參數資料
型號: IDT74FCT621ATSOG8
廠商: IDT, Integrated Device Technology Inc
文件頁數: 4/6頁
文件大小: 0K
描述: IC BUS TRANSCVR 8B N-INV 20SOIC
標準包裝: 1
系列: 74FCT
邏輯類型: 收發(fā)器,非反相
元件數: 1
每個元件的位元數: 8
輸出電流高,低: 48mA,48mA; 64mA,64mA
電源電壓: 4.75 V ~ 5.25 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應商設備封裝: 20-SOIC
包裝: 標準包裝
產品目錄頁面: 1257 (CN2011-ZH PDF)
其它名稱: 800-1649-6
INDUSTRIALTEMPERATURERANGE
4
IDT74FCT621T/AT
FASTCMOSOCTALBUSTRANSCEIVER(OPENDRAIN)
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
IDT74FCT621T
IDT74FCT621AT
Symbol
Parameter
Condition(1)
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
Propagation Delay, A to B
CL = 50pF
5.5
13
5.5
12
ns
tPHL
RL = 500
Ω
1.5
8.5
1.5
6.8
tPLH
Propagation Delay, B to A
5.5
12.5
5.5
12
ns
tPHL
1.5
8
1.5
6.4
tPLH
Propagation Delay,
GBA to A
5.5
14
5.5
13
ns
tPHL
1.5
8.5
1.5
6.8
tPLH
Propagation Delay,
GAB to B
5.5
14
5.5
13
ns
tPHL
1.5
8
1.5
6.4
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ΔICC
Quiescent Power Supply Current
VCC = Max.
0.5
2
mA
TTL Inputs HIGH
VIN = 3.4V
(3)
ICCD
Dynamic Power Supply Current
(4)
Vcc = Max.
VIN = VCC
0.15
0.25
mA/MHz
OutputsOpen
VIN = GND
GBA = GAB = GND or VCC
OneInputToggling
50% Duty Cycle
IC
Total Power Supply Current
(6,7)
Vcc = Max.
VIN = VCC
1.5
3.5
mA
OutputsOpen
VIN = GND
GBA = GAB = GND or VCC
One Bit Toggling
VIN = 3.4V
1.8
4.5
at fi =10MHz
VIN = GND
50% Duty Cycle
Vcc = Max.
VIN = VCC
—3
6
(5)
OutputsOpen
VIN = GND
GBA = GAB = GND or VCC
EightBitsToggling
VIN = 3.4V
5
14
(5)
at fi = 2.5MHz
VIN = GND
50% Duty Cycle
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
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 +
ΔICC DHNT + ICCD (fCP/2 + fiNi)
ICC = Quiescent Current
ΔICC = 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 Output 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.
7. This test is performed with outputs tied to GND through a pull-down resistor.
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