PI74LPT16827
3.3V 20-BIT BUFFERS
Power Supply Characteristics
Parameters Description
Test Conditions(1)
VCC = Max.
Min. Typ(2) Max. Units
ICC
Quiescent Power Supply Current
VIN = GND or VCC
VIN = VCC – 0.6V(3)
0.1
2.0
10
30
µA
µA
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
ICCD
Dynamic Power Supply(4)
VCC = Max.,
VIN = VCC
50
75
µA/
Outputs Open
XOE = GND
VIN = GND
MHz
One Bit Toggling
50% Duty Cycle
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
VIN = VCC – 0.6V
VIN = GND
0.6
2.3
mA
50% Duty Cycle
XOE = GND
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
VIN = VCC – 0.6V
VIN = GND
2.1
4.7(5)
16 Bits Toggling
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. Per TTL driven input; 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 (ICCL, ICCH and ICCZ)
∆ICC = Power Supply Current for a TTL High Input
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
All currents are in milliamps and all frequencies are in megahertz.
PS2075A 01/16/97
4
RECOM [ RECOM INTERNATIONAL POWER ]
