74F524 Philips, 74F524 Datasheet - Page 10

• Manufacturer Part Number: 74F524
• Description: 8-bit register comparator open-collector 3-State
• Manufacturer: Philips

Philips Semiconductors
AC WAVEFORMS (Continued)
For all waveforms, V
The shaded areas indicate when the input is permitted to change for predictable output performance.
TEST CIRCUIT AND WAVEFORMS
1990 Aug 07
Waveform 5. 3-State Output Enable Time to High Level and
8-bit register comparator (open collector + 3-State)
SWITCH POSITION
GENERATOR
DEFINITIONS:
R
C
R
I/On
TEST
t
Open Collector
All other
T
L
L
PLZ,
Sn
PULSE
= Load resistor;
= Load capacitance includes jig and probe capacitance;
= Termination resistance should be equal to Z
t
PZL
see AC electrical characteristics for value.
see AC electrical characteristics for value.
pulse generators.
Test Circuit for 3-State Outputs
Output Disable Time from High Level
and Open Collector Outputs
V
IN
M
t
V
PZH
= 1.5V.
M
R
T
D.U.T.
SWITCH
closed
closed
open
V
CC
V
M
V
OUT
t
PHZ
V
M
C
L
R
R
L
L
OUT
V
OH
SF00978
of
-0.3V
7.0V
0V
NEGATIVE
PULSE
POSITIVE
PULSE
10
family
74F
90%
10%
Waveform 6. 3-State Output Enable Time to Low Level and
I/On
amplitude
Sn
3.0V
V
INPUT PULSE REQUIREMENTS
V
M
90%
M
10%
Output Disable Time from Low Level
t
t
TLH (
THL (
Input Pulse Definition
1.5V
V
M
V
t
PZL
t
t
M
r
f
)
)
rep. rate
1MHz
t
t
w
w
V
t
t
M
TLH (
THL (
500ns
t
t
r
f
t
10%
90%
)
)
w
t
PLZ
V
V
M
V
M
M
2.5ns
t
TLH
Product specification
90%
10%
74F524
2.5ns
t
THL
V
OL
SF00979
SF00980
AMP (V)
0V
0V
AMP (V)
+0.3V