OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS The SN74LV573 is a 3.3-V octal transparent D-type latch manufactured by Texas Instruments (TI).
### **Specifications:**
- **Supply Voltage Range:** 2 V to 5.5 V
- **High-Speed Operation:** tpd = 6.5 ns (max) at 5 V
- **Low Power Consumption:** ICC = 20 µA (max)
- **Output Drive Capability:** ±24 mA at 3.3 V
- **Input Voltage Levels:**
- VIH (High-Level Input Voltage): 2 V (min) at VCC = 3.3 V
- VIL (Low-Level Input Voltage): 0.8 V (max) at VCC = 3.3 V
- **Operating Temperature Range:** -40°C to 85°C
### **Description:**
The SN74LV573 is an octal transparent latch with 3-state outputs. It is designed for 2-V to 5.5-V VCC operation and features high-speed, low-power CMOS technology. The latch allows data to be stored when the latch-enable (LE) input is high, and the outputs follow the data inputs. When LE is low, the outputs hold the last data present before the transition. The output-enable (OE) input controls the 3-state outputs, allowing them to be placed in a high-impedance state when OE is high.
### **Features:**
- **Octal D-Type Transparent Latch** with 3-state outputs
- **Wide Operating Voltage Range:** 2 V to 5.5 V
- **Balanced Propagation Delays:** tPLH ≈ tPHL
- **Low Power Consumption** (20 µA max ICC)
- **Bus-Friendly Inputs and Outputs**
- **ESD Protection** Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)
- **Available in Multiple Packages:** SOIC, TSSOP, PDIP
This device is commonly used in bus interface applications, data storage, and buffering in digital systems.
