Altera USB-Blaster II - Manual (Page 14)

2–4 Chapter 2: USB-Blaster II Download Cable Specifications
Operating Conditions
USB-Blaster II Download Cable October 2014 Altera Corporation
User Guide
1 Although a 10-pin surface mount header can be used for the download cable, Altera
recommends using a through-hole connector. Through-hole connectors hold up better
under the repeated insertion and removal.
Operating Conditions
The following tables summarize the maximum ratings, recommended operating
conditions, and DC operating conditions for the USB-Blaster II cable.
Table 2–3. USB-Blaster II Cable Absolute Maximum Ratings
Symbol Parameter Conditions Min Max Unit
V
CC(TRGT)
Target supply voltage With respect to
ground –0.5 6.5 V
V
CC(USB)
USB supply voltage With respect to
ground –0.5 6.0 V
I
I
Target side input current Pin 7 –100.0 100.0 mA
I
I(USB)
USB supply current VBUS — 200.0 mA
I
o
Target side output current Pins: 1, 5, 6, 8, 9 –50.0 50.0 mA
Table 2–4. USB-Blaster II Cable Recommended Operating Conditions
Symbol Parameter Conditions Min Max Unit
V
CC(TRGT)
Target supply voltage,
5.0-V operation — 4.75 5.25 V
Target supply voltage,
3.3-V operation — 3.0 3.6 V
Target supply voltage,
2.5-V operation — 2.375 2.625 V
Target supply voltage,
1.8-V operation — 1.71 1.89 V
Target supply voltage,
1.5-V operation — 1.43 1.57 V
Table 2–5. USB-Blaster II Cable DC Operating Conditions (Part 1 of 2)
Symbol Parameter Conditions Min Max Unit
V
IH
High-level input voltage V
CC(TRGT)
>= 2.0 V 0.7 x
V
CC(TRGT)
— V
V
CC(TRGT)
< 2.0 V 0.65 x
V
CC(TRGT)
— V
V
IL
Low-level input voltage V
CC(TRGT)
>= 2.0 V — 0.3 x
V
CC(TRGT)
V
V
CC(TRGT)
< 2.0 V — 0.2 x
V
CC(TRGT)
V