4
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT16543AT/CT/ET
FAST CMOS 16-BIT LATCHED TRANSCEIVER
POWER SUPPLY CHARACTERISTICS
Symbol Parameter Test Conditions
(1)
Min. Typ.
(2)
Max. Unit
ΔI
CC Quiescent Power Supply VCC = Max. — 0.5 1.5 mA
Current TTL Inputs HIGH V
IN = 3.4V
(3)
ICCD Dynamic Power Supply Current
(4)
VCC = Max., Outputs Open VIN = VCC — 60 100 µA /
xCEAB and xOEAB = GND V
IN = GND MHz
xCEBA = V
CC
One Input Toggling
50% Duty Cycle
I
C Total Power Supply Current
(6)
VCC = Max., Outputs Open VIN = VCC — 0.6 1.5 mA
f
i = 10MHz VIN = GND
50% Duty Cycle
xLEAB, xCEAB and
xOEAB = GND V
IN = 3.4V — 0.9 2.3
xCEBA = VCC VIN = GND
One Bit Toggling
VCC = Max., Outputs Open VIN = VCC — 2.4 4.5
(5)
fi = 2.5MHz VIN = GND
50% Duty Cycle
xLEAB, xCEAB and
xOEAB = GND V
IN = 3.4V — 6.4 16.5
(5)
xCEBA = VCC VIN = GND
Sixteen Bits Toggling
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCPNCP/2 + fiNi)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fi = Input Frequency
Ni = Number of Inputs at fi
