IDT82V3380A Integrated Device Technology, IDT82V3380A Datasheet - Page 161

• Manufacturer Part Number: IDT82V3380A
• Description: Synchronous Ethernet Idt Wan Plltm Idt82v3380a
• Manufacturer: Integrated Device Technology

9.3.3.3
tial input with a single-ended signal.
Electrical Specifications
IDT82V3380A
This is a recommended and tested interface circuit to drive differen-
Vth = VCC*[R2/(R1+R2)]
For the example in
The suggested single-ended signal input:
V
V
V
DC offset (Swing Center) = Vth/2 +/- V
IHmax
ILmin
swing
= 0 V
= 0.6 V ~ VCC
= VCC
Single-Ended Input for Differential Input
VCC = 3.3 V
Figure
Driver_LVCMOS
Ro ~ 7 Ω
Figure 39. Example of Single-Ended Signal to Drive Differential Input
39, R1 = R2, so Vth = VCC/2 =1.65 V
Ro + Rs = Zo
swing
Rs
*10%
43
Zo = 50 Ω
100 (Option)
100 (Option)
R4
R5
161
0.1 uF
C1
R1
1K
Vth
R2
1K
SYNCHRONOUS ETHERNET WAN PLL™
VCC = 3.3 V
+
-
Receiver
September 30, 2010