參數(shù)資料
型號(hào): SN74ALS569ANSRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 計(jì)數(shù)器
英文描述: ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDSO20
封裝: GREEN, PLASTIC, SOP-20
文件頁數(shù): 20/21頁
文件大?。?/td> 699K
代理商: SN74ALS569ANSRG4
SN54ALS569A, SN74ALS568A, SN74ALS569A
SYNCHRONOUS 4-BIT UP/DOWN DECADE AND BINARY COUNTERS
WITH 3-STATE OUTPUTS
SDAS229A – APRIL 1982 – REVISED JANUARY 1995
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54ALS569A
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS568A, SN74ALS569A
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
SN54ALS569A
SN74ALS568A
SN74ALS569A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
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
Q outputs
–1
– 2.6
mA
IOH
High-level output current
CCO and RCO
– 0.4
mA
IOL
Low level output current
Q outputs
12
24
mA
IOL
Low-level output current
CCO and RCO
4
8
mA
f lk
Clock frequency
SN74ALS568A
0
20
MHz
fclock
Clock frequency
′ALS569A
0
22
0
30
MHz
ACLR or LOAD low
20
15
SN74ALS568A
CLK high
25
tw
Pulse duration
SN74ALS568A
CLK low
25
ns
′ALS569A
CLK high
20
16.5
′ALS569A
CLK low
23
16.5
Data at A, B, C, D
25
20
ENP ENT
High
35
30
ENP, ENT
Low
25
20
SCLR
Low
20
15
tsu
Setup time before CLK
SCLR
High (inactive)
35
30
ns
LOAD
Low
20
15
LOAD
High (inactive)
35
30
U/D
35
30
ACLR inactive
10
th
Hold time after CLK
↑ for any input
0
ns
TA
Operating free-air temperature
–55
125
0
70
°C
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