參數(shù)資料
型號: SN72HVD3082E
廠商: Texas Instruments, Inc.
英文描述: LOW POWER RS 485 TRANSCEIVER
中文描述: 低功耗RS 485 TRANSCEIVE?
文件頁數(shù): 5/19頁
文件大小: 369K
代理商: SN72HVD3082E
SLLS562C MARCH 2003 REVISED JUNE 2004
www.ti.com
5
RECEIVER ELECTRICAL CHARACTERISTICS
over recommended operating conditions unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
(1)
85
MAX
10
UNIT
mV
VIT+
VIT
Vhys
VOH
VOL
IOZ
Positive-going input threshold voltage
IO = 8 mA
IO = 8 mA
Negative-going input threshold voltage
200
115
mV
Hysteresis voltage (VIT+ VIT)
High-level output voltage
30
mV
VID = 200 mV, IOH = 8 mA, See Figure 8
VID = 200 mV, IOH = 8 mA, See Figure 8
VO = 0 to VCC, RE= VCC
VIH = 12 V, VCC = 5 V
VIH = 12 V, VCC = 0
VIH = 7 V, VCC = 5 V
VIH = 7 V, VCC = 0
VIH = 2 V
VIL = 0.8 V
VI = 0.4 sin (4E
t) + 0.5 V, DE at 0 V
4
4.6
V
Low-level output voltage
0.15
0.4
V
μ
A
High-impedance-state output current
1
1
0.04
0.1
II
Bus input current
0.06
0.125
mA
0.1
0.04
0.05
0.03
IIH
IIL
Cdiff
(1)All typical values are at 25
°
C and with a 5-V supply.
High-level input current (RE)
60
30
μ
A
μ
A
pF
Low-level input current (RE)
60
30
Differential input capacitance
7
RECEIVER SWITCHING CHARACTERISTICS
over recommended operating conditions unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Propagation delay time, low-to-high-level output
HVD3082E
HVD3085E
75
200
ns
HVD3088E
100
tPHL
Propagation delay time, high-to-low-level output
RL = 54
,
CL = 15 pF,
See Figure 9
HVD3082E
HVD3085E
79
200
ns
HVD3088E
100
tsk(p)
Pulse skew ( |tPHL tPLH| )
HVD3082E
HVD3085E
4
30
ns
HVD3088E
10
tr
tf
Output signal rise time
VID = 1.5 V to 1.5 V,
CL = 15 pF, See Figure 9
1.5
3
ns
Output signal fall time
1.8
3
ns
HVD3082E
HVD3085E
5
50
tPZH
Output enable time to high level
ns
HVD3088E
30
tPZL
Output enable time to low level
CL = 15 pF,
DE at 3 V,
and Figure 11
HVD3082E
HVD3085E
10
50
ns
HVD3088E
30
HVD3082E
HVD3085E
5
50
tPHZ
Output enable time from high level
See Figure 10
ns
HVD3088E
30
tPLZ
Output enable time from low level
HVD3082E
HVD3085E
8
50
ns
HVD3088E
30
tPZH(SHDN)
tPZL(SHDN)
Propagation delay time, shutdown-to-high-level output
CL = 15 pF, DE at 0 V,
See Figure 12
1600
3500
ns
Propagation delay time, shutdown-to-low-level output
1700
3500
ns
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