480227 Datasheet, PDF (589/794 Pages) Texas Instruments – Pocket Data Book

4024
7-STAGE BINARY COUNTERS
1
CP
2
MR
7
GND
14
V_CC
Logic Diagram
CP Q
1 Q1
CP Q
R
CP Q
2
CP Q
R
CP Q
3
CP Q
R
CP Q
4
CP Q
R
CP Q
5
CP Q
R
CP Q
6
CP Q
R
CP Q
7
CP Q
R
12
Q₁’
11
Q₂
9
Q₃
6
Q₄
5
Q₅
4
Q₆
3
Q₇
FUNCTION TABLE (SN74)
CLK
↑
↓
X
CLR
L
L
H
OUTPUT
No Change
Advance to Next State
All Outputs Are Low
NOTE: H = High Voltage Level, L = Low Voltage Level,
X = Don’t Care, = ↑ Transition from Low to High Level,
↓ = Transition from High to Low.
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
PARAMETER
MAX or MIN
SN74
HC
CD74
HC
CD74
HCT
UNIT
ICC
MAX
0.08 0.16 0.16 mA
IOH
MAX
-4 -4 -4 mA
IOL
MAX
4 4 4 mA
TIMING REQUREMENTS AND SWITCHING CHARACTERISTICS
PARAMETER
INPUT
OUTPUT
MAX or MIN
SN74 CD74 CD74
HC HC HCT
fmax
tw
CP (CLK)
MR (CLR H)
tsu
CLR iow before CLK
tPLH
CP
Q1
tPHL
(CLK)
(QA)
tPLH
tPHL
MR
(CLR)
any Q
UNIT fmax : MHz, other : ns
MIN
MIN
MIN
MAX
MAX
22 20 16
23 24 30
20 24 30
20 -
-
30 42 60
30 42 60
- 51 60
33 51 60
584
: OBSOLETED or NOT RECOMMENDED NEW DESIGNS