MOTOROLA CMOS LOGIC DATA
1
MC14076B
!
The MC14076B 4–Bit Register consists of four D–type flip–flops operating
synchronously from a common clock. OR gated output–disable inputs force
the outputs into a high–impedance state for use in bus organized systems.
OR gated data–disable inputs cause the Q outputs to be fed back to the D
inputs of the flip–flops. Thus they are inhibited from changing state while the
clocking process remains u ndisturbed. An asynchronous master root is
provided to clear all four flip–flops simultaneously independent of the clock
or disable inputs.
• Three–State Outputs with Gated Control Lines
• Fully Independent Clock Allows Unrestricted Operation for the Two
Modes: Parallel Load and Do Nothing
• Asynchronous Master Reset
• Four Bus Buffer Registers
• Supply Voltage Range = 3.0 Vdc to 18 Vdc
• 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
)
Input or Output Voltage (DC or Transient)
Input or Output Current (DC or Transient),
per Pin
Power Dissipation, per Package†
Lead Temperature (8–Second Soldering)
_
C
*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
FUNCTION TABLE
Inputs
1 X X X X 0
0 0 X X X Q
n
0 1 X X Q
n
0 X 1 X Q
n
0 0 0 0 0
0 0 0 1 1
When either output disable A or B (or both) is (are) high the
output is disabled to the high–impedance state; however
sequential operation of the flip–flops is not affected.
X = Don’t Care.
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
BLOCK DIAGRAM
15
14
13
12
11
10
9
7
2
1
3
4
5
6
RESET
D0
D1
D2
D3
B
A
CLOCK
B
A
DATA
DISABLE
OUTPUT
DISABLE
VDD = PIN 16
VSS = PIN 8
Q0
Q1
Q2
Q3
MOTOROLA CMOS LOGIC DATAMC14076B
2
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 = (0.75 µA/kHz) f + I
DD
IT = (1.50 µA/kHz) f + I
DD
IT = (2.25 µA/kHz) f + I
DD
Three–State 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 = 0.002.