MOTOROLA CMOS LOGIC DATA
1
MC14094B
The MC14094B combines an 8–stage shift register with a data latch for
each stage and a three–state output from each latch.
Data is shifted on the p ositive clock transition and is shifted from the
seventh stage to two serial o utputs. The QS output data is f or use in
high–speed c ascaded systems. The Q′S output data is shifted on the
following negative clock transition for use in low–speed cascaded systems.
Data from each stage of the shift register is latched on the negative
transition of the strobe input. Data propagates through the latch while strobe
is high.
Outputs of the eight data latches are controlled by three–state buffers
which are placed in the high–impedance state by a logic Low on Output
Enable.
• Three–State Outputs
• Capable of Driving Two Low–Power TTL Loads or One Low–Power
Schottky TTL Load Over the Rated Temperature Range
• Input Diode Protection
• Data Latch
• Dual Outputs for Data Out on Both Positive and Negative Clock
Transitions
• Useful for Serial–to–Parallel Data Conversion
• Pin–for–Pin Compatible with CD4094B
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
Parallel Outputs Serial Outputs
Q1 Q
N
QS* Q′
S
0 X X Z Z Q7 No Chg.
0 X X Z Z No Chg. Q7
1 0 X No Chg. No Chg. Q7 No Chg.
1 1 0 0 QN–1 Q7 No Chg.
1 1 1 1 QN–1 Q7 No Chg.
1 1 1 No Chg. No Chg. No Chg. Q7
Z = High Impedance X = Don’t Care
*At the positive clock edge, information in the 7th shift register stage is transferred to
Q8 and QS.
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
13
14
15
16
9
10
11
125
4
3
2
1
8
7
6
Q7
Q6
Q5
OUTPUT
ENABLE
V
DD
Q
S
Q
′
S
Q8
Q1
CLOCK
DATA
STROBE
V
SS
Q4
Q3
Q2
PIN ASSIGNMENT
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 high–impedance circuit. For proper
operation, Vin and V
out
should be constrained
to the range VSS v (Vin or V
out
) v VDD.
Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either V
SS
or VDD). Unused outputs must be left open.
MOTOROLA CMOS LOGIC DATAMC14094B
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 = (4.1 µA/kHz) f + I
DD
IT = (14 µA/kHz) f + I
DD
IT = (140 µA/kHz) f + I
DD
3–State Output Leakage Current
µA
#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 = 0.001.