Cypress CY7C1543V18, CY7C1545V18 Maximum Ratings, Operating Range, Electrical Characteristics

CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18

Maximum Ratings

Exceeding maximum ratings may impair the useful life of the device. These user guidelines are not tested.

Storage Temperature ................................. –65°C to +150°C

Ambient Temperature with Power Applied.. –55°C to +125°C

Supply Voltage on VDD Relative to GND		–0.5V to +2.9V
Supply Voltage on VDDQ Relative to GND		–0.5V to +VDD
DC Applied to Outputs in High-Z	–0.5V to VDDQ + 0.3V
DC Input Voltage [14]	–0.5V to V + 0.3V
		DD

Current into Outputs (LOW)				20 mA
Static Discharge Voltage (MIL-STD-883, M. 3015)...				>2001V
Latch-up Current	....................................................			>200 mA
Operating Range
Range	Ambient	V	[18]	V	[18]
	Temperature (T )
	A		DD		DDQ
Commercial	0°C to +70°C	1.8	± 0.1V	1.4V to
					VDD
Industrial	–40°C to +85°C

Electrical Characteristics

DC Electrical Characteristics

Over the Operating Range [15]

Parameter	Description	Test Conditions			Min	Typ	Max	Unit
VDD	Power Supply Voltage				1.7	1.8	1.9	V
VDDQ	IO Supply Voltage				1.4	1.5	VDD	V
VOH	Output HIGH Voltage	Note 19			VDDQ/2 – 0.12		VDDQ/2 + 0.12	V
VOL	Output LOW Voltage	Note 20			VDDQ/2 – 0.12		VDDQ/2 + 0.12	V
VOH(LOW)	Output HIGH Voltage	IOH = −0.1 mA, Nominal Impedance			VDDQ – 0.2		VDDQ	V
VOL(LOW)	Output LOW Voltage	IOL = 0.1 mA, Nominal Impedance			VSS		0.2	V
VIH	Input HIGH Voltage [14]				VREF + 0.1		VDDQ + 0.15	V
VIL	Input LOW Voltage [14]				–0.15		VREF – 0.1	V
IX	Input Leakage Current	GND ≤ VI ≤ VDDQ			−2		2	μA
IOZ	Output Leakage Current	GND ≤ VI ≤ VDDQ, Output Disabled			−2		2	μA
VREF	Input Reference Voltage [21]	Typical Value = 0.75V			0.68	0.75	0.95	V
IDD [22]	VDD Operating Supply	VDD = Max,	375 MHz	x8			1300	mA
		IOUT = 0 mA,
				x9			1300
		f = fMAX = 1/tCYC
				x18			1300
				x36			1370
			333 MHz	x8			1200	mA
				x9			1200
				x18			1200
				x36			1230
			300 MHz	x8			1100	mA
				x9			1100
				x18			1100
				x36			1140

Notes

18.Power up: Assumes a linear ramp from 0V to VDD(min) within 200 ms. During this time VIH < VDD and VDDQ < VDD.

19.Output are impedance controlled. IOH = −(VDDQ/2)/(RQ/5) for values of 175 Ω <= RQ <= 350 Ω.

20.Output are impedance controlled. IOL = (VDDQ/2)/(RQ/5) for values of 175 Ω <= RQ <= 350 Ω.

21.VREF (min) = 0.68V or 0.46VDDQ, whichever is larger, VREF (max) = 0.95V or 0.54VDDQ, whichever is smaller.

22.The operation current is calculated with 50% read cycle and 50% write cycle.

Document Number: 001-05389 Rev. *F Page 20 of 28

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