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參數(shù)資料
| 型號(hào)： | SN54HC161WR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 計(jì)數(shù)器 |
| 英文描述： | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CDFP16 |
| 封裝： | CERAMIC, FP-16 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大小： | 202K |
| 代理商： | SN54HC161WR |
SN54HC161, SN74HC161
4-BIT SYNCHRONOUS BINARY COUNTERS
SCLS297A – JANUARY 1996 – REVISED MAY 1997
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25°C
SN54HC161
SN74HC161
UNIT
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
0
3.6
0
2.5
0
2.9
fclock
Clock frequency
4.5 V
0
18
0
12
0
14
MHz
6 V
0
21
0
14
0
17
2 V
140
200
170
tw
Pulse duration, CLK high or low
4.5 V
28
40
36
ns
6 V
24
36
30
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Note 3)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HC161
SN74HC161
UNIT
PARAMETER
(INPUT)
(OUTPUT)
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
3.6
2.5
2.9
fmax
4.5 V
18
12
14
MHz
6 V
21
14
17
NOTE 3: These limits apply only to applications that use more than two ’HC161 devices cascaded together.
If the ’HC161 are used as a single unit, or only two cascaded together, then the maximum clock frequency that
the device can use is not limited because of the glitch. In these situations, the device can be operated at the
maximum specifications.
A glitch can appear on RCO of a single ’HC161 device, depending on the relationship of ENT to CLK. Any
application that uses RCO to drive any input except an ENT of another cascaded ’HC161 must take this
into consideration.
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