74LVCU04APW View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
74LVCU04APW Datasheet PDF : 10 Pages
| |||
Philips Semiconductors
Hex inverter
APPLICATION INFORMATION
Some applications for the 74LVU04 are:
• Linear amplifier (see Figure 4)
• In crystal oscillator designs (see Figure 5)
• Astable multivibrator (see Figure 6)
1 mF R1
R2
VCC
U04
ZL
GND
Note:
ZL > 10kΩ; AOL = 20 (typical)
Au
+
–
AOL
1
)
R1
R2
(1 )
AOL
; VOMax(P*P)
)
≈
at
VCC – 1.5
1/2 VCC
V
centered
3 kΩ < R1, R2 < 1 MΩ
Typical unity gain bandwidth product is 5 MHz.
Cl, see Figure10
AOL = open loop amplification
Au = voltage amplification
SV00404
Figure 4. LVU04 used as a linear amplifier.
Note to Figure 4
ZL > 10 kW; AOL = 20 (typical)
Au +
–
1
)
AOL
R1
R2
(1 )
AOL)
; VO Max (P – P)
≈ VCC – 1.5 V centered
at 1/2 VCC
3 kW < R1, R2 < 1 MW
Typical unity gain bandwidth product is 50 MHz.
AOL = open loop amplification
Au = voltage amplification
Product specification
74LVCU04A
R1
R2
U04
C1
C2
out
Note:
C1 = 47 pF (typ.)
C2 = 22 pF (typ.)
R1 = 1 to 10 MW (typ.)
R2 optimum value depends on the frequency and required stability against
changes in VCC or average minimum ICC (ICC is typically
2 mA at VCC = 3 V and f = 1 MHz).
SV00408
Figure 5. Crystal oscillator configuration.
Note to Figure 5
C1 = 47 pF (typ.)
C2 = 22 pF (typ.)
R1 = 1 to 10 MW (typ.)
R2 optimum value depends on the frequency and required stability
against changes in VCC or average minimum ICC.
U04
U04
RS
R
C
Note:
f+1[ 1
T 2.2 RC
RS [ 2 x R
The average ICC (mA) is approximately
3.5 + 0.05 x f (MHz) x C (pF) at VCC = 3.0 V.
SV00406
Figure 6. LVCU04 used as an astable multivibrator.
Note to Figure 6
f
+
1
T
[
1
2.2 RC
RS ≈ 2 x R
1998 Jul 29
6
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