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74VCX16244 bảng dữ liệu(PDF) 7 Page - STMicroelectronics

tên linh kiện 74VCX16244
Giải thích chi tiết về linh kiện  LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE) WITH 3.6V TOLERANT INPUTS AND OUTPUTS
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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74VCX16244 bảng dữ liệu(HTML) 7 Page - STMicroelectronics

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CAPACITIVE CHARACTERISTICS
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) =CPD xVCC xfIN +ICC/16 (per
circuit)
TEST CIRCUIT
CL = 30 pF or equivalent (includes jig and probe capacitance)
RL =R1 = 500Ω or equivalent
RT =ZOUT of pulse generator (typically 50Ω)
WAVEFORM SYMBOL VALUES
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA =25°C
Min.
Typ.
Max.
CIN
Input Capacitance
1.8, 2.5 or 3.3
VIN = 0 or VCC
6pF
COUT
Output Capacitance
1.8, 2.5 or 3.3
VIN = 0 or VCC
7pF
CPD
Power Dissipation Capacitance
(note 1)
1.8, 2.5 or 3.3
fIN = 10MHz
VIN = 0 or VCC
20
pF
TEST
SWITCH
tPLH,tPHL
Open
tPZL,tPLZ (VCC = 3.0 to 3.6V)
6V
tPZL,tPLZ (VCC = 2.3 to 2.7V or 1.8V)
2VCC
tPZH,tPHZ
GND
Symbol
VCC
3.0 to3.6V
2.3 to 2.7V
1.8V
VIH
2.7V
VCC
VCC
VM
1.5V
VCC/2
VCC/2
VX
VOL + 0.3V
VOL + 0.15V
VOL + 0.15V
VY
VOH - 0.3V
VOH - 0.15V
VOH - 0.15V



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