2002 Mar 04
2
Philips Semiconductors
Product specification
Octal D-type flip-flop; positive edge-trigger;
3-state
74ALVC574
FEATURES
Wide supply voltage range from 1.65 to 3.6 V
Complies with JEDEC standard:
JESD8-7 (1.65 to 1.95 V)
JESD8-5 (2.3 to 2.7 V)
JESD8B/JESD36 (2.7 to 3.6 V).
3.6 V tolerant inputs/outputs
CMOS low power consumption
Direct interface with TTL levels (2.7 to 3.6 V)
Power-down mode
Latch-up performance exceeds
250 mA
ESD protection:
2000 V Human Body Model (JESD22-A114-A)
200 V Machine Model (JESD22-A115-A).
DESCRIPTION
The 74ALVC574 is a high-performance, low-power,
low-voltage, Si-gate CMOS device and superior to most
advanced CMOS compatible TTL families.
The 74ALVC574 is an octal D-type flip-flop featuring
separate D-type inputs for each flip-flop and 3-state
outputs for bus oriented applications. A clock (CP) input
and an output enable (OE) input are common to all
flip-flops.
The eight flip-flops will store the state of their individual
D-inputs that meet the set-up and hold times requirements
on the LOW-to-HIGH CP transition.
When OE is LOW, the contents of the eight flip-flops is
available at the outputs. When OE is HIGH, the outputs go
to the high-impedance OFF-state. Operation of the
OE input does not affect the state of the flip-flops.
The `574' is functionally identical to the `374', but the `374'
has a different pin arrangement.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
C.
Notes
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
W).
P
D
= C
PD
V
CC
2
f
i
+ (C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in Volts.
2. The condition is V
I
= GND to V
CC
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
propagation delay CP to Q
n
V
CC
= 1.8 V; C
L
= 30 pF; R
L
= 1 k
3.1
ns
V
CC
= 2.5 V; C
L
= 30 pF; R
L
= 500
2.3
ns
V
CC
= 2.7 V; C
L
= 50 pF; R
L
= 500
2.5
ns
V
CC
= 3.3 V; C
L
= 50 pF; R
L
= 500
2.5
ns
C
I
input capacitance
3.5
pF
C
PD
power dissipation capacitance per buffer
V
CC
= 3.3 V; notes 1 and 2
outputs enabled
21
pF
outputs disabled
13
pF
2002 Mar 04
3
Philips Semiconductors
Product specification
Octal D-type flip-flop; positive edge-trigger;
3-state
74ALVC574
ORDERING INFORMATION
FUNCTION TABLE
See note 1.
Note
1. H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the HIGH-to-LOW CP transition;
L = LOWvoltage level;
l = LOW voltage level one set-up time prior to the HIGH-to-LOW CP transition;
= LOW-to-HIGH clock transition;
Z = high-impedance OFF-state.
PINNING
TYPE NUMBER
PACKAGES
PINS
PACKAGE
MATERIAL
CODE
74ALVC574D
20
SO
plastic
SOT163-1
74ALVC574PW
20
TSSOP
plastic
SOT360-1
OPERATING MODES
INPUT
INTERNAL
FLIP-FLOPS
OUTPUT
OE
CP
D
n
Q
0
to Q
7
Load and read register
L
l
L
L
L
h
H
H
Latch and read register
H
l
L
Z
H
h
H
Z
PIN
SYMBOL
DESCRIPTION
1
OE
output enable input (active LOW)
2, 3, 4, 5, 6, 7, 8, 9
Q
0
to Q
7
3-state flip-flop output
10
GND
ground (0 V)
11
CP
clock input (LOW-to-HIGH, edge triggered)
12, 13, 14, 15, 16, 17, 18,
19
D
7
to D
0
data input
20
V
CC
supply voltage
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