Overview
The SN74LV541APWRG4 is an octal buffer/driver produced by Texas Instruments, designed for operation over a wide voltage range of 2-V to 5.5-V VCC. This device is part of the SN74LV541A family and is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package). It is ideal for driving bus lines or buffer memory address registers due to its ability to handle mixed-mode voltage operation on all ports. The device features inputs and outputs on opposite sides of the package, facilitating easier printed circuit board layout.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 2 | 5.5 | V | |
| VI (Input Voltage) | -0.5 | 7 | V | |
| VO (Output Voltage Range) | -0.5 | VCC + 0.5 | V | |
| IO (Continuous Output Current) | ±35 | mA | ||
| Tstg (Storage Temperature Range) | -65 | 150 | °C | |
| tpd (Propagation Delay Time, A to Y) | 3.5 | 5 | 6 | ns (at VCC = 5 V, CL = 15 pF) |
| ten (Output Enable Time, OE to Y) | 4.3 | 7.2 | 8.5 | ns (at VCC = 5 V, CL = 15 pF) |
| tdis (Output Disable Time, OE to Y) | 3.9 | 7.5 | 8 | ns (at VCC = 5 V, CL = 15 pF) |
Key Features
- Operation over a wide voltage range of 2-V to 5.5-V VCC.
- Maximum propagation delay time (tpd) of 6 ns at VCC = 5 V.
- Typical output ground bounce (VOLP) less than 0.8 V at VCC = 3.3 V and TA = 25°C.
- Typical output VOH undershoot (VOHV) greater than 2.3 V at VCC = 3.3 V and TA = 25°C.
- Support for mixed-mode voltage operation on all ports.
- Ioff supports partial-power-down mode operation.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 standards (3000-V Human-Body Model, 200-V Machine Model, 2000-V Charged-Device Model).
Applications
- Smart grids
- TVs
- Set-top-boxes
- Audio systems
- Servers
- Surveillance cameras
- Network switches
- Infotainment systems
The SN74LV541A can be used to drive signals over relatively long traces or transmission lines, and it is particularly useful in applications requiring signal integrity and low power consumption.
Q & A
- What is the operating voltage range of the SN74LV541APWRG4?
The SN74LV541APWRG4 operates over a voltage range of 2-V to 5.5-V VCC.
- What is the maximum propagation delay time of the SN74LV541APWRG4 at VCC = 5 V?
The maximum propagation delay time (tpd) is 6 ns at VCC = 5 V.
- What is the typical output ground bounce (VOLP) at VCC = 3.3 V and TA = 25°C?
The typical output ground bounce (VOLP) is less than 0.8 V at VCC = 3.3 V and TA = 25°C.
- Does the SN74LV541APWRG4 support mixed-mode voltage operation?
Yes, the SN74LV541APWRG4 supports mixed-mode voltage operation on all ports.
- What is the latch-up performance of the SN74LV541APWRG4 according to JESD 17?
The latch-up performance exceeds 250 mA per JESD 17.
- What are the ESD protection ratings for the SN74LV541APWRG4?
The ESD protection exceeds JESD 22 standards with 3000-V Human-Body Model, 200-V Machine Model, and 2000-V Charged-Device Model.
- What are some typical applications of the SN74LV541APWRG4?
Typical applications include smart grids, TVs, set-top-boxes, audio systems, servers, surveillance cameras, network switches, and infotainment systems.
- How can signal integrity be improved when using the SN74LV541APWRG4 to drive signals over long traces?
Signal integrity can be improved by using a series damping resistor in series with the transmitter’s output to reduce ringing caused by impedance mismatches.
- What is the maximum load capacitance the SN74LV541APWRG4 can drive while meeting all specifications?
The SN74LV541APWRG4 can drive a load with a total capacitance less than or equal to 50 pF.
- How should the output enable inputs (OE1 and OE2) be managed during power-up or power-down to ensure the high-impedance state?
Both OE inputs should be tied to VCC through a pull-up resistor to ensure the high-impedance state during power-up or power-down.
