M490000000 datasheet(35/62 Pages) AMD

35 / 62 page

Am49DL640BG

March 8, 2002

PR E L I M I N A R Y

ABSOLUTE MAXIMUM RATINGS

Storage Temperature

Plastic Packages . . . . . . . . . . . . . . . –55

°C to +125°C

Ambient Temperature

with Power Applied . . . . . . . . . . . . . . –40

°C to +85°C

Voltage with Respect to Ground

CCf, VCCs (Note 1) . . . . . . . . . . . . –0.5 V to +4.0 V

RESET# (Note 2) . . . . . . . . . . . . –0.5 V to +12.5 V

WP#/ACC . . . . . . . . . . . . . . . . . . –0.5 V to +10.5 V

All other pins (Note 1) . . . . . . –0.5 V to V

CC +0.5 V

Output Short Circuit Current (Note 3) . . . . . . 200 mA

Notes:

1. Minimum DC voltage on input or I/O pins is –0.5 V.

Du ring v ol tage tran sitions, input or I/O pi ns may

overshoot V

SS to –2.0 V fo r periods of up to 20 ns.

Maximum DC voltage on input or I/O pins is V

CC +0.5 V.

See Figure 7. During voltage transitions, input or I/O pins

may overshoot to V

CC +2.0 V for periods up to 20 ns. See

Figure 8.

2. Minimum DC input voltage on pins RESET#, and

WP# / AC C is – 0.5 V. Du ri ng v o lt age tra n s iti on s,

WP#/ACC, and RESET# may overshoot V

SS to –2.0 V

for periods of up to 20 ns. See Figure 7. Maximum DC

input voltage on pin RESET# is +12.5 V which may

overshoot to +14.0 V for periods up to 20 ns. Maximum

DC input voltage on WP#/ACC is +9.5 V which may

overshoot to +12.0 V for periods up to 20 ns.

3. No more than one output may be shorted to ground at a

time. Duration of the short circuit should not be greater

than one second.

Stresses above those listed under “Absolute Maximum

Ratings” may cause permanent damage to the device. This

is a stress rating only; functional operation of the device at

these or any other conditions above those indicated in the

operational sections of this data sheet is not implied.

Exposure of th e device to absolute max imu m ra ting

conditions for extended periods may affect device reliability.

Figure 7.

Maximum Negative

Overshoot Waveform

Figure 8.

Maximum Positive

Overshoot Waveform

OPERATING RANGES

Industrial (I) Devices

Ambient Temperature (T

A) . . . . . . . . . –40°C to +85°C

CCf/VCCs Supply Voltages

CCf/VCCs for standard voltage range . . 2.7 V to 3.3 V

Operating ranges define those limits between which the

functionality of the device is guaranteed.

20 ns

+0.8 V

–0.5 V

20 ns

–2.0 V

20 ns

+2.0 V

+0.5 V

20 ns

2.0 V

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