TC74VCX16843FT

2007-10-19

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74VCX16843FT

Low-Voltage 18-Bit D-Type Latch with 3.6-V Tolerant Inputs and Outputs

The TC74VCX16843FT is a high-performance CMOS 18-bit

D-type latch. Designed for use in 1.8-V, 2.5-V or 3.3-V systems, it

achieves high-speed operation while maintaining the CMOS low

power dissipation.

It is also designed with overvoltage tolerant inputs and outputs

up to 3.6 V.

The TC74VCX16843FT can be used as two 9-bit latches or one

18-bit latch. The 18 latches are transparent D-type latches. The

device has noninverting data (D) inputs and provides true data at

its outputs. While the latch-enable (1LE or 2LE) input is high,

the Q outputs of the corresponding 9-bit latch follow the D inputs.

When LE is taken low, the Q outputs are latched at the levels set

up at the D inputs. CLR and PR are independent of the LE and are accomplished by setting the appropriate input

low. When the OE input is high, the outputs are in a high-impedance state. This device is designed to be used with

3-state memory address drivers, etc.

All inputs are equipped with protection circuits against static discharge.

Features

• High-speed operation

• Latch-up performance: −300 mA

• ESD performance: Machine model ≥ ±200 V

Human body model

≥ ±2000 V

• Package: TSSOP

• 3.6-V tolerant function and power-down protection provided on all inputs and outputs

Weight: 0.25 g (typ.)