MC74VHCT259A_14 Datasheet, PDF (6/9 Pages) ON Semiconductor – 8-Bit Addressable Latch/1-of-8 Decoder CMOS Logic Level Shifter

MC74VHCT259A
TIMING REQUIREMENTS (Input t_r = t_f = 3.0ns)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Symbol
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _tw
Parameter
Minimum Pulse Width, Reset or Enable
(Figure 10)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{tsu Minimum Setup Time, Address or Data to Enable}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{(Figure 10)}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _th
Minimum Hold Time, Enable to Address or Data
(Figure 8 or 9)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{tr,tf MaximumInput,RiseandFallTimes}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^{(Figure 6)}
Test Conditions
V_CC = 3.3 ± 0.3V
V_CC = 5.0 ± 0.5V
V_CC = 3.3 ± 0.3V
V_CC = 5.0 ± 0.5V
V_CC = 3.3 ± 0.3V
V_CC = 5.0 ± 0.5V
V_CC = 3.3 ± 0.3V
V_CC = 5.0 ± 0.5V
T_A = 25°C
T_A = ≤ 85°C T_A = ≤ 125°C
Min Typ Max Min Max Min Max Unit
5.0
5.5
5.5
ns
5.0
5.5
5.5
4.5
4.5
4.5
ns
3.0
3.0
3.0
2.0
2.0
2.0
ns
2.0
2.0
2.0
400
300
300 ns
200
100
100
V_CC
t_r
DATA IN
50%
t_PLH
50%
OUTPUT Q
DATA IN
t_f
V_CC ADDRESS
SELECT
GND
t_PHL
OUTPUT Q
50%
50%
t_PHL
50%
GND
V_CC
GND
V_CC
GND
t_PHL
Figure 6. Switching Waveform
Figure 7. Switching Waveform
V_CC
V_CC
DATA IN
GND
DATA IN
GND
t_w
t_w
ENABLE
V_CC
RESET
t_w
V_CC
50%
50%
50%
50%
GND
GND
t_PHL
t_PHL
t_PHL
OUTPUT Q
OUTPUT Q
50%
Figure 8. Switching Waveform
Figure 9. Switching Waveform
DATA IN
OR
50%
ADDRESS
SELECT
t_su
t_h(H)
t_su
ENABLE
50%
Figure 10. Switching Waveform
V_CC
GND
t_h(H)
V_CC
GND
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 11. Test Circuit
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