XRT4500 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT4500' PDF : 96 Pages View PDF
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ELECTRICAL CHARACTERISTICS
Supply Voltage
Vpp +12V Supply
Vss
MIN
TYP
11
12
-5.7
-6.0
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.5
MAX
13
-6.3
UNITS
TEST CONDITIONS
V Full Load on V.28
V Full Load on V.28
IDD in DCE Mode- Ta=25°C, VDD=5V, Data and Clock at maximum operating frequencies unless other-
wise specified
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
V.10
M0=0, M1=0, M2=0
145
160
190
160
180
215
180
200
240
mA No Load or Signal, Tx Digital Inputs tied High
Typical Load at 10 kHz
Typical Load at 50 kHz
EIA-530-A (V.11)
M0=1, M1=0, M2=0
125
140
170
205
230
275
230
255
305
275
305
365
mA No Load or Signal, Tx Digital Inputs tied High
Typical Load at 1 MHz
Typical Load at 4 MHz
Typical Load at 10 MHz
EIA-530, RS449, V.36
120
135
160
M0=0, M1=1, M2=0
195
215
260
225
250
300
270
300
360
mA No Load or Signal, Tx Digital Inputs tied High
Typical Load at 1 MHz
Typical Load at 4 MHz
Typical Load at 10 MHz
X.21
M0=1, M1=1, M2=0
115
130
155
195
215
260
215
240
290
260
290
350
mA No Load or Signal, Tx Digital Inputs tied High
Typical Load at 1 MHz
Typical Load at 4 MHz
Typical Load at 10 MHz
V.35
M0=0, M1=0, M2=1
215
240
290
255
285
340
265
295
355
290
320
385
mA No Load or Signal, TX Digital Inputs tied High
Typical Load at 1 MHz
Typical Load at 4 MHz
Typical Load at 10 MHz
RESERVED
M0=1, M1=0, M2=1
120
135
160
200
225
270
225
250
300
270
300
360
mA No Load or Signal, Tx Digital Inputs tied High
Typical Load at 1 MHz
Typical Load at 4 MHz
Typical Load at 10 MHz
RS-232 (V.28)
M0=0, M1=1, M2=1
115
130
155
215
240
290
225
250
300
mA No Load or Signal, Tx Digital Inputs tied High
Typical Load at 10 kHz
Typical Load at 100 kHz
POWER DOWN
80
90
110
mA Reduced Power Mode
M0=1, M1=1, M2=1
NOTES:
1. Absolute Maximum Ratings are those beyond
which the safety of a device may be impaired.
2. All currents into device pins are positive; all cur-
rents out of device are negative. All voltages are
referenced to device ground unless otherwise
specified.
3. The efficiency of the switching regulator and the
charge pump is approximately 70%. The actual
power dissipation of the XRT4500 at 5V, with maxi-
mum loading, is 660mW in V.10, 700mW in V.11,
950mW in V.35 and 800mW in the V.28 mode. In
the “Reduced Power Mode” the XRT4500 chip dis-
sipation is 310mW.
4. "Typical Load" is the corresponding receiver in
another XRT4500 operating in the DTE mode.
5. A 50% duty cycle square wave, at the specified fre-
quency in the table, is applied to all Clock and Data
lines of the High Speed Transmitters).
6. A 10 KHz 50% duty cycle square wave is applied to
all Handshake Lines (Low Speed Transmitters).
26
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