參數(shù)資料
型號: SN74ALS621ADWRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: ALS SERIES, 1-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝: GREEN, PLASTIC, SOIC-20
文件頁數(shù): 14/18頁
文件大?。?/td> 552K
代理商: SN74ALS621ADWRG4
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX
UNIT
SN74ALS620A
SN74ALS623A
MIN
MAX
MIN
MAX
tPLH
A
B
2
10
2
13
ns
tPHL
A
B
2
10
3
11
ns
tPLH
B
A
2
10
2
13
ns
tPHL
B
A
2
10
3
11
ns
tPZH
OEBA
A
3
17
5
22
ns
tPZL
OEBA
A
5
25
5
22
ns
tPHZ
OEBA
A
2
12
2
16
ns
tPLZ
OEBA
A
3
18
2
19
ns
tPZH
OEAB
B
3
18
5
22
ns
tPZL
OEAB
B
5
25
5
22
ns
tPHZ
OEAB
B
2
12
2
16
ns
tPLZ
OEAB
B
3
18
2
19
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI: All inputs and I/O ports
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74ALS621A
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN74ALS621A
UNIT
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VOH
High-level output voltage
5.5
V
IOL
Low level output current
24
mA
IOL
Low-level output current
48§
mA
TA
Operating free-air temperature
0
70
°C
§ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
相關(guān)PDF資料
PDF描述
SN74ALS621ADWRE4 ALS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
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SN74ALS621A-1DWR ALS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
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