MOTOROLA CMOS LOGIC DATAMC14043B MC14044B
162
Quad R–S Latches
The MC14043B and MC14044B quad R–S latches are constructed with
MOS P–channel and N–channel enhancement mode devices in a single
monolithic structure. Each latch has an independent Q output and set and
reset inputs. The Q outputs are gated through three–state buffers having a
common enable input. The outputs are enabled with a logical “1” or high on
the enable input; a logical “0” or low d isconnects the latch from the Q
outputs, resulting in an open circuit at the Q outputs.
• Double Diode Input Protection
• Three–State Outputs with Common Enable
• Outputs Capable of Driving Two Low–power TTL Loads or One Low–
Power Schottky TTL Load Over the Rated Temperature Range
• Supply Voltage Range = 3.0 Vdc to 18 Vdc
MC14043B
TRUTH TABLE
X = Don’t Care
MC14044B
S R E Q
High
Impedance
X X 0
No Change
0
1
1
0
0
1
1
0
1
0
1
1
1
1
1
TRUTH TABLE
X = Don’t Care
S R E Q
High
Impedance
X X 0
0
1
0
No Change
0
0
1
1
0
1
0
1
1
1
1
1
ENABLE
R3
S3
R2
S2
R1
S1
R0
S0
4
3
6
7
12
11
14
15
5
Q3
Q2
Q1
Q0
2
9
10
1
ENABLE
S3
R3
S2
R2
S1
R1
S0
R0
4
3
6
7
12
11
14
15
5
Q3
Q2
Q1
Q0
13
9
10
1
VDD = PIN 16
VSS = PIN 8
NC = PIN 2
VDD = PIN 16
VSS = PIN 8
NC = PIN 13
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1995
REV 3
1/94
L SUFFIX
CERAMIC
CASE 620
ORDERING INFORMATION
MC14XXXBCP Plastic
MC14XXXBCL Ceramic
MC14XXXBD SOIC
TA = – 55° to 125°C for all packages.
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
MOTOROLA CMOS LOGIC DATA
163
MC14043B MC14044B
ELECTRICAL CHARACTERISTICS (Voltages Referenced to V
SS
)
“1” Level
Vin = 0 or V
DD
“0” Level
(VO = 4.5 or 0.5 Vdc)
(VO = 9.0 or 1.0 Vdc)
(VO = 13.5 or 1.5 Vdc)
“1” Level
(VO = 0.5 or 4.5 Vdc)
(VO = 1.0 or 9.0 Vdc)
(VO = 1.5 or 13.5 Vdc)
Output Drive Current
(VOH = 2.5 Vdc) Source
(VOH = 4.6 Vdc)
(VOH = 9.5 Vdc)
(VOH = 13.5 Vdc)
– 4.2
– 0.88
– 2.25
– 8.8
(VOL = 0.4 Vdc) Sink
(VOL = 0.5 Vdc)
(VOL = 1.5 Vdc)
Input Capacitance
(Vin = 0)
Quiescent Current
(Per Package)
Total Supply Current**†
(Dynamic plus Quiescent,
Per Package)
(CL = 50 pF on all outputs all
buffers switching)
IT = (0.58 µA/kHz) f + I
DD
IT = (1.15 µA/kHz) f + I
DD
IT = (1.73 µA/kHz) f + I
DD
Three–State Output Leakage
Current
µAdc
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
**The formulas given are for the typical characteristics only at 25_C.
†To calculate total supply current at loads other than 50 pF:
IT(CL) = IT(50 pF) + (CL – 50) Vfk
where: IT is in µA (per package), CL in pF, V = (VDD – VSS) in volts, f in kHz is input frequency, and k = 0.004.
*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