74LVCU04A PHILIPS [NXP Semiconductors], 74LVCU04A Datasheet - Page 6

• Manufacturer Part Number: 74LVCU04A
• Description: Hex inverter
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
APPLICATION INFORMATION
Some applications for the 74LVU04 are:
Note to Figure 4
Z
3 kW < R1, R2 < 1 MW
Typical unity gain bandwidth product is 50 MHz.
A
A
1998 Jul 29
A
L
OL
u
u
Linear amplifier (see Figure 4)
In crystal oscillator designs (see Figure 5)
Astable multivibrator (see Figure 6)
Hex inverter
> 10 kW; A
= voltage amplification
+ –
= open loop amplification
1 )
1 mF
Figure 4. LVU04 used as a linear amplifier.
Note:
3 k < R1, R2 < 1 M
Typical unity gain bandwidth product is 5 MHz.
C
A
A
A u + –
Z
OL
R 1
R 2
l
OL
u
L
, see Figure10
= voltage amplification
> 10k ; A
R
A
= open loop amplification
= 20 (typical)
1
(1 ) A
OL
1 )
R 1
R 2
OL
A
OL
= 20 (typical)
(1 ) A
OL
)
V CC
R
; V
2
U04
OL
at
O Max (P
V
)
1
; V
CC
/
2
at
OMax(P*P)
V
V
1
– 1.5 V centered
CC
CC
/
2
–
V
– 1.5 V centered
CC
P)
SV00404
Z
GND
L
6
Note to Figure 5
C
C
R
R
against changes in V
Note to Figure 6
R
f + 1
1
2
1
2
S
optimum value depends on the frequency and required stability
= 47 pF (typ.)
= 22 pF (typ.)
= 1 to 10 MW (typ.)
T
Note:
C
C
R
R
changes in V
2 mA at V
2 x R
1
2
1
2
Figure 6. LVCU04 used as an astable multivibrator.
[
= 47 pF (typ.)
= 22 pF (typ.)
= 1 to 10 MW (typ.)
optimum value depends on the frequency and required stability against
R S
2.2 RC
The average I
3.5 + 0.05 x f (MHz) x C (pF) at V
Note:
R
f +
Figure 5. Crystal oscillator configuration.
S
CC
1
[ 2 x R
1
T
CC
= 3 V and f = 1 MHz).
[
2.2 RC
or average minimum I
R 1
U04
1
CC
CC
(mA) is approximately
U04
or average minimum I
out
R
CC
CC
R 2
(I
CC
= 3.0 V.
C 1
is typically
74LVCU04A
CC
U04
Product specification
.
SV00406
SV00408
C
C
2