MC74F1803N View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MC74F1803N Datasheet PDF : 5 Pages
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MC74F1803
FUNCTIONAL DESCRIPTION
The MC74F1803 consists of four positive edge–triggered
flip–flops with individual D–type inputs and inverting
outputs. The buffered clock is common to all flip–flops
and the following specifications allow for outputs switching
simultaneously. The four flip–flops store the state of their
individual D inputs that meet the setup and hold time
requirements on the LOW–to–HIGH Clock (CP) transition.
The maximum frequency of the clock input is
70 megahertz and the LOW–to–HIGH and HIGH–to–LOW
propagation delays of the On output vary by at most,
2.0 nanoseconds. Therefore, the device is ideal for use as
a divide–by–two driver for high–frequency clock signals
that require symmetrical duty cycles. In addition, the
output–to–output skew is a maximum of 2.0 nanoseconds.
Finally, the IOH specification at 2.5 volts is guaranteed to
be at least –20 milli–amps. If their inputs are identical,
multiple outputs can be tied together and the IOH is
commensurately increased.
GUARANTEED OPERATION RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min Typ Max Unit
4.5 5.0 5.5
V
0
25
70
°C
—
— –20 mA
—
—
24
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (Unless otherwise specified)
Symbol
Parameter
Limits
Min
Typ
Max Unit
Test Conditions 1,2
VIH
Input HIGH Voltage
2.0
–
–
V Guaranteed Input HIGH Voltage
VIL
Input LOW Voltage
–
–
0.8
V Guaranteed Input LOW Voltage
VIK
Input Clamp Diode Voltage
–
–
–1.2 V VCC = MIN, IIN = –18 mA
VOH
Output HIGH Voltage An Outputs
74
2.5
–
–
V IOH = –20 mA VCC =4.5 V
VOL
Output LOW Voltage An Outputs
74
–
0.35
0.5
V IOL = 24 mA
VCC = MIN
IIH
Input HIGH Current
–
–
20
µA VCC = MAX, VIN = 2.7 V
–
–
100 µA VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
IOS
Output Short Circuit Current 3
–
–
–0.6 mA VCC = MAX, VIN = 0.5 V
–60
–
–150 mA VCC = MAX, VOUT = 0 V
ICC
Power Supply Current
–
–
70 mA VCC = MAX
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device
type.
2. Normal test conditions for this device are all four outputs switching simultaneously. Two outputs of the MC74F1803 can be tied together and
the IOH doubles.
3. Not more than one output should be shorted at a time, nor for more than 1 second.
AC OPERATING REQUIREMENTS (TA = 0°C to +70°C: VCC = +5.0 V ±10%: RL = 500 Ω)
Symbol
Parameter
CL = 50 pF
Min
Max
Unit
ts(H)
ts(L)
tf
th(H)
th(L)
Setup Time, HIGH or LOW: Dn to CP
tp + ts 1
Hold Time, HIGH or LOW: Dn to CP
3.0
–
ns
3.0
–
–
9.0
ns
2.0
–
ns
2.0
–
tw(H)
tw(L)
Cp Pulse Width HIGH or LOW
7.0
–
ns
6.0
–
1. The combination of the setup time (ts) requirement and maximum propagation delay (tp) are guaranteed to be within this limit for all conditions.
MOTOROLA
2
TIMING SOLUTIONS
BR1333 — REV 5
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