MM74HC147N datasheet(2/4 Pages) NSC

Part #	MM74HC147N

Description	10-to-4 Line Priority Encoder

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Manufacturer	NSC [National Semiconductor (TI)]

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Absolute Maximum Ratings (Notes12)

If MilitaryAerospace specified devices are required

please contact the National Semiconductor Sales

OfficeDistributors for availability and specifications

Supply Voltage (VCC)

b

05V to a70V

DC Input Voltage (VIN)

b

15V to VCCa15V

DC Output Voltage (VOUT)

b

05V to VCCa05V

Clamp Diode Current (IIK IOK)

g

20 mA

DC Output Current per pin (IOUT)

g

35 mA

DC VCC or GND Current per pin (ICC)

g

75 mA

Storage Temperature Range (TSTG)

b

65 Cto a150 C

Power Dissipation (PD)

(Note 3)

600 mW

SO Package only

500 mW

Lead Temperature (TL)

(Soldering 10 seconds)

260 C

Operating Conditions

Min

Max

Units

Supply Voltage (VCC)2

6

V

DC Input or Output Voltage

(VIN VOUT)0

VCC

V

Operating Temp Range (TA)

MM74HCT

b

40

a

85

C

MM54HCT

b

55

a

125

C

Input Rise or Fall Times

(tr tf)

500

ns

DC Electrical Characteristics VCC e 5V g10% (unless otherwise specified)

TAe25 C

74HCT

54HCT

Symbol

Parameter

Conditions

TAeb40 Cto a85 CTAeb55 Cto a125 C Units

Typ

Guaranteed Limits

VIH

Minimum High Level

20

V

Input Voltage

VIL

Maximum Low Level

08

V

Input Voltage

VOH

Minimum High Level VINeVIH or VIL

Output Voltage

lIOUTl e 20 mAVCC VCCb01

VCCb01

V

lIOUTl e 40 mA VCC e 45V 42

398

384

37

V

lIOUTl e 48 mA VCC e 55V 57

498

484

47

V

VOL

Maximum Low Level VINeVIH or VIL

Output Voltage

lIOUTl e 20 mA

0

01

V

lIOUTl e 40 mA VCC e 45V 02

026

033

04

V

lIOUTl e 48 mA VCC e 55V 02

026

033

04

V

IIN

Maximum Input

VIN e VCC or GND

g

01

g

10

g

10

m

A

Current

VIH or VIL

ICC

Maximum Quiescent VIN e VCC or GND

80

160

m

A

Supply Current

IOUT e 0 mA

VIN e 24V or 05V (Note 4)

20

29

30

mA

AC Electrical Characteristics VCC e 5V g10% CL e 50 pF tr e tf e 6 ns (unless otherwise specified)

TAe25 C

74HCT

54HCT

Symbol

Parameter

b

40 Cto a85 C

b

55 Cto a125 C

Units

Typ

Guaranteed Limits

tPD

Maximum Propagation Delay

22

28

33

ns

tr tf

Maximum Output Rise and Fall Time

7

11

14

17

ns

CPD

Power Dissipation Capacitance (Note 5)

TBD

pF

CIN

Maximum Input Capacitance

5

10

pF

AC Electrical Characteristics VCC e 5V TA e 25 C CL e 15 pF tr e tf e 6ns

TAe25 C

74HCT

54HCT

Symbol

Parameter

b

40 Cto a85 C

b

55 Cto a125 C

Units

Typ

Guaranteed Limits

tPD

Maximum Propagation Delay

11

ns

Note 1

Absolute Maximum Ratings are those values beyond which damage to the device may occur

Note 2

Unless otherwise specified all voltages are referenced to ground

Note 3

Power Dissipation temperature derating

plastic ‘‘N’’ package b12 mW C from 65 Cto85 C ceramic ‘‘J’’ package b12 mW C from 100 Cto125 C

Note 4

Measured per input other inputs held at VCC or GND

Note 5

CPD determines the no load dynamic power consumption and the no load dynamic current consumption

2

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