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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Hex Level Shifter for TTL to
CMOS or CMOS to CMOS
The MC14504B is a hex non–inverting level shifter using CMOS
technology. The level shifter will shift a TTL signal to CMOS logic levels for
any CMOS supply voltage between 5 and 15 volts. A control input also
allows interface from CMOS to CMOS at one logic level to another logic
level: Either up or down level translating is accomplished by selection of
power supply levels V DD and V CC . The V CC level sets the input signal levels
while V DD selects the output voltage levels.
UP Translates from a Low to a High Voltage or DOWN Translates from
a High to a Low Voltage
Input Threshold Can Be Shifted for TTL Compatibility
No Sequencing Required on Power Supplies or Inputs for Power Up or
Power Down
3 to 18 Vdc Operation for V DD and V CC
Diode Protected Inputs to V SS
Capable of Driving Two Low–Power TTL Loads or One Low–Power
Schottky TTL Load Over the Rated Temperature Range
V CC
INPUT
MODE
MODE SELECT
Mode Select
1 (V CC )
0 (V SS )
1/6 of package shown.
MOTOROLA CMOS LOGIC DATA
LOGIC DIAGRAM
V DD
LEVEL
SHIFTER
TTL/CMOS
Input Logic
Output Logic
Levels
Levels
TTL
CMOS
CMOS
CMOS
MC14504B
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBD
T A = – 55 to 125 C for all packages.
PIN ASSIGNMENT
V CC
A out
A in
OUTPUT
B out
B in
C out
C in
V SS
This device contains circuitry to protect
the inputs against damage due to high static
voltages or electric fields referenced to the
V SS pin, only. Extra precautions must be
taken to avoid applications of any voltage
higher than maximum rated voltages to this
high–impedance circuit. For proper opera-
tion, the ranges V SS
v
v
V out
V DD are recommended.
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.
L SUFFIX
CERAMIC
CASE 620
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
Plastic
Ceramic
SOIC
1
16
V DD
2
15
F out
3
14
F in
4
13
MODE
5
12
E out
6
11
E in
7
10
D out
8
9
D in
v
v
V in
18 V and V SS
MC14504B
6–235
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