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參數(shù)資料
| 型號(hào)： | PI74LPT244AQ |
| 廠商： | Pericom |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大小： | 0K |
| 描述： | IC BUFFER DVR 8BIT CMOS 20QSOP |
| 產(chǎn)品變化通告： | Product Discontinuation Notice 11/Feb/2008 |
| 標(biāo)準(zhǔn)包裝： | 55 |
| 系列： | 74LPT |
| 邏輯類型： | 緩沖器/線路驅(qū)動(dòng)器，非反相 |
| 元件數(shù)： | 2 |
| 每個(gè)元件的位元數(shù)： | 4 |
| 輸出電流高，低： | 24mA，24mA |
| 電源電壓： | 2.7 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-QSOP |
| 包裝： | 管件 |
PI74LPT244
3.3V 8-Bit Buffer /Line Driver
4
PS2058F
06/05/06
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ(2)
Max.
Units
ICC
Quiescent Power Supply
Current
VCC = Max.
VIN = GND
or VCC
0.1
10
A
ΔICC
Quiescent Power Supply
Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC
– 0.6V(3)
500
A
ICCD
Dynamic Power Supply(4) VCC = Max.,
Outputs Open OEX = GND
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
50
75
A/
MHz
IC
Total Power Supply
Current(6)
VCC = Max., Outputs
Open fI = 10 MHZ
50% Duty Cycle
OEX = GND
One Bit Toggling
VIN = VCC
– 0.6V
VIN = GND
0.6
2.3
mA
VCC = Max., Outputs
Open fI = 2.5 MHZ
50% Duty Cycle
OEX = GND
8 Bits Toggling
VIN = VCC
– 0.6V
VIN = GND
2.1
4.7(5)
mA
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 + ΔICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
ΔICC = 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.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
Description
Test Conditions
Typ
Max.
Units
CIN
Input Capacitance
VIN = 0V
4.5
6
pF
COUT
Output Capacitance
VOUT = 0V
5.5
8
Notes:
1. This parameter is determined by device characterization but is not production tested.
06-0181
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