SN74CBT3257CRGYR

On Time (Max) :
Off Time (Max) :
Supply Current :
Maximum Power Dissipation :
Number of Channels :
On Resistance (Max) :
Supply Voltage - Max : 5.5 V
Supply Voltage - Min : 4 V
Maximum Operating Temperature : + 85 C
Minimum Operating Temperature : - 40 C
Packaging : Reel
Package / Case : QFN-16
Propagation Delay Time : 0.24 ns


Features:

` Undershoot Protection for Off-Isolation on A and B Ports Up To −2 V
` Bidirectional Data Flow, With Near-Zero Propagation Delay
` Low ON-State Resistance (ron) Characteristics (ron = 3 Typical)
` Low Input/Output Capacitance Minimizes Loading and Signal Distortion
    (Cio(OFF) = 5.5 pF Typical)
` Data and Control Inputs Provide Undershoot Clamp Diodes
` Low Power Consumption
    (I_CC = 3 A Max)
` V<sub>CC</sub> Operating Range From 4 V to 5.5 V
` Data I/Os Support 0 to 5-V Signaling Levels
    (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)
` Control Inputs Can be Driven by TTL or 5-V/3.3-V CMOS Outputs
` Ioff Supports Partial-Power-Down Mode Operation
` Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
` ESD Performance Tested Per JESD 22
   − 2000-V Human-Body Model
       (A114-B, Class II)
   − 1000-V Charged-Device Model (C101)
` Supports I2C Bus Expansion
` Supports Both Digital and Analog
    Applications: USB Interface, Bus Isolation,Low-Distortion Signal Gating


Pinout




Specifications

Supply voltage range, V_CC ............................................................−0.5 V to 7 V
Control input voltage range, V_IN (see Notes 1 and 2).....................−0.5 V to 7 V
Switch I/O voltage range, V_I/O (see Notes 1, 2, and 3) ................ −0.5 V to 7 V
Control input clamp current, I_IK (V_IN < 0) .............................................. −50 mA
I/O port clamp current, II/OK (V_I/O < 0) .................................................. −50 mA
ON-state switch current, I_I/O (see Note 4) ............................................±128 mA
Continuous current through V_CC or GND terminals ................................ ±100 mA
Package thermal impedance, JA (see Note 5): D package ..................... 73°C/W
                                                    (see Note 5): DB package .................... 82°C/W
                                                    (see Note 5): DBQ package ................. 90°C/W
                                                    (see Note 5): PW package.................. 108°C/W
                                                    (see Note 6): RGY package .................. 39°C/W
Storage temperature range, T_stg................................................−65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltages are with respect to ground unless otherwise specified.
             2. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
             3. V_I and V_O are used to denote specific conditions for V_I/O.
             4. I_I and I_O are used to denote specific conditions for I_I/O.
             5. The package thermal impedance is calculated in accordance with JESD 51-7.
             6. The package thermal impedance is calculated in accordance with JESD 51-5.

Description

The SN74CBT3257CRGYR is a high-speed TTL-compatible FET multiplexer/demultiplexer with low ON-state resistance (r_on), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT3257C provides protection for undershoot up to −2 V by sensing an undershoot event
and ensuring that the switch remains in the proper OFF state.

The SN74CBT3257CRGYR is a 4-bit 1-of-2 multiplexer/demultiplexer with a single output-enable (OE) input. The select (S) input controls the data path of the multiplexer/demultiplexer. WhenOEis low, the multiplexer/demultiplexer is enabled and the A port is connected to the B port, allowing bidirectional data flow between ports. WhenOEis high, the multiplexer/demultiplexer is disabled and a high-impedance state exists between the A and B ports.

This SN74CBT3257CRGYR is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off. To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Parameters:

Technical/Catalog Information	SN74CBT3257CRGYR
Vendor	Texas Instruments (VA)
Category	Integrated Circuits (ICs)
Circuit	4 x 1:2
Independent Circuits	1
Mounting Type	Surface Mount
Current - Output High, Low	15mA, 64mA
Package / Case	16-VQFN
Packaging	Cut Tape (CT)
Type	FET Multiplexer/Demux
Voltage Supply Source	Single Supply
Operating Temperature	-40°C ~ 85°C
Voltage - Supply	4.5 V ~ 5.5 V
Drawing Number	296; 4203539-3; RGY; 16
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	SN74CBT3257CRGYR SN74CBT3257CRGYR 296 19212 1 ND 296192121ND 296-19212-1