NE8392C NXP Semiconductors, NE8392C Datasheet - Page 2

• Manufacturer Part Number: NE8392C
• Description: Coaxial Transceiver Interface For Ethernet/thin Ethernet
• Manufacturer: NXP Semiconductors

1. 100% measured in production.
2. The junction temperature is calculated from the following expression:
Philips Semiconductors
PIN DESCRIPTIONS
NOTE:
1. The IEEE 802.3 name for CD is CI; for RX is DI; for TX is DO.
ABSOLUTE MAXIMUM RATINGS
NOTE:
1995 May 1
PIN NO.
Coaxial transceiver interface for Ethernet/Thin Ethernet
N PKG
where
The N package is specially designed to have a low
These four pins then provide a conductive heat flow path from the die to the PCB where they should be soldered to a large area V
the A package, Pins 5 to 11 and 19 to 25 should similarly be soldered to a large area V
SYMBOL
T
12
14
15
16
10
13
11
T
1
2
3
6
7
8
9
4
5
V
SOLD
V
STG
T
EE
JA
IN
T
T
V
n
R
J
A
JA
J
EE
= T
= Ambient temperature in C.
= Thermal resistance of package.
= Normal operating supply voltage in volts.
= Percentage transmitter duty cycle.
= Pull down resistors on the RX and CD pins in .
A
PIN NO.
20 to 25
+
5 to 11
PLCC
Supply voltage
Voltage at any input
Storage temperature range
Lead soldering temperature (10sec.)
Recommended max junction temperature
Thermal impedance (N and A packages)
12
13
14
15
18
19
26
28
16
17
2
3
4
1
JA
[V
EE
(0.08 + n x 0.05/100) + 8(V
SYMBOL
GND
CD+
CD–
HBE
RR+
RR–
TXO
CDS
RX+
RX–
TX+
TX–
V
RXI
1
EE
1
Collision Outputs. Balanced differential line driver outputs which send a 10MHz oscillation signal to
the DTE in the event of a collision, jabber interrupt or heartbeat test.
Receiver Outputs. Balanced differential line driver outputs which send the received signal to the
DTE.
Transmitter Inputs. Balanced differential line receiver inputs which accept the transmission signal
from the DTE and apply it to the coaxial cable at TXO once it meets Tx squelch threshold.
Heartbeat Enable. The heartbeat function is disabled when this pin is connected to V
when connected to GND or left floating.
External Resistor. A 1k (1%) resistor connected between these pins establishes the signaling
current at TXO. RR– is internally connected to V
Receiver Input. This pin is connected directly to the coaxial cable. Received signals are equalized,
amplified, and sent to the DTE through the RX+ pins once it meets Rx squelch threshold.
Transmitter Output. This pin is connected directly (Thin Ethernet) or through an external isolating
diode (Ethernet) to the coaxial cable.
Collision Detect Sense. Ground sense connection for the collision detection circuitry. This pin
should be directly connected to the coaxial cable shield to prevent ground drops affecting the
collision threshold voltage.
Positive Supply Pin.
Negative supply pins. These pins also serve as a low thermal resistance path for extracting heat
from the die. They should, therefore, be connected to a large metal area on the PC board.
PARAMETER
EE
JA
–2) / R]
by directly connecting the four center Pins 4, 5, 12, and 13 to the die attachment area.
2
2
DESCRIPTION
EE
EE
and rack.
.
–65 to +150
RATING
0 to –12
+300
+130
–12
60
Product specification
NE8392C
EE
and enabled
EE
track. For
UNIT
C/W
V
V
C
C
C