參數(shù)資料
型號(hào): 74HC258
廠商: NXP Semiconductors N.V.
英文描述: Quad 2-input multiplexer; 3-state; inverting
中文描述: 四2輸入多路復(fù)用器,三態(tài);反相
文件頁(yè)數(shù): 6/16頁(yè)
文件大?。?/td> 83K
代理商: 74HC258
1999 Sep 02
6
Philips Semiconductors
Product specification
Quad 2-input multiplexer; 3-state; inverting
74HC/HCT258
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see chapter “HCMOS family characteristics” section “Family specifications”.
Output capability: bus driver.
I
CC
category: MSI.
Note to HCT types
The value of additional quiescent supply current (
I
CC
) for a unit load of 1 is given in the family specifications.
To determine
I
CC
per input, multiply this value by the unit load coefficient shown in Table 1.
Table 1
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF.
INPUT
UNIT LOAD COEFFICIENT
nI
0
nI
1
OE
S
0.50
0.50
1.50
1.50
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
25
40 to +85
40 to +125
V
CC
(V)
WAVEFORMS
MIN.
TYP.
MAX.
MIN.
MAX.
MIN.
MAX.
t
PHL
/t
PLH
propagation delay;
nI
0
to nY; nI
1
to nY
propagation delay;
S to nY
3-state output enable
time; OE to nY
3-state output disable
time; OE to nY
output transition time
16
27
34
41
ns
4.5
see Fig.6
19
34
43
51
ns
4.5
see Fig.6
t
PZH
/t
PZL
18
30
38
45
ns
4.5
see Fig.7
t
PHZ
/t
PLZ
17
30
38
45
ns
4.5
see Fig.7
t
THL
/t
TLH
5
12
15
18
ns
4.5
see Fig.6
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