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參數(shù)資料
| 型號(hào)： | ST485BD |
| 英文描述： | IC MAX 7000 CPLD 64 100-TQFP |
| 中文描述： | 線收發(fā)器| 1驅(qū)動(dòng)器| 1 RCVR |?？苵 8引腳|塑料 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 92K |
| 代理商： | ST485BD |
ST485
3/12
DC ELECTRICAL CHARACTERISTICS
(VCC =5V ± 5%, TA =TMIN to TMAX , unless otherwise specified. Typical values are referred to TA =25°C)
(See Note 1)
Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground
unless specified.
Note 2: Supply current specification is valid for loaded transmitters when VDE =0V
Note 3: Applies to peak current. See typical Operating Characteristics.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VOD1
Differential Driver Output
(No Load)
5V
VOD2
Differential Driver Output
(With Load)
RL =27 (RS-485) (See Fig. 1)
RL =50 (RS-422) (See Fig. 1)
1.5
5
V
OD
Change in Magnitude of
Driver Differential Output
Voltage for Complementary
Output States
RL =27 or 50 (See Fig. 1)
0.2
V
VOC
Driver Common-Mode
Output Voltage
RL =27 or 50 (See Fig. 1)
3
V
OC
Change in Magnitude of
Driver Common-Mode
Output Voltage for
Complementary Output
States
RL =27 or 50 (See Fig. 1)
0.2
V
VIH
Input High Voltage
RE, DE, DI
2.0
V
VIL
Input Low Voltage
RE, DE, DI
0.8
V
IIN1
Input Current
RE, DE, DI
± 2
A
IIN2
Input Current (A, B)
VCM = 0V or 5.25V
VDE =0V
VIN = 12V
VIN = -7V
1
-0.8
mA
VTH
Receiver Differential
Threshold Voltage
VCM = -7 to 12V
-0.2
0.2
V
TH
Receiver Input Hysteresis
VCM =0V
70
mV
VOH
Receiver Output High
Voltage
IO = -4mA
VID = 200mV
3.5
V
VOL
Receiver Output Low
Voltage
IO =4mA
VID = -200mV
0.4
V
IOZR
3-State (High Impedance)
Output Current at Receiver
VO = 0.4 to 2.4V
± 1
A
RIN
Receiver Input Resistance
VCM = -7 to 12V
24
K
ICC
No Load Supply Current
(Note 2)
VRE =0V or VCC
VDE =VCC
VDE =0V
400
300
900
500
A
IOSD1
Driver Short-Circuit Current,
VO=High
VO = -7 to 12V (Note 3)
35
250
mA
IOSD2
Driver Short-Circuit Current,
VO=Low
VO = -7 to 12V (Note 3)
35
250
mA
IOSR
Receiver Short-Circuit
Current
VO =0V to VCC
795
mA
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相關(guān)代理商/技術(shù)參數(shù) |
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