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参数资料
| 型号： | SN54AS879JT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | AS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDIP24 |
| 封装： | 0.300 INCH, CERAMIC, DIP-24 |
| 文件页数： | 4/8页 |
| 文件大小： | 112K |
| 代理商： | SN54AS879JT |
SN54ALS878A, SN54ALS879A
SN74ALS878A, SN74ALS879A
DUAL 4BIT DTYPE EDGETRIGGERED FLIPFLOPS WITH 3STATE OUTPUTS
SDAS062A D2661, APRIL 1982 REVISED MAY 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range:
SN54ALS878A, SN54ALS879A
55
°C to 125°C
. . . . . . . . . . . . . . . .
SN74ALS878A, SN74ALS879A
0
°C to 70°C
. . . . . . . . . . . . . . . . . . .
Storage temperature range
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
recommended operating conditions
SN54ALS878A
SN54ALS879A
SN74ALS878A
SN74ALS879A
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
’ALS878A
0
25
0
30
MHz
fclock
Clock frequency
’ALS879A
0
20
0
25
MHz
tw
Pulse duration
’ALS878A CLK high or low
20
16.5
ns
tw
Pulse duration
’ALS879A CLK high or low
25
20
ns
tsu
Setup time before CLK
↑
Data
15
ns
tsu
Setup time before CLK
↑
CLR
20
ns
th
Hold time after CLK
↑
Data
4
ns
th
Hold time after CLK
↑
CLR
0
ns
TA
Operating free-air temperature
55
125
0
70
°
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS878A
SN74ALS878A
PARAMETER
TEST CONDITIONS
SN54ALS879A
SN74ALS879A
UNIT
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
VCC = 4.5 V,
IOH = 2.6 mA
2.4
3.2
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,
VO = 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
30
112
30
112
mA
Outputs high
14
23
14
23
ICC
VCC = 5.5 V
Outputs low
18
31
18
31
mA
Outputs disabled
20
33
20
33
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.
相关PDF资料 |
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| SN54ALS879AJT | ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDIP24 |
| SN74ALS879ANT | ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP24 |
| SN74AS879NT-10 | AS SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDIP24 |
| SN74ALS879FN-00 | ALS SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PQCC28 |
| SN54ALS878FH-00 | ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CQCC28 |
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