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SN74ALS620AN 数据表(PDF) 6 Page - Texas Instruments

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部件名 SN74ALS620AN
功能描述  OCTAL BUS TRANSCEIVERS
Download  15 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74ALS620AN 数据表(HTML) 6 Page - Texas Instruments

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SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74ALS621A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.5
V
IOH
VCC = 4.5 V,
VOH = 5.5 V
0.1
mA
VOL
VCC =4 5V
IOL = 24 mA
0.35
0.5
V
VOL
VCC = 4.5 V
IOL = 48 mA‡
0.35
0.5
V
II
Control inputs
VCC =5 5V
VI = 7 V
0.1
mA
II
A or B ports
VCC = 5.5 V
VI = 5.5 V
0.1
mA
IIH
Control inputs
VCC =5 5V
VI =2 7V
20
µA
IIH
A or B ports§
VCC = 5.5 V,
VI = 2.7 V
20
µA
IIL
Control inputs
VCC =5 5V
VI =0 4V
– 0.1
mA
IIL
A or B ports§
VCC = 5.5 V,
VI = 0.4 V
– 0.1
mA
ICC
VCC =5 5V
Outputs high
29
40
mA
ICC
VCC = 5.5 V
Outputs low
35
48
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
§ For I/O ports, the parameters IIH and IIL include the off-state output current.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 680 Ω,
TA = MIN to MAX¶
UNIT
(INPUT)
(OUTPUT)
SN74ALS621A
MIN
MAX
tPLH
A
B
10
33
ns
tPHL
A
B
5
20
ns
tPLH
B
A
10
33
ns
tPHL
B
A
5
20
ns
tPLH
OEBA
A
10
39
ns
tPHL
OEBA
A
12
35
ns
tPLH
OEAB
B
10
39
ns
tPHL
OEAB
B
12
35
ns
¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.


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