參數(shù)資料
型號(hào): AM79C981JC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: Integrated Multiport Repeater Plus⑩ (IMR+⑩)
中文描述: DATACOM, ETHERNET TRANSCEIVER, PQCC84
封裝: PLASTIC, LCC-84
文件頁數(shù): 26/40頁
文件大?。?/td> 347K
代理商: AM79C981JC
AMD
PRELIMINARY
1–96
Am79C981
DC CHARACTERISTICS (continued)
Parameter
Symbol
Parameter Description
Test Conditions
Min
Max
Unit
Twisted Pair Ports
I
IRXD
Input current at RXD+/-
AV
SS
<V
IN
<AV
DD
–500
+500
μ
A
R
RXD
RXD differential input resistance
(Note 1)
10
K
V
TIVB
RXD+,RXD- open circuit input
voltage (bias)
I
IN
= 0 mA
AV
DD
–3.0
AV
DD
–1.5
V
V
TID
Differential Mode input voltage
range (RXD)
AV
DD
= 5.0 V
–3.1
+3.1
V
V
TSQ+
RXD positive squelch threshold
(peak)
Sinusoid 5 MHz <f< 10 MHz
300
520
mV
V
TSQ-
RXD negative squelch threshold
(peak)
Sinusoid 5 MHz <f< 10 MHz
–520
–300
mV
V
THS+
RXD post-squelch positive threshold
(peak)
Sinusoid 5 MHz <f< 10 MHz
150
293
mV
V
THS-
RXD post-squelch negative threshold
(peak)
Sinusoid 5 MHz <f< 10 MHz
–293
–150
mV
V
RXDTH
RXD switching threshold
(Note 1)
–60
+60
mV
V
TXH
TXD+/- and TXP+/- output
HIGH voltage
DV
SS
= 0 V
(Note 2)
DV
DD
–0.6
DV
DD
V
V
TXL
TXD+/- and TXP+/- output
LOW voltage
DV
DD
= 5 V
(Note 2)
DV
SS
DV
SS
+0.6
V
V
TXI
TXD+/- and TXP+/- differential
output voltage imbalance
–40
+40
mV
V
TXOFF
TXD+/- and TXP+/- differential
idle output voltage
DV
DD
= 5 V
40
mV
R
TXD
TXD+/- differential driver
output impedance
(Note 1)
40
R
TXP
TXP+/- differential driver
output impedance
(Note 1)
80
Power Supply Current
I
DD
Power supply current (idle)
f
X1
= 20 MHz
180
mA
Power supply current (transmitting
– no TP load)
f
X1
= 20 MHz
300
mA
Power supply current (transmitting
– with TP load)
f
X1
= 20 MHz
(Note 8)
mA
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