74LVC169 Philips, 74LVC169 Datasheet - Page 9

• Manufacturer Part Number: 74LVC169
• Description: Presettable synchronous 4-bit up/down binary counter
• Manufacturer: Philips

Philips Semiconductors
AC WAVEFORMS
V
V
V
Waveform 1.
delays, the clock pulse width and the maximum clock
frequency.
Waveform 2.
and output transition times.
Waveform 3.
to output (Q
clock (CP) removal times.
1998 May 20
M
M
OL
Presettable synchronous 4-bit up/down
binary counter
CP INPUT
Qn, TC OUTPUT
= 1.5 V at V
= 0.5 S V
and V
CET
V
GND
V
OL
TC
U/D
OH
TC
V
I
OH
CC
n
are the typical output voltage drop that occur with the output load.
, TC) propagation delays and the master reset to
CC
at V
Clock (CP) to outputs (Q
Input (CET) to output (TC) propagation delays
Master reset (MR) pulse width, the master reset
w 2.7 V
CC
V
t
M
PHL
V
t
< 2.7 V
w
t
M
PHL
V
t
PHL
M
1/f
MAX
V
M
V
M
V
M
V
t
n
PLH
M
, TC) propagation
t
PLH
V
t
PLH
M
SF00792
V
M
V
M
SF00793
SY00071
9
Waveform 4.
parallel enable input (PE).
Waveform 5.
TEST CIRCUIT
Waveform 6.
The shaded areas indicate when the input is permitted
to change for predictable output performance.
CP INPUT
CEP, CET
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
CP INPUT
PE INPUT
D
INPUT
GENERATOR
n
GND
GND
INPUT
PULSE
SWITCH POSITION
t
V
V
PLH/
TEST
GND
GND
GND
I
I
V
V
V
t
I
I
I
PHL
Load circuitry for switching times.
Setup and hold times for the input (D
CEP and CET setup and hold times.
V
t
su
Open
V
M
V
M
I
S
V
1
R
M
t
V
SU
T
t
SU
M
V
t
h
M
t
t
h
h
D.U.T.
V
CC
2.7–3.6V
< 2.7V
V
CC
V
O
C
L
2.7V
V
74LVC169
V
Product specification
CC
t
t
I
su
SU
50pF
t
SU
V
t
S
SV00903
n
h
t
M
t
h
1
500
500
h
SC00137
) and
SC00138
2 * V
Open
GND
CC