参数资料
型号: IDT74FCT3245PGG
厂商: IDT, Integrated Device Technology Inc
文件页数: 4/6页
文件大小: 0K
描述: IC TRANSCVR BI-DIR 8BIT 20TSSOP
标准包装: 74
系列: 74FCT
逻辑功能: 变换器,双向,3 态
位数: 8
输入类型: 电压
输出类型: 电压
通道数: 1
输出/通道数目: 8
差分 - 输入:输出: 无/无
传输延迟(最大): 7ns
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 管件
其它名称: 74FCT3245PGG
INDUSTRIALTEMPERATURERANGE
4
IDT74FCT3245/A
3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVER
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
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
ΔICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC +
ΔICC DHNT + ICCD (fCPNCP/2 + fiNi)
ICC = Quiescent Current (ICC, 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
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ICC
Quiescent Power Supply Current
VCC = Max.
VIN = VCC - 0.6V
2
30
μA
ICCD
Dynamic Power Supply
VCC = Max.
VIN = VCC
—60
85
μA/
Current(4)
Outputs Open
VIN = GND
MHz
OE = DIR = GND
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
VCC = Max.
VIN = VCC
0.6
0.9
mA
Outputs Open
VIN = GND
fI = 10MHz
50% Duty Cycle
VIN = VCC - 0.6V
0.6
0.9
OE = DIR = GND
VIN = GND
One Bit Toggling
VCC = Max.
VIN = VCC
1.2
1.7(5)
Outputs Open
VIN = GND
fI = 2.5MHz
50% Duty Cycle
VIN = VCC - 0.6V
1.2
1.8(5)
OE = DIR = GND
VIN = GND
Eight Bits Toggling
74FCT3245
74FCT3245A
Symbol
Parameter
Condition(2)
Min.(3)
Max.
Min.(3)
Max.
Unit
tPLH
PropagationDelay
CL = 50pF
1.5
7
1.5
4.6
ns
tPHL
A to B, B to A
RL = 500
Ω
tPZH
OutputEnableTime
1.5
9.5
1.5
6.2
ns
tPZL
OE to A or B
tPHZ
OutputDisableTime
1.5
7.5
1.5
5
ns
tPLZ
OE to A or B
tPZH
OutputEnableTime
1.5
9.5
1.5
6.2
ns
tPZL
DIR to A or B(4)
tPHZ
OutputDisableTime
1.5
7.5
1.5
5
ns
tPLZ
DIR to A or B(4)
SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1)
NOTES:
1. Propagation Delays and Enable/Disable times are with VCC = 3.3V ±0.3V, Normal Range. For VCC = 2.7V to 3.6V, Extended Range, all Propagation Delays and Enable/
Disable times should be degraded by 20%.
2. See test circuit and waveforms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not tested.
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