CY5474FCT646T Datasheet, PDF (4/8 Pages) Texas Instruments – 8-Bit Registered Transceiver

CY54/74FCT646T
Power Supply Characteristics
Parameter
Description
Test Conditions
I_CC
∆I_CC
Quiescent Power Supply Current V_CC=Max., V_IN≤0.2V, V_IN≥V_CC–0.2V
Quiescent Power Supply Current V_CC=Max., V_IN=3.4V, f₁=0, Outputs Open^[10]
(TTL inputs HIGH)
I_CCD
I_C
Dynamic Power Supply
Current^[11]
Total Power Supply Current^[12]
V_CC=Max., One Input Toggling,
50% Duty Cycle, Outputs Open,
G=DIR=GND, GAB=GBA=GND,
V_IN≤0.2V or V_IN≥V_CC–0.2V
V_CC=Max., f₀=10 MHz,
50% Duty Cycle, Outputs Open,
One Bit Toggling at f₁=5 MHz,
G=DIR=GND, GAB=GBA=GND,
V_IN≤0.2V or V_IN≥V_CC–0.2V
V_CC=Max., f₀=10 MHz,
50% Duty Cycle, Outputs Open,
One Bit Toggling at f₁=5 MHz,
G=DIR=GND, GAB=GBA=GND,
V_IN=3.4V or V_IN=GND
V_CC=Max., f₀=10 MHz,
50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f₁=5 MHz,
G=DIR=GND, GAB=GBA=GND,
V_IN≤0.2V or V_IN≥V_CC–0.2V
V_CC=Max., f₀=10 MHz,
50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f₁=5 MHz,
G=DIR=GND, GAB=GBA=GND,
V_IN=3.4V or V_IN=GND
Notes:
10. Per TTL driven input (V_IN=3.4V); all other inputs at V_CC or GND.
11. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
12. I_C = I_QUIESCENT + I_INPUTS + I_DYNAMIC
I_C = I_CC+∆I_CCD_HN_T+I_CCD(f₀/2 + f₁N₁)
I_CC = Quiescent Current with CMOS input levels
∆I_CC = Power Supply Current for a TTL HIGH input (V_IN=3.4V)
D_H = Duty Cycle for TTL inputs HIGH
N_T = Number of TTL inputs at D_H
I_CCD = Dynamic Current caused by an input transition pair (HLH or LHL)
f₀ = Clock frequency for registered devices, otherwise zero
f₁ = Input signal frequency
N₁ = Number of inputs changing at f₁
All currents are in milliamps and all frequencies are in megahertz.
13. Values for these conditions are examples of the I_CC formula. These limits are specified but not tested.
Typ.^[7]
0.1
0.5
0.06
0.7
1.2
2.8
5.1
Max.
Unit
0.2
mA
2.0
mA
0.12 mA/MHz
1.4
mA
3.4
mA
5.6^[13]
mA
14.6^[13]
mA
4