COM20019I-HT Standard Microsystems (SMSC), COM20019I-HT Datasheet - Page 62
COM20019I-HT
Manufacturer Part Number
COM20019I-HT
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.COM20019I-HT.pdf
(70 pages)
Specifications of COM20019I-HT
Number Of Transceivers
1
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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Rev. 11-07-08
(Internal Clk)
nPULSE2
nPULSE1
nTXEN
RXIN
Above values are for 312.5 Kbps.
Other Data Rates are shown below.
T
*t5, t6 = T
*t2, t7, t10 = T
*t3, t11 = T
**t9 =
**t13 =
DR
t13
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
is the Data Rate Period
4
7
Figure 8.13 - BACKPLANE MODE TRANSMIT OR RECEIVE TIMING
5
4
(These signals are to and from the differential driver or the cable)
x T
Beginning Last Bit Time to nTXEN High**
nPULSE2 High to nTXEN Low
nPULSE1 Pulse Width
nPULSE1 Period
nPULSE2 Low to nPULSE1 Low
nPULSE2 High Time
nPULSE2 Low Time
nPULSE2 Period
nPULSE2 High to nTXEN High
(First Rising Edge on nPULSE2 after Last Bit Time)
nTXEN Low to first nPULSE1 Low**
RXIN Active Pulse Width
RXIN Period
RXIN Inactive Pulse Width
x T
DR
t1
DR
DR
/4
DR
DR
+/- 100 nS
+/- 100 nS
/2
t9
t4
t10
Parameter
t11
t2
DATASHEET
t5
Page 62
t12
t7
Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
t3
t6
(3200 nS BIT TIME)
3900
5500
-25
min
-25
-25
10
20
LAST BIT
1600*
3200*
1600*
1600*
3200*
800*
800*
typ
t13
5700
max
4100
50
50
50
SMSC COM20019I 3.3V Rev.C
units
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
t8
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