MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
8-Input Priority Encoder
The MC10H165 is an 8±Input Priority Encoder. This 10H part is a functional/pinout duplication of the standard MECL 10K family part, with 100% i m p r o v e m e n t i n p r o p a g a t i o n d e l a y, a n d n o i n c r e a s e s i n p o w e r ± supply current.
•Propagation Delay, Data±to±Output, 2.2 ns Typical
•Improved Noise Margin 150 mV (Over Operating Voltage and Temperature Range)
•Voltage Compensated
•MECL 10K±Compatible
MAXIMUM RATINGS
Characteristic |
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Symbol |
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Rating |
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Unit |
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Power Supply (VCC = 0) |
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VEE |
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±8.0 to 0 |
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Vdc |
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Input Voltage (VCC = 0) |
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VI |
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0 to VEE |
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Vdc |
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Output Current Ð Continuous |
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Iout |
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50 |
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mA |
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Ð Surge |
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100 |
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Operating Temperature Range |
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TA |
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0 to +75 |
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°C |
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Storage Temperature Range Ð Plastic |
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Tstg |
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±55 to +150 |
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°C |
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Ð Ceramic |
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±55 to +165 |
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ELECTRICAL CHARACTERISTICS (VEE = ±5.2 V ±5%) (See Note) |
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0° |
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25° |
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75° |
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Characteristic |
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Symbol |
Min |
Max |
Min |
Max |
Min |
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Max |
Unit |
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Power Supply Current |
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IE |
Ð |
144 |
Ð |
131 |
Ð |
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144 |
mA |
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Input Current High |
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IinH |
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mAdc |
Pin 4 |
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Ð |
510 |
Ð |
320 |
Ð |
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320 |
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Data Inputs |
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Ð |
600 |
Ð |
370 |
Ð |
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370 |
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Input Current Low |
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IinL |
0.5 |
Ð |
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0.5 |
Ð |
0.3 |
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Ð |
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mA |
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High Output Voltage |
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VOH |
±1.02 |
±0.84 |
±0.98 |
±0.81 |
±0.92 |
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±0.735 |
Vdc |
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Low Output Voltage |
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VOL |
±1.95 |
±1.63 |
±1.95 |
±1.63 |
±1.95 |
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±1.60 |
Vdc |
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High Input Voltage |
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VIH |
±1.17 |
±0.84 |
±1.13 |
±0.81 |
±1.07 |
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±0.735 |
Vdc |
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Low Input Voltage |
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VIL |
±1.95 |
±1.48 |
±1.95 |
±1.48 |
±1.95 |
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±1.45 |
Vdc |
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AC PARAMETERS |
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Propagation Delay |
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tpd |
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ns |
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Data Input → Output |
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0.7 |
3.4 |
0.7 |
3.4 |
0.7 |
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3.4 |
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Clock Input → Output |
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0.7 |
2.2 |
0.7 |
2.2 |
0.7 |
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2.2 |
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Set±up Time |
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tset |
3.0 |
Ð |
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3.0 |
Ð |
3.0 |
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Ð |
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ns |
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Hold Time |
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thold |
0.5 |
Ð |
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0.5 |
Ð |
0.5 |
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Ð |
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ns |
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Rise Time |
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tr |
0.5 |
2.4 |
0.5 |
2.4 |
0.5 |
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2.4 |
ns |
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Fall Time |
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tf |
0.5 |
2.4 |
0.5 |
2.4 |
0.5 |
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2.4 |
ns |
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NOTE:
Each MECL 10H series circuit has been designed to meet the dc specifications shown in the test table, after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and transverse air flow greater than 500 Ifpm is maintained. Outputs are terminated through a 50±ohm resistor to ±2.0 volts.
MC10H165
L SUFFIX
CERAMIC PACKAGE
CASE 620±10
P SUFFIX
PLASTIC PACKAGE
CASE 648±08
FN SUFFIX
PLCC
CASE 775±02
TRUTH TABLE
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DATA INPUTS |
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OUTPUTS |
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D0 |
D1 |
D2 |
D3 |
D4 |
D5 |
D6 |
D7 |
Q3 |
Q2 |
Q1 |
Q0 |
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H |
X |
X |
X |
X |
X |
X |
X |
H |
L |
L |
L |
L |
H |
X |
X |
X |
X |
X |
X |
H |
L |
L |
H |
L |
L |
H |
X |
X |
X |
X |
X |
H |
L |
H |
L |
L |
L |
L |
H |
X |
X |
X |
X |
H |
L |
H |
H |
L |
L |
L |
L |
H |
X |
X |
X |
H |
H |
L |
L |
L |
L |
L |
L |
L |
H |
X |
X |
H |
H |
L |
H |
L |
L |
L |
L |
L |
L |
H |
X |
H |
H |
H |
L |
L |
L |
L |
L |
L |
L |
L |
H |
H |
H |
H |
H |
L |
L |
L |
L |
L |
L |
L |
L |
L |
L |
L |
L |
DIP
PIN ASSIGNMENT
VCC1 |
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1 |
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16 |
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VCC2 |
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Q1 |
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2 |
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15 |
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Q2 |
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Q0 |
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3 |
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14 |
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Q3 |
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CLOCK |
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4 |
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13 |
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D2 |
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D0 |
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5 |
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12 |
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D5 |
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D7 |
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6 |
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11 |
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D4 |
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D1 |
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7 |
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10 |
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D3 |
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VEE |
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8 |
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9 |
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D6 |
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Pin assignment is for Dual±in±Line Package. For PLCC pin assignment, see the Pin Conversion Tables on page 6±11 of the Motorola MECL Data Book (DL122/D).
3/93
Motorola, Inc. 1996 |
2±261 |
REV 5 |
MC10H165
8±INPUT PRIORITY ENCODER
The MC10H165 is a device designed to encode eight inputs to a binary coded output. The output code is that of the highest order input. Any input of lower priority is ignored. Each output incorporates a latch allowing synchronous operation. When the clock is low the outputs follow the inputs and latch when the clock goes high. This device is very useful for a variety of applications in checking system status in control processors, peripheral
controllers, and testing systems.
The input is active when high, (e.g., the three binary outputs are low when input D0 is high). The Q3 output is high when any input is high. This allows direct extension into another priority encoder when more than eight inputs are necessary. The MC10H165 can also be used to develop binary codes from random logic inputs, for addressing ROMs, RAMs, or for multiplexing data.
LOGIC DIAGRAM
C 4 |
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VCC1 |
= |
PIN 1 |
D0 5 |
VCC2 |
= |
PIN 16 |
. VEE |
= |
PIN 8 |
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D1 7 |
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3 Q0
D2 13
D3 10
D4 11
2 Q1
D5 12
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15 Q2 |
D6 9 |
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D7 6 |
14 Q3 |
Numbers at ends of terminals denote pin numbers for L and P packages. |
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MOTOROLA |
2±262 |
MECL Data |
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DL122 Ð Rev 6 |
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