The HD74HC573TELL is a high-speed CMOS octal D-type transparent latch manufactured by Renesas Electronics America. This device features three-state outputs designed for use in high-performance memory systems, data buffering, and address latching applications.

Applications

• Memory systems
• Data buffering
• Address latching
• Microprocessor systems
• Peripheral control

Features

• High-speed operation: tpd = 13ns (typ.) at VCC = 5V
• Low power dissipation: ICC = 4μA (max.) at Ta = 25°C
• High noise immunity: VNIH = VNIL = 28% VCC (min.)
• Output drive capability: 15 LSTTL loads
• Symmetrical output impedance: |IOH| = IOL = 6mA (min.)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 2V to 6V
• Pin and function compatible with 74LS573

Benefits

• Improved system performance due to high-speed operation.
• Reduced power consumption contributes to energy efficiency.
• Reliable operation in noisy environments due to high noise immunity.
• High fan-out capability allows driving multiple devices.
• Simplified system design due to symmetrical output impedance.
• Predictable timing behavior due to balanced propagation delays.
• Versatile operation in various voltage environments.
• Easy replacement of older LS TTL devices.

Additional Details

The HD74HC573TELL features an Output Enable (OE) input that controls the three-state outputs. When OE is high, the outputs are in the high-impedance state, allowing multiple devices to share a common bus. When OE is low, the outputs reflect the data stored in the latches. The Latch Enable (LE) input controls the latching operation. When LE is high, the outputs follow the data inputs. When LE transitions low, the data present at the inputs is latched and held until LE is brought high again. The device is available in a small outline package (SOP).

The operating temperature range is -40°C to +85°C.