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NE83C92A Datasheet(PDF) 5 Page - NXP Semiconductors |
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NE83C92A Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 9 page Philips Semiconductors Product specification NE83C92 Low-power coaxial Ethernet transceiver 1995 May 1 5 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 3) First received bit on RX ± VRXI = –2V peak 3 5 bits First validly timed bit on RX ± tRON +2 bits tRD Receiver prop. delay RXI to RX ± VRXI = –2V peak 20 50 ns tRR Differential output rise time on RX ± and CD±2,3 5 7 ns tRF Differential output fall time on RX ± and CD±2,3 5 7 ns tOS Differential output settling time on RX ± and CD± to VOB = 40mV2 (see Figure 4) 1 µs tRJ Receiver and cable total jitter ±2 ±6 ns tRHI Receiver high to idle time Measured to +210mV 200 850 ns tRM Rise and fall time matching on RX+ and CD+ tRF – tRR 0.1 ±2 ns tTST Transmitter start-up delay TX ± to TXO (Figure 5) First transmitted bit on TXO VTX+ = –1V peak 1 2 bits First validly timed bit tTST + 2 bits tTD Transmitter prop delay TX ± to TXO (see Figure 5) VTX+ = 1V peak 5 20 50 ns tTR Transmitter rise time 10% to 90% (see Figure 5) 20 25 30 ns tTF Transmitter fall time 10% to 90% (see Figure 5) 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 5) VTX± = 1V peak 10 35 ns tTOFF Transmitter turn off pulse width (see Figure 5) VTX+ = 1V peak 125 200 ns tCON Collision turn on delay (see Figure 6) 0V to –2V step at RXI 13 bits tCOFF Collision turn off delay (see Figure 6) –2V to 0V step at RXI 16 bits tCHI Collision high to idle time (see Figure 6) Measured to +210mV 200 850 ns fCD Collision frequency (see Figure 6) 8.5 10 11.5 MHz tCP Collision signal pulse width (see Figure 6) 35 70 ns tHON Heartbeat turn on delay (see Figure 7) 0.6 1.6 µs tHW Heartbeat test duration (see Figure 7) 0.5 1.5 µs tJA Jabber activation delay measured from TX ± to CD ± (see Figure 8) 20 60 ms tJR Jabber reset delay measured from TX ± to CD± (see Figure 8) 250 650 ms NOTES: 1. All typicals are for VEE = –9V and TA = 27°C. 2. Measured on secondary side of isolation transformer (see Figure 2). The transformer has a 1:1 turn ratio with an inductance between 30 and 100 µH 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. |
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