MC74HC393ADT ONSEMI [ON Semiconductor], MC74HC393ADT Datasheet - Page 5

• Manufacturer Part Number: MC74HC393ADT
• Description: Dual 4-Stage Binary Ripple Counter
• Manufacturer: ONSEMI [ON Semiconductor]

INPUTS
Clock (Pins 1, 13)
counter state advances on high–to–low transitions of the
clock input.
CONTROL INPUTS
Reset (Pins 2, 12)
provided for each counter. A high at the Reset input prevents
counting and forces all four outputs low.
Clock input. The internal flip–flops are toggled and the
Active–high, asynchronous reset. A separate reset is
CLOCK
Q
*Includes all probe and jig capacitance
10%
50%
90%
90%
90%
50%
DEVICE
10%
UNDER
Figure 3. Test Circuit
TEST
t f
t w
t PLH
t TLH
Figure 1.
1/f max
OUTPUT
t r
t PHL
t THL
POINT
TEST
C L *
SWITCHING WAVEFORMS
V CC
GND
PIN DESCRIPTIONS
http://onsemi.com
MC74HC393A
CLOCK
RESET
5
OUTPUTS
Q1, Q2, Q3, Q4 (Pins 3, 4, 5, 6, 8, 9, 10, 11)
1, 13
2, 12
Parallel binary outputs Q4 is the most significant bit.
CLOCK
RESET
Q
EXPANDED LOGIC DIAGRAM
t PHL
Figure 2.
50%
D
D
D
D
t rec
C
C
C
C
50%
t w
Q
Q
Q
Q
Q
Q
Q
Q
50%
4, 10
3, 11
5, 9
6, 8
V CC
GND
V CC
GND
Q1
Q2
Q3
Q4