參數(shù)資料
型號(hào)： 935265468112
廠商： NXP SEMICONDUCTORS
元件分類： 編、解碼器及復(fù)用、解復(fù)用
英文描述： AHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封裝： 4.40 MM, PLASTIC, MO-153, SOT-403-1, TSSOP-16
文件頁(yè)數(shù)： 20/20頁(yè)
文件大小： 89K
代理商： 935265468112
2000 Apr 03
9
Philips Semiconductors
Product specication
Quad 2-input multiplexer; 3-state
74AHC257;
74AHCT257
AC CHARACTERISTICS
Type 74AHC257
GND = 0 V; tr =tf ≤ 3.0 ns.
Notes
1. Typical values at VCC = 3.3 V.
2. Typical values at VCC = 5.0 V.
SYMBOL
PARAMETER
TEST CONDITIONS
Tamb (°C)
UNIT
WAVEFORMS
CL
25
40 to +85
40 to +125
MIN.
TYP.
MAX.
MIN.
MAX.
MIN.
MAX.
VCC = 3.0 to 3.6 V; note 1
tPHL/tPLH
propagation delay
nI0 to nY; nI1 to nY
see Figs 6
and 8
15 pF
4.2
9.3
1.0
11.0
1.0
12.0
ns
propagation delay
StonY
5.2
11.0
1.0
13.0
1.0
14.0
ns
tPZH/tPZL
3-state output enable
time OE to nY
see Figs 7
and 8
4.5
10.5
1.0
12.5
1.0
13.5
ns
tPHZ/tPLZ
3-state output disable
time OE to nY
5.1
9.5
1.0
11.0
1.0
11.5
ns
tPHL/tPLH
propagation delay
nI0 to nY; nI1 to nY
see Figs 6
and 8
50 pF
6.0
12.8
1.0
14.5
1.0
16.0
ns
propagation delay
StonY
7.4
14.5
1.0
16.5
1.0
18.5
ns
tPZH/tPZL
3-state output enable
time OE to nY
see Figs 7
and 8
6.4
14.0
1.0
16.0
1.0
17.5
ns
tPHZ/tPLZ
3-state output disable
time OE to nY
7.2
12.0
1.0
13.5
1.0
14.5
ns
VCC = 4.5 to 5.5 V; note 2
tPHL/tPLH
propagation delay
nI0 to nY; nI1 to nY
see Figs 6
and 8
15 pF
2.9
5.9
1.0
7.0
1.0
7.5
ns
propagation delay
StonY
3.5
6.8
1.0
8.0
1.0
8.5
ns
tPZH/tPZL
3-state output enable
time OE to nY
see Figs 7
and 8
3.2
6.8
1.0
8.0
1.0
8.5
ns
tPHZ/tPLZ
3-state output disable
time OE to nY
3.4
6.5
1.0
7.0
1.0
8.5
ns
tPHL/tPLH
propagation delay
nI0 to nY; nI1 to nY
see Figs 6
and 8
50 pF
4.2
7.9
1.0
9.0
1.0
11.5
ns
propagation delay
StonY
5.0
8.8
1.0
10.0
1.0
12.5
ns
tPZH/tPZL
3-state output enable
time OE to nY
see Figs 7
and 8
4.5
8.8
1.0
10.0
1.0
12.5
ns
tPHZ/tPLZ
3-state output disable
time OE to nY
4.9
7.9
1.0
9.0
1.0
9.5
ns
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