7 Detailed Description

7.1 Overview

The SN74LVC1G08B-EP device is a single 2-input positive-AND gate. The device performs the Boolean function

Y = A ● B or Y = A + B in positive logic.

7.2 Functional Block Diagram

Figure 7-1. Logic Diagram (Positive Side)

7.3 Feature Description

7.3.1 Balanced CMOS Push-Pull Outputs

This device includes balanced CMOS push-pull outputs. The term balanced indicates that the device can sink

and source similar currents. The drive capability of this device can create fast edges into light loads, so routing

and load conditions must be considered to prevent ringing. Additionally, the outputs of this device are capable of

driving larger currents than the device can sustain without being damaged. Limit the output power of the device

to avoid damage due to overcurrent. The electrical and thermal limits defined in the Absolute Maximum Ratings

must be followed at all times.

Unused push-pull CMOS outputs must be left disconnected.

7.3.2 CMOS IOs

This device includes CMOS IOs. These pins can be configured as either an input or an output. The output has

the balanced 3-state architecture, and the input has the Schmitt-trigger architecture.

The three states that these outputs can be in are driving high, driving low, and high impedance. The term

balanced indicates that the device can sink and source similar currents. The drive capability of this device

may create fast edges into light loads so routing and load conditions should be considered to prevent ringing.

Additionally, the outputs of this device are capable of driving larger currents than the device can sustain without

being damaged. It is important for the output power of the device to be limited to avoid damage due to

overcurrent. The electrical and thermal limits defined in the Absolute Maximum Ratings must be followed at all

times.

When the pin is configured as an input, the output is placed into a high-impedance state and it will neither source

nor sink current, with the exception of minor leakage current as defined in the Electrical Characteristics table.

In the high-impedance state, the output voltage is not controlled by the device and is dependent on external

factors. If no other drivers are connected to the node, then this is known as a floating node and the voltage is

unknown. Because this pin also includes an input, the voltage should always be defined.

The Schmitt-trigger input architecture provides hysteresis as defined by ΔVT in the Electrical Characteristics

table, which makes this device extremely tolerant to slow or noisy inputs. While the inputs can be driven much

slower than standard CMOS inputs, it is still recommended to properly terminate unused inputs. Driving the

inputs with slow transitioning signals will increase dynamic current consumption of the device. For additional

information regarding Schmitt-trigger inputs, please see Understanding Schmitt Triggers.

Unused transceiver channels should be terminated as shown in Figure 8-2.

SN74LVC1G08B-EP

SLVSLC4 – JUNE 2026

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