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PDF NE83Q93 Data sheet ( Hoja de datos )
| Número de pieza | NE83Q93 | |
| Descripción | Enhanced coaxial Ethernet transceiver | |
| Fabricantes | Philipss | |
| Logotipo |  |
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Philips Semiconductors
Enhanced coaxial Ethernet transceiver
Product specification
NE83Q93
DESCRIPTION
The NE83Q93 is a low power coaxial transceiver interface (CTI) for
Ethernet (10base5) and Thin Ethernet (10base2) local area
networks. The CTI is connected between the coaxial cable and the
Data Terminal Equipment (DTE) and consists of a receiver,
transmitter, receive-mode collision detector, heartbeat generator and
jabber timer (see Block Diagram). The transmitter output connects
directly to a doubly terminated 50Ω cable, while the receiver output,
collision detector output and transmitter input are connected to the
DTE through isolation transformers. Isolation between the CTI and
the DTE is an IEEE 802.3 requirement that can be met on signal
lines by using a set of pulse transformers. Power isolation for the
CTI is achieved using DC-to-DC conversion through a power
transformer (see Figure 1, Connection Diagram).
The part is functionally the same as the NE83Q92, but with
additional features such as a transmit enable input, a carrier detect
output and five status LED driver outputs.
The NE83Q93 is manufactured on an advanced BiCMOS process
and is available in an SOL package making it ideally suited to
lap-top personal computers or systems where low power
consumption, limited board space and jumperless design is
required. Refer to selection flow chart for optimal application.
PIN CONFIGURATION
D, N Packages
CD+ 1
CD– 2
RX+ 3
VEE
VEE
RX–
4
5
6
TX+ 7
TX– 8
TEN 9
XLED 10
JLED 11
LCOM 12
24 CDS
23 TXO
22 RXI
21 VEE
20 RR–
19 RR+
18 GND
17 HBE
16 CRS
15 RLED
14 LINK
13 CLED
SD00311
FEATURES
• Fully compliant with Ethernet II, IEEE 802.3 10BASE-5 and
10BASE-2, and ISO 8802/3 interface specifications
• Functionally compatible with industry standard 8392 applications
• Optimal implementation can use 1 Watt DC-DC converter and
reduces external parts count
• High efficiency AUI drivers minimize current consumption under
idle conditions by automatically powering-down
• Automatically disables AUI drivers when disconnecting coax
cable, allowing hard-wiring of AUI connector and local/integrated
CTI connection
ORDERING INFORMATION
DESCRIPTION
24-Pin Plastic Dual In-Line Package (DIP)
24-Pin Plastic Small Outline Large (SOL) Package
• Smart squelch on data inputs eliminates false activations
• Transmit enable input and carrier sense output for repeater
applications
• Five LED status drivers for transmit, receive, collision, jabber and
link fail indication
• Advanced BiCMOS process for extremely low power operation
• Available in 24-pin DIP and 24-pin SOL packages
• Full ESD protection
• Power-on reset prevents glitches on coaxial cable
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
ORDER CODE
NE83Q93N
NE83Q93D
DWG #
0410D
SOT137-1
1995 May 1
1 853-1738 15180
1 page  
Philips Semiconductors
Enhanced coaxial Ethernet transceiver
Product specification
NE83Q93
TIMING CHARACTERISTICS
VEE = –9V +6%; TA = 0 to 70°C, unless otherwise specified1. No external isolation diode on TXO.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tRON
tRD
tRR
tRF
tOS
tRJ
tRHI
tRM
tTST
tTD
Receiver start up delay RXI to RX± (Figure 4)
First received bit on RX±
First validly timed bit on RX±
Receiver prop. delay RXI to RX±
Differential output rise time on RX± and CD±2,3
Differential output fall time on RX± and C±2,3
Differential output settling time on RX± and CD±
to VOB = 40mV2 (see Figure 5)
Receiver and cable total jitter
Receiver high to idle time
Rise and fall time matching on RX+ and CD+
Transmitter start–up delay TX± to TXO (Fig. 6)
First transmitted bit on TXO
First validly timed bit
Transmitter prop delay TX± to TXO
(see Figure 6)
VRXI = –2V peak
VRXI = –2V peak
Measured to +210mV
tRF – tRR
VTX+ = –1V peak
VTX+ = 1V peak
200
5
3 5 bits
tRON +2
bits
20 50 ns
5 7 ns
5 7 ns
1 µs
±2 ±6 ns
850 ns
0.1 ±2 ns
1 2 bits
tTST + 2
bits
20 50 ns
tTR Transmitter rise time 10% to 90% (see Figure 6)
20 25 30 ns
tTF Transmitter fall time 10% to 90% (see Figure 6)
20 25 30 ns
tTM tTF – tTR mismatch5
0 ±2 ns
tTS Transmitter added skew4,5
0 ±2 ns
tTON
Transmitter turn on pulse width (see Figure 6)
VTX± = 1V peak
10
35 ns
tTOFF
Transmitter turn off pulse width (see Figure 6)
VTX+ = 1V peak
125
200 ns
tCON
Collision turn on delay (see Figure 7)
0V to –2V step at RXI
13 bits
tCOFF
Collision turn off delay (see Figure 7)
–2V to 0V step at RXI
16 bits
tCHI Collision high to idle time (see Figure 7)
Measured to +210mV
200
850 ns
fCD Collision frequency (see Figure 7)
8.5 10 11.5 MHz
tCP Collision signal pulse width (see Figure 7)
35 70 ns
tHON
Heartbeat turn on delay (see Figure 8)
0.6 1.6 µs
tHW Heartbeat test duration (see Figure 8)
0.5 1.5 µs
tJA
Jabber activation delay measured from TX± to
CD± (see Figure 9)
20 60 ms
tJR
Jabber reset delay measured from TX± to CD±
(see Figure 9)
250 650 ms
LEDs
tLED
tXLEDON
tXLEDOFF
tRLEDON
tRLEDOFF
tCLEDON
tJLEDON
tJLEDOFF
Turn-on or turn-off delay of LEDs
XLED maximum on time
XLED minimum off time
RLED maximum on time
RLED minimum off time
CLED minimum on time
JLED maximum on time
JLED minimum off time
10 µs
90 115 135 ms
5 7 10 ms
90 115 135 ms
5 10 ms
10 14 18 ms
NOTES:
1. All typicals are for VEE = –9V and TA = 27°C.
2. Measured on secondary side of isolation transformer (see Figures 1 and 2, Connection Diagram). The transformer has a 1:1 turn ratio with
an inductance between 30 and 100µH at 5MHz.
3. The rise and fall times are measured as the time required for the differential voltage to change from –225mV to +225mV, or +225mV to
–225mV, respectively.
4. Difference in propagation delay between rising and falling edges at TXO.
5. Not 100% tested in production.
1995 May 1
5
5 Page 
Philips Semiconductors
Enhanced coaxial Ethernet transceiver
Product specification
NE83Q93
TX+
TXO
CD+
tJA
tJR
Figure 9. Jabber Timing
TX,
RX
XLED, (LCOM)
RLED (VEE)
TXLEDON
TRLEDON
TXLEDOFF
TRLEDOFF
CD
(COLLISION)
CLED
(LCOM)
(VEE)
TCLEDON
TCLEDON
CD
(JABBER ON)
JLED
(LCOM)
(VEE)
JABBER
LED ON
TCLEDON
COAX
LINK
(LED)
(LCOM)
(VEE)
LINE
DISCONNECTED
LINK
LED OFF
RX
CRS
(LCOM)
(VEE)
Figure 10. LED Timing
SD00282
SD00510
1995 May 1
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet NE83Q93.PDF ] | |
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