CY54/74FCT646T

4

Power Supply Characteristics

Parameter

Description

Test Conditions

Max.

Unit

Quiescent Power Supply Current

0.1

0.2

mA

∆I

CC

Quiescent Power Supply Current

(TTL inputs HIGH)

[10]

0.5

2.0

mA

Dynamic Power Supply

50% Duty Cycle, Outputs Open,

G=DIR=GND, GAB=GBA=GND,

0.06

0.12

mA/MHz

50% Duty Cycle, Outputs Open,

G=DIR=GND, GAB=GBA=GND,

0.7

1.4

mA

50% Duty Cycle, Outputs Open,

G=DIR=GND, GAB=GBA=GND,

1.2

3.4

mA

50% Duty Cycle, Outputs Open,

G=DIR=GND, GAB=GBA=GND,

2.8

mA

50% Duty Cycle, Outputs Open,

G=DIR=GND, GAB=GBA=GND,

5.1

mA

Notes:

11. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.

= Quiescent Current with CMOS input levels

∆I

CC

= Duty Cycle for TTL inputs HIGH

= Clock frequency for registered devices, otherwise zero

= Input signal frequency

All currents are in milliamps and all frequencies are in megahertz.