參數(shù)資料
型號(hào)： SN74HC4040DT
廠商： TEXAS INSTRUMENTS INC
元件分類： 計(jì)數(shù)器
英文描述： HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 12-BIT UP BINARY COUNTER, PDSO16
封裝： GREEN, PLASTIC, MS-012AC, SOIC-16
文件頁(yè)數(shù)： 12/21頁(yè)
文件大小： 850K
代理商： SN74HC4040DT
SN54HC4040, SN74HC4040
12BIT ASYNCHRONOUS BINARY COUNTERS
SCLS160D DECEMBER 1982 REVISED SEPTEMBER 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
(each buffer)
INPUTS
FUNCTION
CLK
CLR
FUNCTION
↑
L
No change
↓
L
Advance to next stage
X
H
All outputs L
logic diagram (positive logic)
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
95
3
2
4
13
12
14
15
1
11
10
CLR
CLK
QA
QD
QE
QH
QK
QL
QF
QG
QI
QJ
7
QB
6
QC
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, IO (VO = 0 to VCC)
±25 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND
±50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2): D package
73
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB package
82
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
67
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
64
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
108
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
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.
NOTES:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
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