M54HC238 datasheet(1/10 Pages) STMICROELECTRONICS

部件名	M54HC238

功能描述	3 TO 8 LINE DECODER

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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M54HC238

M74HC238

October 1993

3 TO 8 LINE DECODER

B1R

(Plastic Package)

ORDER CODES :

M54HC238F1R

M74HC238M1R

M74HC238B1R

M74HC238C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

DESCRIPTION

.

HIGH SPEED

tPD = 14 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

|IOH|= 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 54/74LS238

The M54/74HC238 is a high speed CMOS 3 to 8 line

decoder fabricated in silicon gate C

2MOS technology.

It has the same high speed performance of LSTTL

combined with true CMOS low power consumption. If

the device is enabled, 3 binary select inputs (A, B and

C) determine which one of outputs will go high. Enable

input G1 is held ”Low” or either G2A or G2B is held

”High” decoding function is inhibited and all the 8 out-

puts go low. Three enable inputs are provided to ease

cascade connection and application of this address

decoder in memory systems.

All inputs are equipped with protection circuits against

static discharge and transient excess voltage.

1/10

类似零件编号 - M54HC238

制造商	部件名	数据表	功能描述
STMicroelectronics	M54HC238	306Kb / 29P	Rad-hard high speed 2 to 6 V CMOS logic series 10-Aug-2011
	M54HC238D	306Kb / 29P	Rad-hard high speed 2 to 6 V CMOS logic series 10-Aug-2011
	M54HC238K	306Kb / 29P	Rad-hard high speed 2 to 6 V CMOS logic series 10-Aug-2011

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类似说明 - M54HC238

制造商	部件名	数据表	功能描述
STMicroelectronics	74VHC238	64Kb / 8P	3 TO 8 LINE DECODER Jun-1999
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Toshiba Semiconductor	TC74HC138AP	336Kb / 9P	3-to-8 Line Decoder
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