参数资料
型号: SN74ALS874BNSRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO24
封装: GREEN, PLASTIC, SOP-24
文件页数: 13/18页
文件大小: 554K
代理商: SN74ALS874BNSRG4
SN54ALS874B, SN74ALS874B, SN74ALS876A
SN74AS874, SN74AS876
DUAL 4BIT DTYPE EDGETRIGGERED FLIPFLOPS
SDAS061C APRIL 1982 REVISED JANUARY 1995
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
recommended operating conditions
SN54ALS874B
SN74ALS874B
SN74ALS876A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.7
0.8
V
IOH
High-level output current
1
2.6
mA
IOL
Low-level output current
12
24
mA
fclock
Clock frequency
0
25
0
30
MHz
PRE or CLR low
15
10
tw
Pulse duration
CLK high
20
16.5
ns
tw
Pulse duration
CLK low
20
16.5
ns
tsu
Setup time before CLK
Data
15
ns
tsu
Setup time before CLK
PRE or CLR inactive
15
10
ns
th
Hold time, data after CLK
4
0
ns
TA
Operating free-air temperature
55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS874B
SN74ALS874B
SN74ALS876A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
V
VCC = 4.5 V to 5.5 V,
IOH = 0.4 mA
VCC 2
VOH
VCC = 4.5 V
IOH = 1 mA
2.4
3.3
V
VOH
VCC = 4.5 V
IOH = 2.6 mA
2.4
3.2
V
VOL
VCC = 4.5 V
IOL = 12 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
20
A
IOZL
VCC = 5.5 V,
VO = 0.4 V
20
A
II
VCC = 5.5 V,
VI = 7 V
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
VCC = 5.5 V,
VI = 0.4 V
0.2
mA
IO
VCC = 5.5 V,
VO = 2.25 V
20
112
30
112
mA
Outputs high
14
21
14
21
′ALS874B
VCC = 5.5 V
Outputs low
19
30
19
30
ICC
ALS874B
VCC = 5.5 V
Outputs disabled
20
32
20
32
mA
ICC
Outputs high
14
21
mA
SN74ALS876A
VCC = 5.5 V
Outputs low
18
29
SN74ALS876A
VCC = 5.5 V
Outputs disabled
20
31
All typical values are at VCC = 5 V, TA = 25°C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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