MC74LCX245 ON Semiconductor, MC74LCX245 Datasheet - Page 5

• Manufacturer Part Number: MC74LCX245
• Description: Low-Voltage CMOS Octal Transistor
• Manufacturer: ON Semiconductor

4. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
CAPACITIVE CHARACTERISTICS
DYNAMIC SWITCHING CHARACTERISTICS
An, Bn
Bn, An
V OLP
V OLV
C IN
C I/O
C PD
Symbol
Symbol
measured in the LOW state.
t R = t F = 2.5 ns, 10% to 90%; f = 1 MHz; t W = 500 ns
Dynamic LOW Peak Voltage
(Note 4.)
Dynamic LOW Valley Voltage
(Note 4.)
Input Capacitance
Input/Output Capacitance
Power Dissipation Capacitance
t PLH
WAVEFORM 1 – PROPAGATION DELAYS
Vmi
Vmo
Characteristic
Parameter
Symbol
Vmi
Vmo
V HZ
V LZ
Vmi
V CC = 3.3 V, C L = 50 pF, V IH = 3.3 V, V IL = 0 V
V CC = 2.5 V, C L = 30 pF, V IH = 2.5 V, V IL = 0 V
V CC = 3.3 V, C L = 50 pF, V IH = 3.3 V, V IL = 0 V
V CC = 2.5 V, C L = 30 pF, V IH = 2.5 V, V IL = 0 V
Vmo
t PHL
3.3 V
V OH – 0.3 V
V OL + 0.3 V
10 MHz, V CC = 3.3 V, V I = 0 V or V CC
Figure 3. AC Waveforms
1.5 V
1.5 V
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MC74LCX245
0.3 V
V CC = 3.3 V, V I = 0 V or V CC
V CC = 3.3 V, V I = 0 V or V CC
V CC
0 V
V OH
V OL
5
Condition
V OH – 0.3 V
V OL + 0.3 V
Condition
OE, T/R
V CC
2.7 V
1.5 V
1.5 V
An, Bn
An, Bn
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
t R = t F = 2.5 ns, 10% to 90%; f = 1 MHz; t W = 500 ns
t PZH
t PZL
2.5 V
V OL + 0.15 V
V OH – 015 V
V CC /2
V CC /2
Vmi
0.2 V
Vmo
Vmo
Min
t PHZ
t PLZ
Typical
T A = +25 C
25
7
8
–0.8
–0.6
Typ
0.8
0.6
Vmi
Max
Unit
pF
pF
pF
V CC
0 V
V OH
V HZ
V LZ
V OL
Unit
V
V
V
V