參數(shù)資料
型號(hào): 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): 6/19頁
文件大?。?/td> 369K
代理商: SN72HVD3082E
SLLS562C MARCH 2003 REVISED JUNE 2004
www.ti.com
6
PARAMETER MEASUREMENT INFORMATION
NOTE:
Test load capacitance includes probe and jig capacitance (unless otherwise specified). Signal generator characteristics: rise and
fall time < 6 ns, pulse rate 100 kHz, 50% duty cycle. ZO = 50
(unless otherwise specified).
II
IOA
IOB
VOD
50 pF
27
27
VOC
0 V or 3 V
A
B
D
Figure 1. Driver Test Circuit, V
OD
and V
OC
Without Common-Mode Loading
VOD
60
VTEST
0 V or 3 V
375
375
VTEST = 7 V to 12 V
IOA
IOB
Figure 2. Driver Test Circuit, V
OD
With Common-Mode Loading
VOC
50
Signal
Generator
A
B
27
27
50 pF
D
VA
VB
VOC
VOC(PP)
VOC(SS)
3.25 V
1.75 V
Figure 3.
Driver V
OC
Test Circuit and Waveforms
VOD
50
RL = 54
CL = 50 pF
Signal
Generator
1.5 V
1.5 V
3 V
0 V
tPLH
tPHL
VOD(H)
VOD(L)
90%
0 V
10%
tr
tf
INPUT
OUTPUT
Figure 4. Driver Switching Test Circuit and Waveforms
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