MC14511

DESCRIPTION

The UTC MC14511 BCD–to–seven segment latch/decoder/driver 

is constructed with complementary MOS (CMOS) enhancement mode 

devices and NPN bipolar output drivers in a single monolithic 

structure. The circuit provides the functions of a 4-bit storage latch, an 

8421 BCD-to-seven segment decoder, and an output drive capability. 

Lamp test ( LT ), blanking (BI ), and latch enable (LE) inputs are used 

to test the display, to turn-off or pulse modulate the brightness of the 

display, and to store a BCD code, respectively. It can be used with 

seven-segment light-emitting diodes (LED), incandescent, fluorescent, 

gas discharge, or liquid crystal readouts either directly or indirectly. 

Applications include instrument (e.g., counter, DVM, etc.) display 

driver, computer/calculator display driver, cockpit display driver, and 

various clock, watch, and timer uses. 

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 = 3.0V ~ 18V 

规格书MC14511