I found these in my father's stuff. They look to be unused, which is not unusual. He often bought stuff
and never got around to using it
I understand that PDIP(ackaging) is susceptible to moisture. These were boxed in their anti-static tubes
and stored in a dry cool basement. I will ship these in the anti-static tube.
|
This from ALLDATASHEET dot com The MC14511B 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 = 3.0 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
• Pb−Free Packages are Available* |