HDMP-1638 Datasheet, PDF (9/19 Pages) Agilent(Hewlett-Packard) – Gigabit Ethernet Transceiver Chip with Dual Serial I/O and Differential PECL Clock Inputs

9
HDMP-1638 (TRx)
AC Electrical Specifications
T_A = 0 °C to +70 °C, V_CC = 3.15 V to 3.45 V
Symbol
Parameter
t_r,TTLin
Input TTL Rise Time, 0.8 to 2.0 Volts
t_f,TTLin
Input TTL Fall Time, 2.0 to 0.8 Volts
t_r,TTLout
Output TTL Rise Time, 0.8 to 2.0 Volts, 10 pF Load
t_f,TTLout
Output TTL Fall Time, 2.0 to 0.8 Volts, 10 pF Load
t_{rs,HS_OUT} HS_OUT Single-Ended (+DOUT) Rise Time
t_{fs,HS_OUT} HS_OUT Single-Ended (+DOUT) Fall Time
t_{rd,HS_OUT} HS_OUT Differential Rise Time
t_{fd,HS_OUT} HS_OUT Differential Fall Time
V_{IP,HS_IN} HS_IN Input Peak-To-Peak Differential Voltage
V_{OP,HS_OUT[1]} HS_OUT Output Pk-Pk Diff. Voltage (Z0=50 Ω, Fig. 10)
Note: 1.Output Peak-to-Peak Differential Voltage specified as DOUT+ minus DOUT-.
Units Min. Typ. Max.
nsec
2
nsec
2
nsec
1.5 2.4
nsec
1.1 2.4
psec 85 225 327
psec 85 200 327
psec 85
327
psec 85
327
mV 200 1200 2000
mV 1200 1600 2200
22.0680 ns
A. DIFFERENTIAL HS_OUT OUTPUT (DOUT+ MINUS DOUT–)
Yaxis = 400 mV/DIV
22.0680 ns
Yaxis = 200 mV/DIV
B. SINGLE-ENDED HS_OUT OUTPUT (DOUT+)
Eye Diagrams of the High-Speed Serial Outputs from the
HDMP-1638 as Captured on the 83480A Digital
Communications Analyzer. Tested with PRBS=2⁷-1.
Figure 7: Transmitter DOUT Eye Diagrams.