
PARAMETERS
MIN.TYP.
MAX.UNITS
CONDITIONS
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