MC74AC521 Datasheet, PDF (5/6 Pages) Motorola, Inc – 8-BIT IDENTITY COMPARATOR

MC74AC521 MC74ACT521
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT
74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
tPLH
Propagation Delay
An or Bn to OA=B
tPHL
Propagation Delay
An or Bn to OA=B
tPLH
Propagation Delay
IA=B to OA=B
tPHL
Propagation Delay
IA=B to OA=B
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
5.0 3.0
5.0 3.0
5.0 2.0
5.0 2.5
9.0 2.5 9.5
ns
3-6
10 2.5 11
ns
3-6
6.5 2.0 7.0
ns
3-6
7.5 2.0 8.0
ns
3-6
CAPACITANCE
Symbol
Parameter
CIN
CPD
Input Capacitance
Power Dissipation Capacitance
Value
Typ
Unit
4.5
pF
40
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
APPLICATIONS
RIPPLE EXPANSION
A0 B0
A7 B7
........
ENABLE
LOW
IA=B
OA=B
A8 B8
A15 B15
........
IA=B
OA=B
A16 B16 A23 B23
........
IA=B
OA=B
PARALLEL EXPANSION
A0 B0
A7 B7
........
ENABLE
LOW
IA=B
OA=B
A8 B8
A15 B15
........
IA=B
OA=B
A16 B16 A23 B23
........
IA=B
OA=B
FACT DATA
5-5