MC14513B Datasheet, PDF (1/9 Pages) ON Semiconductor – BCD-To-Seven Segment Latch/Decoder/Driver

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MC14513B
BCD-To-Seven Segment
Latch/Decoder/Driver
CMOS MSI (Low–Power Complementary MOS)
L SUFFIX
CERAMIC
CASE 726
The MC14513B 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 has 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. The Ripple Blanking Input (RBI) and Ripple Blanking Output
(RBO) can be used to suppress either leading or trailing zeroes. 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.
• Low Logic Circuit Power Dissipation
• High–current Sourcing Outputs (Up to 25 mA)
• Latch Storage of Binary Input
• Blanking Input
• Lamp Test Provision
• Readout Blanking on all Illegal Input Combinations
• Lamp Intensity Modulation Capability
• Time Share (Multiplexing) Capability
• Adds Ripple Blanking In, Ripple Blanking Out to MC14511B
• Supply Voltage Range = 3.0 V to 18 V
• Capable of Driving Two Low–Power TTL Loads, One Low–power
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Schottky TTL Load to Two HTL Loads Over the Rated Temperature}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Range.
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{MAXIMUM RATINGS* (Voltages Referenced to VSS)}
Rating
Symbol
Value
Unit
DC Supply Voltage
Input Voltage, All Inputs
DC Current Drain per Input Pin
VDD
Vin
I
– 0.5 to + 18
V
– 0.5 to VDD + 0.5 V
10
mA
Operating Temperature Range
TA
– 55 to + 125
°C
Power Dissipation, per Package†
PD
500
mW
Storage Temperature Range
Tstg
– 65 to + 150
_C
Maximum Continuous Output Drive Current IOHmax
25
mA
(Source) per Output
Maximum Continuous Output Power
POHmax
50
mW
(Source) per Output ‡
‡POHmax = IOH (VDD – VOH)
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C
Ceramic “L” Packages: – 12 mW/_C From 100_C To 125_C
P SUFFIX
PLASTIC
CASE 707
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
Plastic
Ceramic
TA = – 55° to 125°C for all packages.
PIN ASSIGNMENT
B1
C2
18 VDD
17 f
LT 3
16 g
BI 4
15 a
LE 5
14 b
D6
13 c
A7
12 d
RBI ⁸
VSS 9
11 e
10 RBO
DISPLAY
a
f gb
e
c
d
012 345 6789
TRUTH TABLE
Inputs
Outputs
RBI LE BI LT D C B A RBO a b c d e f g Display
X X X 0 XXXX + 1 1 1 1 1 1 1 8
X X 0 1 X X X X + 0 0 0 0 0 0 0 Blank
1 0 1 1 0 0 0 0 1 0 0 0 0 0 0 0 Blank
0 0 1 1 0000 0 1111110 0
X 0 1 1 00 01 0 0110000 1
X 0 1 1 0010 0 1101101 2
X 0 1 1 0011 0 1111001 3
X 0 1 1 0100 0 0110011 4
X 0 1 1 0101 0 1011011 5
X 0 1 1 0110 0 0101111 6
X 0 1 1 0111 0 1110000 7
X 0 1 1 1000 0 1111111 8
X 0 1 1 1001 0 1111011 9
X 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 Blank
X 0 1 1 1 0 1 1 0 0 0 0 0 0 0 0 Blank
X 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 Blank
X 0 1 1 1 1 0 1 0 0 0 0 0 0 0 0 Blank
X 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 Blank
X 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 Blank
X 1 1 1 XXX X †
*
*
X = Don’t Care
†RBO = RBI (D C B A), indicated by other rows of table
*Depends upon the BCD code previously applied when LE = 0
REV 3
1/94
©_MM_Cot₁or₄o₅la₁, I₃n_Bc. 1995
376
MOTOROLA CMOS LOGIC DATA