NE83Q93D View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
NE83Q93D Datasheet PDF : 11 Pages
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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
Receiver start up delay RXI to RX± (Figure 4)
First received bit on RX±
First validly timed bit on RX±
VRXI = –2V peak
tRD
Receiver prop. delay RXI to RX±
VRXI = –2V peak
tRR
Differential output rise time on RX± and CD±2,3
tRF
Differential output fall time on RX± and C±2,3
tOS
Differential output settling time on RX± and CD±
to VOB = 40mV2 (see Figure 5)
tRJ
Receiver and cable total jitter
tRHI
Receiver high to idle time
Measured to +210mV
200
tRM
Rise and fall time matching on RX+ and CD+
tRF – tRR
tTST
Transmitter start–up delay TX± to TXO (Fig. 6)
First transmitted bit on TXO
VTX+ = –1V peak
First validly timed bit
tTD
Transmitter prop delay TX± to TXO
(see Figure 6)
VTX+ = 1V peak
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
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