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SN74ALS878A 数据表(PDF) 6 Page - Texas Instruments

部件名 SN74ALS878A
功能描述  DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74ALS878A 数据表(HTML) 6 Page - Texas Instruments

  SN74ALS878A Datasheet HTML 1Page - Texas Instruments SN74ALS878A Datasheet HTML 2Page - Texas Instruments SN74ALS878A Datasheet HTML 3Page - Texas Instruments SN74ALS878A Datasheet HTML 4Page - Texas Instruments SN74ALS878A Datasheet HTML 5Page - Texas Instruments SN74ALS878A Datasheet HTML 6Page - Texas Instruments SN74ALS878A Datasheet HTML 7Page - Texas Instruments SN74ALS878A Datasheet HTML 8Page - Texas Instruments  
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SN54AS878, SN54AS879
SN74AS878, SN74AS879
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
6
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:
SN54AS878, SN54AS879
−55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . .
SN74AS878, SN74AS879
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
−65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
recommended operating conditions
SN54AS878
SN54AS879
SN74AS878
SN74AS879
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
2
V
VIL
Low-level input voltage
0.8
0.8
V
IOH
High-level output current
−12
−15
mA
IOL
Low-level output current
32
48
mA
fclock
Clock Frequency
0
100
0
125
MHz
tw
Pulse duration
CLK low
4
2
ns
tw
Pulse duration
CLK high
5
4
ns
tsu
Setup time before CLK
Data
3
2
ns
tsu
Setup time before CLK
CLR
6.5
5.5
ns
th
Hold time after CLK
Data
3
2
ns
th
Hold time after CLK
CLR
0
0
ns
TA
Operating free-air temperature
−55
125
0
70
°
°C


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