74F524 Datasheet, PDF (10/14 Pages) NXP Semiconductors – 8-bit register comparator open-collector 3-State

Philips Semiconductors
8-bit register comparator (open collector + 3-State)
Product specification
74F524
AC WAVEFORMS (Continued)
For all waveforms, V_M = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
Sn
V_M
V_M
t_PZH
t_PHZ
V_OH -0.3V
I/On
V_M
0V
SF00978
Waveform 5. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
Sn
V_M
V_M
t_PZL
t_PLZ
I/On
V_M
V_OL +0.3V
SF00979
Waveform 6. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
TEST CIRCUIT AND WAVEFORMS
V_CC
V_IN
PULSE
GENERATOR
V_OUT
R_L
D.U.T.
R_T
C_L R_L
Test Circuit for 3-State Outputs
and Open Collector Outputs
SWITCH POSITION
TEST
t_PLZ, t_PZL
Open Collector
All other
SWITCH
closed
closed
open
7.0V
90%
NEGATIVE
PULSE
POSITIVE
PULSE
10%
t_w
V_M
10%
t_{THL (}t_f )
V_M
10%
t_{TLH (}t_r )
t_{TLH (}t_r )
90%
V_M
t_w
t_{THL (}t_f )
90%
V_M
Input Pulse Definition
90%
AMP (V)
0V
AMP (V)
10%
0V
DEFINITIONS:
R_L = Load resistor;
see AC electrical characteristics for value.
C_L = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
R_T = Termination resistance should be equal to Z_OUT of
pulse generators.
INPUT PULSE REQUIREMENTS
family
amplitude ^VM rep. rate
t_w
t_TLH
74F
3.0V 1.5V 1MHz 500ns 2.5ns
t_THL
2.5ns
SF00980
1990 Aug 07
10