74AHCT259PW データシートの表示（PDF） - Philips Electronics
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74AHCT259PW Datasheet PDF : 20 Pages
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Philips Semiconductors
8-bit addressable latch
Product specification
74AHC259;
74AHCT259
SYMBOL PARAMETER
TEST CONDITIONS
WAVEFORMS CL
Tamb (°C)
25
−40 to +85 −40 to +125 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
VCC = 4.5 to 5.5 V; note 2
tPHL/tPLH propagation delay see Figs 5 and 11 15 pF −
4.1
D to Qn
propagation delay see Figs 6 and 11
An to Qn
− 5.3
propagation delay see Figs 7 and 11
LE to Qn
− 4.3
tPHL
propagation delay see Figs 8 and 11
MR to Qn
− 3.9
tPHL/tPLH propagation delay see Figs 5 and 11 50 pF −
5.3
D to Qn
propagation delay see Figs 6 and 11
An to Qn
− 6.5
propagation delay see Figs 7 and 11
LE to Qn
− 5.5
tPHL
propagation delay see Figs 8 and 11
MR to Qn
− 5.1
tW
LE pulse width see Figs 7 and 11
5.0 −
HIGH or LOW
MR pulse width
LOW
see Figs 8 and 11
5.0 −
tsu
set-up time
see Figs 9,
D to LE, An to LE 10 and 11
4.0 −
th
hold time D to LE, see Figs 9 and 11
1.0 −
An to LE
7.5 1.0 9.0 1.0
9.5 1.0 11.5 1.0
8.0 1.0 9.5 1.0
7.0 1.0 8.5 1.0
9.5 1.0 11.0 1.0
11.5 1.0 13.5 1.0
10.0 1.0 11.5 1.0
9.0 1.0 10.5 1.0
−
5.0 −
5.0
−
5.0 −
5.0
−
4.0 −
4.0
−
1.0 −
1.0
10.0 ns
12.5 ns
10.5 ns
9.5 ns
12.0 ns
15.0 ns
12.5 ns
11.5 ns
−
ns
−
ns
−
ns
−
ns
Notes
1. Typical values at VCC = 3.3 V.
2. Typical values at VCC = 5.0 V.
2000 Mar 14
11
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