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4-bit bus switch
The 74CBTLV3126-Q100 provides a 4-bit high-speed bus switch with separate output enable inputs (1OE to 4OE). The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The switch is disabled (high-impedance OFF-state) when the output enable (nOE) input is LOW.
To ensure the high-impedance OFF-state during power-up or power-down, nOE should be tied to the GND through a pull-down resistor. The current-sinking capability of the driver determines the minimum value of the resistor.
Schmitt trigger action at control input makes the circuit tolerant to slower input rise and fall times across the entire VCC range from 2.3 V to 3.6 V.
This device is fully specified for partial power-down applications using IOFF. The IOFF circuitry disables the output, preventing the damaging backflow current through the device when it is powered down.
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Supply voltage range from 2.3 V to 3.6 V
Standard ’126’-type pinout
High noise immunity
Complies with JEDEC standard:
JESD8-5 (2.3 V to 2.7 V)
JESD8-B/JESD36 (2.7 V to 3.6 V)
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)
5 Ω switch connection between two ports
Rail to rail switching on data I/O ports
CMOS low power consumption
Latch-up performance exceeds 250 mA per JESD78B Class I level A
IOFF circuitry provides partial Power-down mode operation
DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints
| Type number | Product status | VCC (V) | RON (Ω) | Logic switching levels | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74CBTLV3126BQ-Q100 | Production | 2.3 - 3.6 | 7 | CMOS/LVTTL | 0.2 | very low | -40~125 | 107 | 21.3 | 75 | DHVQFN14 |
| 74CBTLV3126PW-Q100 | Production | 2.3 - 3.6 | 7 | CMOS/LVTTL | 0.2 | very low | -40~125 | 141 | 8.0 | 68 | TSSOP14 |