PI74FCT2245T 查看數據表（PDF） - Pericom Semiconductor
零件编号
产品描述 (功能)
生产厂家
PI74FCT2245T Datasheet PDF : 4 Pages
| |||
PI74FCT245T/640T/645T
25 Ohm Series PI74FCT2245T/2640T/2645T
1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122O334455c66t77a8899l 00B1122i33d44i55r6677e88c99t00i11o2233n44a5566l77T8899r00a1122n1122s33c44e55i66v7788e99r00s1122
Power Supply Characteristics
Parameters Description
ICC
Quiescent Power
Supply Current
∆ICC
Supply Current per
Input @ TTL HIGH
ICCD
Supply Current per
Input per MHz(4)
IC
Total Power Supply
Current(6)
Test Conditions(1)
VCC = Max.
VIN = GND or VCC
VCC = Max.,
VIN = 3.4V(3)
VCC = Max.,
Outputs Open
OE = GND
T/R = GND or VCC
One Input Toggling
50% Duty Cycle
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
T/R = OE = GND
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
T/R = OE = GND
Eight Bits Toggling
VIN = VCC
VIN = GND
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
Min. Typ(2) Max.
0.1 500
Units
µA
0.5 2.0 mA
0.15 0.25 mA/
MHz
1.5 3.5(5) mA
1.8 4.5(5)
3.0 6.0(5)
5.0 14.0(5)
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
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 + DICC 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.
3
PS2012B 09/22/99
Share Link: 