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PDF TC74LCX257FT Data sheet ( Hoja de datos )
| Número de pieza | TC74LCX257FT | |
| Descripción | LOW VOLTAGE QUAD 2-CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS | |
| Fabricantes | Toshiba Semiconductor | |
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TC74LCX257F/FN/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX257F,TC74LCX257FN,TC74LCX257FT
Low-Voltage Quad 2-Channel Multiplexer (3-state) with 5-V Tolerant Inputs and Outputs
The TC74LCX257F/FN/FT is a high-performance CMOS
multiplexer. Designed for use in 3.3-V systems, it achieves
high-speed operation while maintaining the CMOS low-power
dissipation.
The device is designed for low-voltage (3.3 V) VCC applications,
but it could be used to interface to 5-V supply environment for
inputs.
It is composed of four independent 2-channel multiplexers with
common select and OE.
If OE is set low, the outputs are held in a high-impedance state.
When SELECT is set low, “A” data inputs are enabled.
Conversely, when SELECT is high, “B” data inputs are enabled.
All inputs are equipped with protection circuits against static
discharge.
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74LCX257F
TC74LCX257FN
Features
· Low-voltage operation: VCC = 2.0 to 3.6 V
· High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V)
· Output current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V)
www.DataSheet4U.com· Latch-up performance: ±500 mA
TC74LCX257FT
· Available in JEDEC SOP, JEITA SOP and TSSOP
· Power-down protection provided on all inputs and outputs
· Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 257 type
Weight
SOP16-P-300-1.27: 0.18 g (typ.)
SOL16-P-150-1.27: 0.12 g (typ.)
TSSOP16-P-0044-0.65: 0.06 g (typ.)
DataSheet4 U .com
1 2002-01-11
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Dynamic Switching Characteristics
(Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 W)
TC74LCX257F/FN/FT
Characteristics
Quiet output maximum
dynamic VOL
Quiet output minimum
dynamic VOL
Symbol
Test Condition
VOLP VIH = 3.3 V, VIL = 0 V
|VOLV| VIH = 3.3 V, VIL = 0 V
Capacitive Characteristics (Ta = 25°C)
Typ.
VCC (V)
3.3 0.8
3.3 0.8
Unit
V
V
Characteristics
Input capacitance
Output capacitance
Power dissipation capacitance
Symbol
CIN
COUT
CPD
fIN = 10 MHz
Test Condition
¾
¾
VCC (V)
3.3
3.3
(Note 11) 3.3
Typ.
7
8
25
Unit
pF
pF
pF
Note 11: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC
AC Test Circuit
Output
Open
Switch
6.0 V
GND
Parameter
Switch
tpLH, tpHL
Open
www.DataSheet4U.comMeasure
tpLZ, tpZL
6.0 V
CL = 50 pF
tpHZ, tpZH
GND
RL = 500 W
AC Waveform
Input
Figure 1
tr 2.5 ns
tf 2.5 ns
90%
1.5 V
10%
Non-Inverting
Output
1.5 V
tpLH
tpHL
Inverting
Output
tpHL
1.5 V
tpLH
2.7 V
GND
VOH
VOL
VOH
VOL
DataSheet4 U .com
Figure 2 tpLH, tpHL
5
2002-01-11
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| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet TC74LCX257FT.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TC74LCX257F | LOW VOLTAGE QUAD 2-CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS | Toshiba Semiconductor |
| TC74LCX257FN | LOW VOLTAGE QUAD 2-CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS | Toshiba Semiconductor |
| TC74LCX257FT | LOW VOLTAGE QUAD 2-CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS | Toshiba Semiconductor |
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