TIL306 Datasheet, PDF (2/9 Pages) Texas Instruments – NUMERIC DISPLAYS WITH LOGIC

logic diagram
Count _SCEI
Enable _PCEI
Inputs
CLK
Latch Outputs
MAX-COUNT ^{QA QC}
QB _QD
QA
T
QA
VCC
To Logic Chip
QB
T
QB
QC
T
QC
QD
T
QD
CLR
BI
LS
RBI
Synchronous BCD counter, 4-bit latch, decoder/driver, seven-segment LED display with decimal point
DP
RBO
a
f
b
g
e
c
d
dp
TL306 has left decimal.
TL307 has right decimal.