PI74LPT16245 Datasheet, PDF (4/5 Pages) Pericom Semiconductor Corporation – Fast CMOS 3.3V 16-Bit Bidirectional Transceiver

PI74LPT16245
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Power Supply Characteristics
Parameters Description
ICC
Quiescent Power Supply Current
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
ICCD
Dynamic Power Supply⁽⁴⁾
IC
Total Power Supply
Current⁽⁶⁾
Test Conditions⁽¹⁾
VCC = Max.
VIN = GND or VCC
VCC = Max.
VIN = VCC – 0.6V⁽³⁾
Min.
Typ⁽²⁾
0.1
2.0
Max.
10
30
Units
µA
µA
VCC = Max.,
Outputs Open
XOE = xDIR = GND
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
XOE = xDIR = GND
One Bit Toggling
VIN = VCC – 0.6V
VIN = GND
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = xDIR = GND
16 Bits Toggling
VIN = VCC – 0.6V
VIN = GND
50 75 µA/
MHz
0.5 0.8 mA
2.0 3.3⁽⁵⁾
Notes:
1. For Max. or Min. condition, 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.
4
PS2068A 01/16/97