100344  Product Folder

The 100344 contains eight D-type latches, individual inputs (D_n), outputs (Q_n), a common enable pin (E#), latch enable (LE#), and output enable pin (OEN#). A Q output follows its D input when both E# and LE# are LOW. When either E# or LE# (or both) are HIGH, a latch stores the last valid data present on its D input prior to E# or LE# going HIGH.

A HIGH on OEN# holds the outputs in a cut-off state. The cut-off state is designed to be more negative than a normal ECL LOW level. This allows the output emitter-followers to turn off when the termination supply is -2.0V, presenting a high impedance to the data bus. This high impedance reduces termination power and prevents loss of low state noise margin when several loads share the bus.

The 100344 outputs are designed to drive a doubly terminated 50 Ohm transmission line (25 Ohm load impedance). All inputs have 50 k Ohm pull-down resistors.

• Cut-off drivers
• Drives 25 Ohm load
• Low power operation
• 2000V ESD protection
• Voltage compensated operating range = -4.2V to -5.7V
• Available to MIL-STD-883