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參數(shù)資料
| 型號： | SN54ALS561AFK |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | SYNCHRONOUS 4-BIT COUNTERS WITH 3-STATE OUTPUTS |
| 中文描述： | 同步4位計數(shù)器具有三態(tài)輸出 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 154K |
| 代理商： | SN54ALS561AFK |
SN54ALS561A, SN74ALS561A
SYNCHRONOUS 4-BIT COUNTERS
WITH 3-STATE OUTPUTS
SDAS225A – DECEMBER 1982 – REVISED JANUARY 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
Input voltage, V
I
Operating free-air temperature range, T
A
: SN54ALS561A
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS561A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55
°
C to 125
°
C
0
°
C to 70
°
C
–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
SN54ALS561A
MIN
NOM
SN74ALS561A
MIN
NOM
UNIT
MAX
MAX
VCC
VIH
VIL
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.7
0.8
V
IOH
High level output current
High-level output current
Q outputs
–1
–2.6
mA
CCO and RCO
–0.4
–0.4
IOL
Low level output current
Low-level output current
Q outputs
12
24
mA
CCO and RCO
4
8
fclock
Clock frequency
0
20
0
30
MHz
ACLR or ALOAD low
20
15
tw
Pulse duration
CLK high
20
16.5
ns
CLK low
25
16.5
ENP ENT
ENP, ENT
High
25
20
Low
25
20
Data at A, B, C, D
25
20
tsu
Setup time before CLK
↑
SCLR
Low
21
15
ns
High (inactive)
35
30
SLOAD
Low
20
15
High (inactive)
35
30
ACLR or ALOAD inactive
12
10
th
TA
Hold time after CLK
↑
for data, ENP, ENT, SCLR, or SLOAD
Operating free-air temperature
0
0
ns
°
C
–55
125
0
70
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