HP Car 3490A manual ?.46,f, ?6Tr%r,i, 74917-70

	D E L A Y
	M U L T IP L E XE R
	I 5 V H O S EH D S A
L € <
u t l	IIOLD A H
	TO U2(6), A27 . sv
L E V E L	17 -fou
T R A NS -
L A T O R
	F R O M U g O

I

I

M E M O R Y S T O R A G E

"u-l+5V

Rro(7) t 7 K

R t o ( 6 ) t 7 K

STATE STORAGE

LTON

R9 (6) t 7 K

TO ROM u t 4

+5v-..l		Rr o( 2 )
o v L
LSHC	LTON	t 7 K
		R 9 ( 5 )
		r 7 K

M E M O R YSTORAGE

+ 5 V

- (LEXN)

I5 EXTERNALTRIGGERENABLE T O U 7 ( 9 )

( H D S A )\

DELAYsELEcraHl

I

u6(3,t3)

lro

- ] r 5 v

L o v

(HDSB) I

DELAY SELECTBH J

{ H rH C )

INT IIOLD COMMANDH T O U 7 ( 3 )

+ 5 V

{ n r o l a t

? l 7 K

I

>(HMDB)

i

t-

I

I

I

To Dc swtrcHtNc

I

	r__+	".l']>-				-I5 ,,",.
H O L D B H			I . r ,	?6'^Tr%r,i ..
	I r
H n " o e l			'l lrru lto
sauplezroloE/ HOLD uoorMODEIL I I						srr aruar-ocl/
,l..,lyl	.[?.4'6,f			*'^" - "
			-ie-		)-J
	toMue(tst
	--,*J					1g

Figure7-35. SchematicDiagam, Sample/HoldLogic Circuits,A2g.

74917-70