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參數(shù)資料
| 型號(hào)： | HCT259 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Zener Diode; Zener Voltage Typ, Vz:2.7V; Vz Test Current, Izt:20mA; Power Dissipation, Pd:500mW; Package/Case:DO-35; Breakdown Voltage Max:2.7V; Forward Current:200A; Leakage Current Max:100uA; Mounting Type:Through Hole |
| 中文描述： | 8位可尋址鎖存器 |
| 文件頁(yè)數(shù)： | 4/20頁(yè) |
| 文件大?。?/td> | 95K |
| 代理商： | HCT259 |
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2000 Mar 14
4
Philips Semiconductors
Product specification
8-bit addressable latch
74AHC259;
74AHCT259
FUNCTION TABLE
See note 1.
Note
1.
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
d = HIGH or LOW data one set-up time prior to the LOW-to-HIGH LE transition;
q = lower case letters indicate the state of the referenced output established during the last cycle in which it was
addressed or cleared.
ORDERING INFORMATION
OPERATING MODE
INPUTS
OUTPUTS
MR
LE
D
A0
A1
A2
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
reset
L
H
X
d
d
d
d
d
d
d
d
X
d
d
d
d
d
d
d
H
X
L
H
L
H
L
H
L
H
X
L
H
L
H
L
H
L
H
X
L
L
H
H
L
L
H
H
X
L
L
H
H
L
L
H
H
X
L
L
L
L
H
H
H
H
X
L
L
L
L
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
demultiplexer
(active HIGH
8-channel)
decoder (when D = H)
L
L
Q = d
L
L
L
L
L
L
L
q
0
Q = d
q
0
q
0
q
0
q
0
q
0
q
0
q
0
Q = d
L
L
L
L
L
L
q
1
q
1
Q = d
q
1
q
1
q
1
q
1
q
1
q
1
Q = d
L
L
L
L
L
q
2
q
2
q
2
Q = d
q
2
q
2
q
2
q
2
q
2
Q = d
L
L
L
L
q
3
q
3
q
3
q
3
Q = d
q
3
q
3
q
3
q
3
Q = d
L
L
L
q
4
q
4
q
4
q
4
q
4
Q = d
q
4
q
4
q
4
Q = d
L
L
q
5
q
5
q
5
q
5
q
5
q
5
Q = d
q
5
q
5
Q = d
L
q
6
q
6
q
6
q
6
q
6
q
6
q
6
Q = d
q
6
Q = d
q
7
q
7
q
7
q
7
q
7
q
7
q
7
q
7
Q = d
memory (do nothing)
H
H
addressable latch
H
L
TYPE NUMBER
PACKAGES
TEMPERATURE
RANGE
40 to +125
°
C
PINS
PACKAGE
MATERIAL
CODE
74AHC259D
74AHC259PW
74AHCT259D
74AHCT259PW
16
16
16
16
SO
plastic
plastic
plastic
plastic
SOT109-1
SOT403-1
SOT109-1
SOT403-1
TSSOP
SO
TSSOP
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