UVEPROM

SMJ27C256

Austin Semiconductor, Inc.

SMJ27C256

Rev. 1.0 9/01

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

5

*Stresses greater than those listed under "Absolute Maximum

Ratings" may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at

these or any other conditions above those indicated in the

operation section of this specification is not implied.

Exposure to absolute maximum rating conditions for extended

periods may affect reliability.

** All voltage values are with respect to GND.

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage Range, V

CC

**...........................-0.6V to +7.0V

Supply Voltage Range, V

pp

**.........................-0.6V to +14.0V

Input Voltage Range, All inputs except A9

A9.....-0.6V to +13.5V

Output Voltage Range**...............................-0.6V to V

CC

+1V

Minimum Operating Free-air Temperature, T

A

..............-55°C

Maximum Operating Case Temperature, T

C

...................125°C

Storage Temperature Range, T

stg

.....................-65°C to 150°C

RECOMMENDED OPERATING CONDITIONS

NOTES:

1. V

board when V

2. V

ELECTRICAL CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE AND

OPERATING FREE-AIRTEMPERATURE

NOTES:

1. Typical values are at T

A

=25°C and nominal voltages.

2. This parameter has been characterized at 25°C and is not tested.

MIN

TYP

MAX

UNIT

4.5

5

5.5

V

6.25

6.5

6.75

V

V

12.75

13

13.25

V

TTL inputs

2

V

CMOS inputs

V

TTL inputs

-0.5

0.8

V

CMOS inputs

-0.5

0.2

V

11.5

13

V

-55

°C

+125

°C

Read Mode

1

SNAP! Pulse programming algorithm

Supply Voltage

Read Mode

2

SNAP! Pulse programming algorithm

High-level input voltage

Supply Voltage

Low-level input voltage

Operating free-air temperature

Operating case temperature

Voltage level on A9 for signature mode

TEST CONDITIONS

MIN

TYP

1

MAX

UNIT

2.4

V

0.4

V

±1

µA

±1

µA

10

µA

35

50

mA

TTL-Input Level

500

µA

CMOS-Input Level

300

µA

'27C256-15

'27C256-17

'27C256-20

'27C256-25

open

15

25

mA

100

mA

Output current (leakage)

PARAMETER

High-level output voltage

Low-level output voltage

Input current (leakage)

Output current (leakage)

2