MC14518B Datasheet, PDF (1/8 Pages) ON Semiconductor – Dual Up Counters

MC14518B
Dual Up Counters
The MC14518B dual BCD counter and the MC14520B dual binary
counter are constructed with MOS P–channel and N–channel
enhancement mode devices in a single monolithic structure. Each
consists of two identical, independent, internally synchronous 4–stage
counters. The counter stages are type D flip–flops, with
interchangeable Clock and Enable lines for incrementing on either the
positive–going or negative–going transition as required when
cascading multiple stages. Each counter can be cleared by applying a
high level on the Reset line. In addition, the MC14518B will count out
of all undefined states within two clock periods. These complementary
MOS up counters find primary use in multi–stage synchronous or
ripple counting applications requiring low power dissipation and/or
high noise immunity.
• Diode Protection on All Inputs
• Supply Voltage Range = 3.0 Vdc to 18 Vdc
• Internally Synchronous for High Internal and External Speeds
• Logic Edge–Clocked Design — Incremented on Positive Transition
of Clock or Negative Transition on Enable
• Capable of Driving Two Low–power TTL Loads or One Low–power
Schottky TTL Load Over the Rated Temperature Range
MAXIMUM RATINGS (Voltages Referenced to V_SS) (Note 2.)
Symbol
Parameter
Value
Unit
V_DD
DC Supply Voltage Range
– 0.5 to +18.0
V
V_in, V_out Input or Output Voltage Range – 0.5 to V_DD + 0.5
V
(DC or Transient)
I_in, I_out
Input or Output Current
(DC or Transient) per Pin
±10
mA
P_D
Power Dissipation,
per Package (Note 3.)
500
mW
T_A
Operating Temperature Range
– 55 to +125
°C
T_stg
Storage Temperature Range
– 65 to +150
°C
T_L
Lead Temperature
(8–Second Soldering)
260
°C
2. Maximum Ratings are those values beyond which damage to the device
may occur.
3. Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C
This device contains protection circuitry to guard against damage due to high
static voltages or electric fields. However, precautions must be taken to avoid
applications of any voltage higher than maximum rated voltages to this
v v ^{high–impedance circuit. For proper operation, Vin and Vout should be constrained}
to the range V_SS (V_in or V_out) V_DD.
Unused inputs must always be tied to an appropriate logic voltage level (e.g.,
either V_SS or V_DD). Unused outputs must be left open.
http://onsemi.com
PDIP–16
P SUFFIX
CASE 648
MARKING
DIAGRAMS
16
MC14518BCP
AWLYYWW
1
16
SOIC–16
DW SUFFIX
CASE 751G
14518B
AWLYYWW
SOEIAJ–16
F SUFFIX
CASE 966
1
16
MC14518B
AWLYWW
1
A
= Assembly Location
WL or L = Wafer Lot
YY or Y = Year
WW or W = Work Week
ORDERING INFORMATION
Device
Package
Shipping
MC14518BCP
MC14518BDW
PDIP–16
SOIC–16
2000/Box
47/Rail
MC14518BDWR2 SOIC–16 1000/Tape & Reel
MC14518BF
SOEIAJ–16 See Note 1.
MC14518BFEL SOEIAJ–16 See Note 1.
1. For ordering information on the EIAJ version of
the SOIC packages, please contact your local
ON Semiconductor representative.
© Semiconductor Components Industries, LLC, 2000
1
March, 2000 – Rev. 3
Publication Order Number:
MC14518B/D