參數(shù)資料
型號(hào)： XRT4500
廠(chǎng)商： Exar Corporation
英文描述： MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
中文描述： 多協(xié)議串行網(wǎng)絡(luò)接口芯片
文件頁(yè)數(shù)： 29/99頁(yè)
文件大?。?/td> 1384K
代理商： XRT4500
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
á
26
ELECTRICAL CHARACTERISTICS
N
OTES
:
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 V10, 700mW in V11,
950mW in V35 and 800mW in the V28 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).
Supply Voltage
M
IN
T
YP
M
AX
UNITS
T
EST
C
ONDITIONS
Vpp +12V Supply
11
12
13
V
Full Load on V.28
Vss
-5.7
-6.0
-6.3
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
P
ARAMETER
M
IN
T
YP
M
AX
UNITS
T
EST
C
ONDITIONS
V.10
M0=0, M1=0, M2=0
145
160
180
160
180
200
190
215
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
205
230
275
140
230
255
305
170
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
M0=0, M1=1, M2=0
120
195
225
270
135
215
250
300
160
260
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
195
215
260
130
215
240
290
155
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
255
265
290
240
285
295
320
290
340
355
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
200
225
270
135
225
250
300
160
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
215
225
130
240
250
155
290
300
mA
No Load or Signal, Tx Digital Inputs tied High
Typical Load at 10 kHz
Typical Load at 100 kHz
POWER DOWN
M0=1, M1=1, M2=1
80
90
110
mA
Reduced Power Mode
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