EL4421CN Elantec Semiconductor, Inc. (acquired by Intersil), EL4421CN Datasheet - Page 10

• Manufacturer Part Number: EL4421CN
• Description: Multiplexed-input Video Amplifier
• Manufacturer: Elantec Semiconductor, Inc. (acquired by Intersil)

Applications Information
Switching Characteristics
The logic inputs work with standard TTL levels
of 0 8V or less for a logic 0 and 2 0V or more for a
logic 1 making them compatible for TTL and
The ground pin draws a maximum DC current of
6
(V
may range from (V
ditionally required to be no more negative than
EL4421C 22C 41C 42C 43C 44C
Multiplexed-Input Video Amplifiers
b
A and may be biased anywhere between
)
a
2 5V and (V
Figure 2 Using the EL44XX Mux Amps with
b
a
)
a
)
b
2 5V to V
3 5V The logic inputs
Figure 1 Simplified Logic Input Circuitry
a
and are ad-
Contd
10
CMOS drivers The ground pin is the logic
threshold biasing reference The simplified input
circuitry is shown below
V(Gnd pin)
V(Gnd pin)
For example within these constraints we can
power the EL44XX’s from
out a negative supply by using these connections
a
5V and
a
b
6V
4V and no more positive than
a
12V Supplies
a
5V and
4421 – 35
4421 – 36
a
12V with-