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Am79C940BKC датащи(PDF) 8 Page - Rochester Electronics

номер детали Am79C940BKC
подробное описание детали  Media Access Controller for Ethernet (MACE) 84-pin PLCC and 100-pin PQFP Packages
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производитель  ROCHESTER [Rochester Electronics]
домашняя страница  http://www.rocelec.com/
Logo ROCHESTER - Rochester Electronics

Am79C940BKC датащи(HTML) 8 Page - Rochester Electronics

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79C940
Specification Number 79C940B-CI (A) Rev C
Page 8 of 13
91
DC CHARACTERISTICS (Continued)
Parameter
Symbol
Parameter Description
Test Conditions
Min
Max
Unit
IAODOFF
Transmit Differential
Output Idle Current
RL = 78 Ω
–1
+1
mA
VAOCM
DO± Common Mode
Output Voltage
RL = 78 Ω
2.5
AVDD
V
VODI
DO± Differential Output
Voltage Imbalance
RL = 78 Ω (Note 6)
–25
25
mV
VATH
Receive Data Differential
Input Threshold
RL = 78 Ω (Note 6)
–35
35
mV
VASQ
DI± and CI± Differential
Input Threshold Squelch
RL = 78 Ω (Note 6)
–160
–275
mV
VIRDVD
DI± and CI± Differential
Mode Input Voltage Range
1.5
V
VICM
DI± and CI± Input Bias
Voltage
IIN= 0 mA
AVDD –3.0
AVDD –0.8
V
VOPD
DI± Undershoot Voltage at Zero
Differential on Transmit Return
to Zero (ETD)
(Note 5)
–100
mV
IDD
Power Supply Current
SCLK = 25 MHz
XTAL1 = 20 MHz
75
mA
IDDSLEEP
Power Supply Current
SLEEP Asserted, AWAKE = 0
RWAKE = 1 (Note 7)
100
µA
IDDSLEEP
Power Supply Current
SLEEP Asserted, AWAKE = 1
RWAKE = 0 (Note 7)
10
mA
IDDSLEEP
Power Supply Current
SLEEP Asserted, AWAKE = 0
RWAKE = 1 (Note 7)
20
mA
Twisted Pair Interface
IIRXD
Input Current at RXD±
AVSS< VIN < AVDD
–500
500
µA
RRXD
RXD± Differential Input
Resistance
(Note 8)
10
KΩ
VTIVB
RXD±, RXD– Open Circuit
Input Voltage (Bias)
IIN= 0 mA
AVDD –3.0
AVDD –1.5
V
VTIDV
Differential Mode Input
Voltage Range (RXD±)
AVDD= +5V
–3.1
+3.1
V
VTSQ+
RXD Positive Squelch
Threshold (Peak)
Sinusoid
5 MHz ≤ f ≤10 MHz
300
520
mV
VTSQ–
RXD Negative Squelch
Threshold (Peak)
Sinusoid
5 MHz ≤ f ≤10 MHz
–520
–300
mV
VTHS+
RXD Post-Squelch
Positive Threshold (Peak)
Sinusoid
5 MHz ≤ f ≤10 MHz
150
293
mV
VTHS–
RXD Post-Squelch
Negative Threshold) (Peak)
Sinusoid
5 MHz ≤ f ≤10 MHz
–293
–150
mV
VLTSQ+
RXD Positive Squelch
Threshold (Peak)
LRT = LOW
180
312
mV
VLTSQ–
RXD Negative Squelch
Threshold (Peak)
LRT = LOW
–312
–180
mV
VLTHS+
RXD Post-Squelch Positive
Threshold (Peak)
LRT = LOW
90
156
mV
TABLE 5
SPECIFICATION NUMBER: 79C940-CI (A) REV -
Page 8 of 13


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