SN74S225

16

× 5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY

WITH 3-STATE OUTPUTS

SDLS207B – SEPTEMBER 1976 – REVISED APRIL 1998

4

POST OFFICE BOX 655303

schematics of inputs and outputs

VCC

Input

EQUIVALENT OF ALL INPUTS

EXCEPT DATA INPUTS

VCC

Input

EQUIVALENT OF

DATA INPUTS

58

Ω NOM

VCC

Output

TYPICAL OF

ALL OUTPUTS

–0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–0.5 V to 5.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Off-state output voltage range

–0.5 V to 5.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

67

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. All voltage values are with respect to GND.

2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace

length of zero.