Cypress CY7C292A, CY7C293A, CY7C291A manual AC Test Loads and Waveforms4

CY7C291A

CY7C292A/CY7C293A

AC Test Loads and Waveforms[4]

R1250 Ω R1250 Ω

5V	5V
OUTPUT	OUTPUT

	R2			R2
30pF	167Ω	5 pF		167Ω
INCLUDING		INCLUDING
JIG AND		JIG AND	C291A-4
SCOPE		SCOPE
(a) Normal Load		(b) High Z Load

3.0V

GND

<5 ns

ALL INPUT PULSES
	90%	90%
			10%
10%

< 5 ns

C291A-5

Equivalent to:		THÉVENIN EQUIVALENT
		100Ω
		OUTPUT	2.0V	C291A-6
				tPD	tPU
	VCC
SUPPLY				50%	50%
CURRENT
A0 −	A10
ADDRESS
CS2 −	CS3
	CS1
		tAA		tHZCS	tACS
O0 -	O7
					C291A-7

Switching Characteristics Over the Operating Range[3, 4]

				7C291A-25		7C291A-35		7C291A-50
				7C292A-25		7C292A-35		7C292A-50
				7C293A-25		7C293A-35		7C293A-50
		7C291A-20		7C291AL-25		7C291AL-35		7C291AL-50
		7C292A-20		7C292AL-25		7C292AL-35		7C292AL-50
		7C293A-20		7C293AL-25		7C293AL-35		7C293AL-50
Parameter	Description	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Unit
tAA	Address to Output Valid		20		25		35		50	ns
tHZCS1	Chip Select Inactive to High Z		15		15		20		20	ns
tACS1	Chip Select Active to Output Valid		15		15		20		20	ns
tHZCS2	Chip Select Inactive to High Z		22		27		35		45	ns
	(7C293A CS1 Only)[6]
tACS2	Chip Select Active to Output Valid		22		27		35		45	ns
	(7C293A CS1 Only)[6]
tPU	Chip Select Active to Power-Up	0		0		0		0		ns
	(7C293A CS1 Only)
tPD	Chip Select Inactive to Power-Down		22		27		35		45	ns
	(7C293A CS1 Only)

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