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74LV574 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 74LV574
Description  Octal D-type flip-flop; positive edge-trigger 3-State
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74LV574 Datasheet(HTML) 2 Page - NXP Semiconductors

 
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Philips Semiconductors
Product specification
74LV574
Octal D-type flip-flop; positive edge-trigger (3-State)
2
1998 Jun 10
853-1990 19545
FEATURES
Wide operating voltage: 1.0 to 5.5V
Optimized for Low Voltage applications: 1.0 to 3.6V
Accepts TTL input levels between V
CC = 2.7V and VCC = 3.6V
Typical V
OLP (output ground bounce) t 0.8V at VCC = 3.3V,
Tamb = 25°C
Typical V
OHV (output VOH undershoot) u 2V at VCC = 3.3V,
Tamb = 25°C
Common 3-State output enable input
Output capability: bus driver
I
CC category: MSI
DESCRIPTION
The 74LV574 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT574.
The 74LV574 is an octal D-type flip–flop featuring separate D-type
inputs for each flip-flop and non-inverting 3-state outputs for bus
oriented applications. A clock (CP) 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.
QUICK REFERENCE DATA
GND = 0V; Tamb = 25°C; tr =tf v2.5 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
tPHL/tPLH
Propagation delay
CP to Qn
CL = 15pF
VCC = 3.3V
13
ns
fmax
Maximum clock frequency
CL = 15pF, VCC = 3.3V
77
MHz
CI
Input capacitance
3.5
pF
CPD
Power dissipation capacitance per flip-flop
Notes 1 and 2
25
pF
NOTES:
1. CPD is used to determine the dynamic power dissipation (PD in µW)
PD = CPD
VCC2 x fi )S (CL
VCC2
fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
S (CL
VCC2
fo) = sum of the outputs.
2. The condition is VI = GND to VCC
ORDERING AND PACKAGE INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH
AMERICA
NORTH AMERICA
PKG. DWG. #
20-Pin Plastic DIL
–40
°C to +125°C
74LV574 N
74LV574 N
SOT146-1
20-Pin Plastic SO
–40
°C to +125°C
74LV574 D
74LV574 D
SOT163-1
20-Pin Plastic SSOP Type II
–40
°C to +125°C
74LV574 DB
74LV574 DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40
°C to +125°C
74LV574 PW
74LV574PW DH
SOT360-1
PIN DESCRIPTION
PIN NUMBER
SYMBOL
FUNCTION
1
OE
Output enabled input (active LOW)
2, 3, 4, 5,
6, 7, 8, 9
D0–D7
Data inputs
19, 18, 17, 16,
15, 14, 13, 12
Q0–Q7
3-State flip-flop outputs
10
GND
Ground (0V)
11
CP
Clock input (LOW-to-HIGH,
edge-triggered)
20
VCC
Positive supply voltage
FUNCTION TABLE
OPERATING
INPUTS
INTERNAL
OUTPUTS
MODES
OE
CP
Dn
FLIP-FLOPS
Q0 to Q7
Load and read
register
L
L
l
h
L
H
L
H
Load register and
disable outputs
H
H
l
h
L
H
Z
Z
H
= HIGH voltage level
h
= HIGH voltage level one set-up time prior to the
LOW-to-HIGH CP transition
L
= LOW voltage level
l
= LOW voltage level one set-up time prior to the
LOW-to-HIGH CP transition
Z
= High impedance OFF-state
= LOW–to–HIGH clock transition


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