參數(shù)資料
型號: AM79C985
廠商: Advanced Micro Devices, Inc.
英文描述: enhanced Integrated Multiport Repeater Plus (eIMR+⑩)
中文描述: 強化的綜合多端中繼器加(eIMR⑩)
文件頁數(shù): 36/48頁
文件大小: 260K
代理商: AM79C985
36
Am79C985
P R E L I M I N A R Y
DC CHARACTERISTICS (continued)
Notes:
1. Parameter not tested.
2. LED current not included. Maximum current rating on LED drivers is 12 mA.
Parameter
Symbol
Twisted Pair Ports (Continued)
RXD Positive Squelch Threshold
(peak)
RXD Negative Squelch Threshold
(peak)
RXD Post-Squelch Positive
Threshold (peak)
RXD Post-Squelch Negative
Threshold (peak)
RXD Positive Squelch Threshold
(peak) - Extended Distance Mode
RXD Negative Squelch Threshold
(peak) - Extended Distance Mode
RXD Post-Squelch Positive
Threshold - Extended Distance Mode
RXD Post-Squelch Negative
Threshold - Extended Distance Mode
V
RXDTH
RXD Switching Threshold
Power Supply Current
I
DD
Power Supply Current
(Idle) (Note 2)
Power Supply Current
(Transmitting)
Parameter Description
Test Conditions
Min
Max
Unit
V
TSQ+
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
Sinusoid
5 MHz<f<10 MHz
(Note 1)
300
520
mV
V
TSQ–
–520
–300
mV
V
THS+
150
293
mV
V
THS–
–293
–150
mV
V
LTSQ+
180
365
mV
V
LTSQ–
–365
–180
mV
V
LTHS+
90
175
mV
V
LTHS–
–175
–90
mV
–60
60
mV
CLK = 20 MHz
V
DD
= +5.25V
CLK = 20 MHz
V
DD
= +5.25V
100
mA
350
mA
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