IDT74FCT841A Datasheet, PDF (4/7 Pages) Integrated Device Technology – HIGH-PERFORMANCE CMOS BUS INTERFACE LATCHES

IDT54/74FCT841A/B/C
HIGH-PERFORMANCE CMOS BUS INTERFACE LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC – 0.2V
Symbol
Parameter
Test Conditions⁽¹⁾
Min. Typ.⁽²⁾ Max. Unit
ICC
Quiescent Power Supply Current VCC = Max.
VIN ≥ VHC; V IN ≤ VLC
— 0.2 1.5 mA
∆ICC
Quiescent Power Supply Current VCC = Max.
TTL Inputs HIGH
VIN = 3.4V⁽³⁾
— 0.5 2.0 mA
ICCD
Dynamic Power Supply
Current⁽⁴⁾
VCC = Max.
Outputs Open
OE = GND
VIN ≥ VHC
VIN ≤ VLC
— 0.15 0.25 mA/
MHz
LE = VCC
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current⁽⁶⁾
VCC = Max.
VIN ≥ VHC
— 1.7 4.0 mA
Outputs Open
VIN ≤ VLC
fi = 10MHz
(FCT)
50% Duty Cycle
OE = GND
VIN = 3.4V
— 2.0 5.0
LE = VCC
VIN = GND
One Bit Toggling
VCC = Max.
VIN ≥ VHC
—
3.2 6.5⁽⁵⁾
Outputs Open
VIN ≤ VLC
fi = 2.5MHz
(FCT)
50% Duty Cycle
OE = GND
VIN = 3.4V
—
5.2 14.5⁽⁵⁾
LE = VCC
VIN = GND
Eight 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 + ∆ICC DHNT + ICCD (fCP/2 + fiNi)
ICC = Quiescent Current
∆ICC = 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)
fi = Input Frequency
Ni = Number of Inputs at fi
All currents are in milliamps and all frequencies are in megahertz.
2607 tbl 06
7.22
4