NM27C256Q120 datasheet(3/11 Pages) FAIRCHILD

Part #	NM27C256Q120

Description	262,144-Bit (32K x 8) High Performance CMOS EPROM

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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Absolute Maximum Ratings (Note 1)

Storage Temperature

-65

°C to +150°C

All Input Voltages except A9 with

Respect to Ground

-0.6V to +7V

VPP and A9 with Respect

to Ground

-0.7V to +14V

VCC Supply Voltage with

Respect to Ground

-0.6V to +7V

ESD Protection

> 2000V

All Output Voltages with

Respect to Ground

V

CC + 1.0V to GND -0.6V

Operating Range

Range

Temperature

V

CC

Comm’l

0

°C to +70°C

+5V

±10%

Industrial

-40

°C to +85°C

+5V

±10%

Read Operation

DC Electrical Characteristics Over Operating Range with V

PP = VCC

Symbol

Parameter

Test Conditions

Min

Max

Units

V

IL

Input Low Level

-0.5

0.8

V

VIH

Input High Level

2.0

VCC +1

V

VOL

Output Low Voltage

IOL = 2.1 mA

0.4

V

VOH

Output High Voltage

IOH = -2.5 mA

3.5

V

I

SB1

V

CC Standby Current

CE = V

CC ±0.3V

100

µA

(Note 11)

(CMOS)

ISB2

VCC Standby Current (TTL)

CE = VIH

1mA

ICC1

VCC Active Current

CE = OE = VIL,f=5 MHz

35

mA

TTL Inputs

Inputs = V

IH or VIL, I/O = 0 mA

IPP

VPP Supply Current

VPP = VCC

10

µA

VPP

VPP Read Voltage

VCC - 0.7

VCC

V

I

LI

Input Load Current

V

IN = 5.5V or GND

-1

1

µA

I

LO

Output Leakage Current

V

OUT = 5.5V or GND

-10

10

µA

AC Electrical Characteristics Over Operating Range with V

PP = VCC

Symbol

Parameter

90

100

120

150

200

Units

Min Max Min Max Min Max Min Max Min Max

t

ACC

Address to Output Delay

90

100

120

150

200

ns

t

CE

CE to Output Delay

90

100

120

150

200

tOE

OE to Output Delay

35

50

tDF

Output Disable to

30

35

45

(Note 2)

Output Float

tOH

Output Hold from

00000

(Note 2)

Addresses,

CE or OE, Whichever

Occurred First

Capacitance (Note 2) T

A = +25˚C, f = 1 MHz

Symbol

Parameter

Conditions

Typ Max

Units

CIN

Input Capacitance

VIN = 0V

6

12

pF

COUT

Output Capacitance

VOUT = 0V

9

12

pF

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