M54HC148 datasheet(1/11 Pages) STMICROELECTRONICS

部件名	M54HC148

功能描述	8 TO 3 LINE PRIORITY ENCODER

PDF	11 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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M54HC148

M74HC148

October 1992

8 TO 3 LINE PRIORITY ENCODER

B1R

(Plastic Package)

ORDER CODES :

M54HC148F1R

M74HC148M1R

M74HC148B1R

M74HC148C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

INPUT AND OUTPUT EQUIVALENT CIRCUIT

DESCRIPTION

.

HIGH SPEED

tPD = 15 ns (TYP.) AT VCC =5 V

.

LOW POWER DISSIPATION

ICC =4

µA (MAX.) AT TA =25 °C

.

HIGH NOISE IMMUNITY

VNIH =VNIL =28 % VCC (MIN.)

.

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.

SYMMETRICAL OUTPUT IMPEDANCE

I

OH =IOL = 4 mA (MIN.)

.

BALANCED PROPAGATION DELAYS

tPLH =tPHL

.

WIDE OPERATING VOLTAGE RANGE

VCC (OPR) = 2 V TO 6 V

.

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS148

The M54/74HC148 is a high speed CMOS 8-TO-3

LINE PRIORITY ENCODER fabricated in silicon

gate C

2MOS technology.

It has the same high speed performance for LSTTL

combined with true CMOS low power consumption.

The M54/74HC148 encodes eight data lines to

three-line (4-2-1) binary (octal). Cascading circuitry

(enable input EI and enable output EO) has been

provided to allow octal expansion without the need

for external circuitry. Data inputs are active at the

low logic level.

All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age.

1/11

类似零件编号 - M54HC148

制造商	部件名	数据表	功能描述
STMicroelectronics	M54HC148	227Kb / 10P	RAD-HARD 8 TO 3 LINE PRIORITY ENCODER Mar-2004
	M54HC148	306Kb / 29P	Rad-hard high speed 2 to 6 V CMOS logic series 10-Aug-2011
	M54HC148D	227Kb / 10P	RAD-HARD 8 TO 3 LINE PRIORITY ENCODER Mar-2004
	M54HC148D	306Kb / 29P	Rad-hard high speed 2 to 6 V CMOS logic series 10-Aug-2011
	M54HC148D1	227Kb / 10P	RAD-HARD 8 TO 3 LINE PRIORITY ENCODER Mar-2004

More results

类似说明 - M54HC148

制造商	部件名	数据表	功能描述
Fairchild Semiconductor	74F148	61Kb / 6P	8-Line to 3-Line Priority Encoder
Fairchild Semiconductor	MM74HC148	77Kb / 8P	8-3 Line Priority Encoder
Hitachi Semiconductor	HD74HC148	45Kb / 8P	8-to-3-line Octal Priority Encoder
STMicroelectronics	M74HC148	329Kb / 11P	8 TO 3 LINE PRIORITY ENCODER Jul-2001
List of Unclassifed Man...	GD74HCT148	207Kb / 4P	8-TO-3 LINE PRIORITY ENCODER
National Semiconductor ...	MM74HCT148	215Kb / 5P	8-3 Line Priority Encoder
National Semiconductor ...	MM54HC148	127Kb / 6P	8-3 Line Priority Encoder
Toshiba Semiconductor	TC74HC148AP	353Kb / 9P	8-to-3 Line Priority Encoder
Renesas Technology Corp	HD74LS148	72Kb / 6P	8-line-to-3-line Octal Priority Encoder
Renesas Technology Corp	HD74HC148	79Kb / 6P	8-to-3-line Octal Priority Encoder