ON Semiconductor MC14511BDG

Description
The MC14511B BCD-to-seven segment latch/decoder/driver is a monolithic CMOS device with NPN bipolar output drivers. It features a 4-bit storage latch, an 8421 BCD-to-seven segment decoder, and output drive capability. The device includes lamp test, blanking, and latch enable inputs for display testing, brightness modulation, and code storage. It can drive seven-segment displays directly or indirectly, including LEDs, incandescent, fluorescent, gas discharge, and liquid crystal readouts.

Features
Low logic circuit power dissipation
High-current sourcing outputs (up to 25 mA)
Latch storage of code
Blanking input
Lamp test provision
Readout blanking on all illegal input combinations
Lamp intensity modulation capability
Time share (multiplexing) facility
Supply voltage range: 3.0 V to 18 V
Capable of driving two low-power TTL loads, one low-power Schottky TTL load, or two HTL loads over the rated temperature range
Chip complexity: 216 FETs or 54 equivalent gates
Triple diode protection on all inputs

Applications
Instrument display driver (e.g., counter, DVM)
Computer/calculator display driver
Cockpit display driver
Clock, watch, and timer uses