| shape: | SMD |
|---|---|
| Conductive Type: | Standard |
| Application: | Standard Generalized Integrated Circuit |
| Type: | Quad 2-Input Multiplexer |
| Operating Voltage: | 1.2V ~ 3.6V |
| Number of Pins: | 16 |
| Samples: |
|---|
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The 74LVC257A is a high-performance, low-power, low-voltage,Si-gate CMOS device and superior to most advanced CMOS
compatible TTL families.Inputs can be driven from either 3.3V or 5.0V devices. In 3-State operation, outputs can handle 5V. This feature allows the use of these devices as translators in a mixed 3.3V/5V environment.The 74LVC257A is a quad 2-input multiplexer with 3-state outputs,which select 4 bits of data from two sources and are controlled by a common data select input (S). The data inputs from source 0 (1l0 to 4l0) are selected when input S is LOW and the data inputs from source 1 (1l1 to 4l1) are
selected when S in HIGH. Data appears at the outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs.
The 74LVC257A is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to S. The outputs are forced to a high impedance OFF-state when OE is HIGH.
1.Pin diagram:
2.Recommended Opearating Conditions and Absolute Maximum Ratings:
3.DC Electrical Characteristics:
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
4.AC Characteristics:
GND = 0 V; tr = tf 2.5 ns; CL = 50 pF; RL = 500Ω; Tamb = -40°C to +85°C
• 5 V tolerant inputs/outputs, for interfacing with 5 V logic
• Wide supply voltage range from 1.2 V to 3.6 V
• CMOS low-power consumption
• Direct interface with TTL levels
• Output drive capability 50Ω transmission lines at 85 °C
• Complies with JEDEC standard:
JESD8-7A (1.65 V to 1.95 V)
JESD8-5A (2.3 V to 2.7 V)
JESD8-C/JESD36 (2.7 V to 3.6 V)
• ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115B exceeds 200 V
• CDM JESD22-C101E exceeds 1000 V
• Specified from -40°C to +85°C and -40°C to +125°C
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advantage:
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(noted:Not bear any fee and tax of the transportation cost.)
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