N74F169N PHILIPS [NXP Semiconductors], N74F169N Datasheet - Page 9

• Manufacturer Part Number: N74F169N
• Description: 4-bit up/down binary synchronous counter
• Manufacturer: PHILIPS [NXP Semiconductors]

1. Load (preset) to BCD seven
2. Count up to eight, nine (maximum), zero, one, and two
3. Inhibit
4. Count down to one, zero (minimum), nine, eight, and seven
Philips Semiconductors
TIMING DIAGRAM (Typical Load, Count, and Inhibit Sequences)
NOTES:
The operation of the 74F169 is similar to the Illustration above.
TEST CIRCUIT AND WAVEFORM
1996 Jan 05
4-bit up/down binary synchronous counter
DEFINITIONS:
R
C
R
T
L
L
GENERATOR
= Load resistor;
= Load capacitance includes jig and probe capacitance;
= Termination resistance should be equal to Z
PULSE
see AC ELECTRICAL CHARACTERISTICS for value.
see AC ELECTRICAL CHARACTERISTICS for value.
pulse generators.
Test Circuit for Totem-Pole Outputs
V
IN
R
T
CEP and CET
D.U.T.
V
CC
SEQUENCE
U/D
Q
Q
Q
Q
PE
D
D
D
D
CP
TC
V
0
1
2
3
0
1
2
3
OUT
C
LOAD
L
7
R
L
8
OUT
COUNT UP
of
9
0
NEGATIVE
PULSE
POSITIVE
PULSE
1
family
9
74F
2
INHIBIT
90%
10%
2
amplitude
3.0V
2
V
INPUT PULSE REQUIREMENTS
V
M
90%
M
10%
1
t
t
TLH (
THL (
Input Pulse Definition
1.5V
V
M
COUNT DOWN
0
t
t
r
f
)
)
rep. rate
9
1MHz
t
t
w
w
8
t
t
TLH (
THL (
SF00797
7
500ns
t
t
r
f
t
10%
90%
)
)
w
V
V
M
M
2.5ns
t
TLH
Product specification
90%
10%
74F169
2.5ns
t
THL
AMP (V)
0V
0V
AMP (V)
SF00006