COM20020I3V-HT Standard Microsystems (SMSC), COM20020I3V-HT Datasheet - Page 58

• Manufacturer Part Number: COM20020I3V-HT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of COM20020I3V-HT

• Number Of Transceivers: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Compliant

Revision 12-06-06
XTAL1
Note*: Input clock frequency must be 20 MHz ( 100ppm or better) to use the internal Clock Multiplier.
nTXEN
nPULSE2
nPULSE1
t5
t1
t2
t3
t4
RXIN
Note: Use Only 2.5 Mbps
t1
t2
t3
t4
t5
t6
t7
t8
t
5
4.0V
is applied to crystal oscillaton.
Input Clock High Time
Input Clock Low Time
Input Clock Period
Input Clock Frequency
Frequency Accuracy*
nPULSE1, nPULSE2 Pulse Width
nPULSE1, nPULSE2 Period
nPULSE1, nPULSE2 Overlap
Beginning of Last Bit Time to nTXEN High
RXIN Active Pulse Width
nTXEN Low to nPULSE1 Low
RXIN Period
RXIN Inactive Pulse Width
FIGURE 22 – BACKPLANE MODE TRANSMIT OR RECEIVE TIMING
(These signals are to and from the differential driver or the cable)
FIGURE 21 – NORMAL MODE TRANSMIT OR RECEIVE TIMING
t4
Parameter
t1
t6
Parameter
t1
(These signals are to and from the hybrid)
1.0V
t3
DATASHEET
t2
t1
+ -
t7
t2
58
t8
5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
-200
min
t2
10
10
25
10
t3
min
850
250
-10
10
20
typ
100
400
400
100
typ
0
(400 nS BIT TIME)
100
max
200
40
LAST BIT
max
t5
+10
950
350
50% of V
units
MHz
ppm
nS
nS
nS
SMSC COM20020I 3.3V
units
nS
nS
nS
nS
nS
nS
nS
nS
DD