參數(shù)資料
型號: 74HC7541
廠商: NXP Semiconductors N.V.
英文描述: Octal Schmitt trigger buffer/line driver; 3-state
中文描述: 八路施密特觸發(fā)緩沖器/線路驅(qū)動器,3態(tài)
文件頁數(shù): 5/7頁
文件大?。?/td> 55K
代理商: 74HC7541
December 1990
5
Philips Semiconductors
Product specification
Octal Schmitt trigger buffer/line driver; 3-state
74HC/HCT7541
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Transfer characteristics are given below (not applicable for OE
n
inputs).
Output capability: bus driver
I
CC
category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
TRANSFER CHARACTERISTICS FOR 74HC
Voltages are referred to GND (ground = 0 V)
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min. typ.
max.
min.
max.
min.
max.
t
PHL
/ t
PLH
propagation delay
A
n
to Y
n
39
14
11
44
16
13
58
21
17
14
5
4
120
24
20
160
32
27
160
32
27
60
12
10
150
30
26
200
40
34
200
40
34
75
15
13
180
36
32
240
48
41
240
48
41
90
18
15
ns
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Fig.8
t
PZH
/ t
PZL
3-state output enable time
OE
n
to Y
n
ns
Fig.8
t
PHZ
/ t
PLZ
3-state output disable time
OE
n
to Y
n
ns
Fig.8
t
THL
/ t
TLH
output transition time
ns
Fig.8
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min.
typ.
max. min.
max.
min. max.
V
T
+
positive-going threshold
1.50
3.15
4.20
1.50
3.15
4.20
1.50
3.15
4.20
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Figs 6 and 7
V
T
negative-going threshold
0.30
1.35
1.80
0.10
0.25
0.30
0.30
1.35
1.80
0.10
0.25
0.30
0.30
1.35
1.80
0.10
0.25
0.30
V
Figs 6 and 7
V
H
hysteresis (V
T
+
V
T
)
0.20
0.40
0.50
V
Figs 6 and 7
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