CXB1582Q
3. Power supply
Power can be supplied to the CXB1582Q by either a single 3.3V power supply or a dual 3.3V/5V power supply.
When a TTL output high level of 2.2V is sufficient (for example, when only interfacing with a 3.3V CMOS), use
a single 3.3V power supply. When a TTL output high level of greater than 2.2V is required (for example, when
interfacing with a 5V TTL/CMOS), use a dual 3.3V/5V power supply.
VCCT5 VCCT3
VCCE VCCG
VCCP
3.3V
3mH
3mH
22µF 0.1µF
22µF 0.1µF
22µF 0.1µF
VEET
VEEE VEEG
(a) Single 3.3V power supply
VEEP1 VEEP2
VCCT5
VCCE VCCG
VCCP
5.0V
3mH
22µF 0.1µF
3.3V 22µF 0.1µF
22µF 0.1µF
VEET
VEEE VEEG
VEEP1 VEEP2
(b) Dual 3.3V/5V power supply
Fig. 3. Power Supply Circuits
– 19 –