MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Triple 4-3-3-Input Bus Driver
The MC10H123 is a triple 4±3±3±Input Bus Driver.
The MC10H123 consists of three NOR gates designed for bus driving applications on card or between cards. Output low logic levels are specified with VOL = ±2.1 Vdc so that the bus may be terminated to ±2.0 Vdc. The gate output, when low, appears as a high impedance to the bus, because the output emitter±followers of the MC10H123 are ªturned±off.º This eliminates discontinuities in the characteristic impedance of the bus.
The VOH level is specified when driving a 25±ohm load terminated to ±2.0 Vdc, the equivalent of a 50±ohm bus terminated at both ends. Although 25 ohms is the lowest characteristic impedance that can be driven by the MC10H123, higher impedance values may be used with this part. A typical 50±ohm bus is shown in Figure 1.
•Propagation Delay, 1.5 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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°C |
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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 |
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Min |
Max |
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Min |
Max |
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Unit |
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Power Supply Current |
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IE |
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60 |
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Ð |
56 |
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Ð |
60 |
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mA |
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Input Current High |
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IinH |
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495 |
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Ð |
310 |
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Ð |
310 |
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μA |
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Input Current Low |
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IinL |
0.5 |
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0.5 |
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0.3 |
Ð |
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μA |
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High Output Voltage |
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VOH |
±1.02 |
±0.84 |
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±0.98 |
±0.81 |
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±0.92 |
±0.735 |
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Vdc |
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Low Output Voltage |
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VOL |
±2.1 |
±2.03 |
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±2.1 |
±2.03 |
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±2.1 |
±2.03 |
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Vdc |
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High Input Voltage |
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VIH |
±1.17 |
±0.84 |
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±1.13 |
±0.81 |
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±1.07 |
±0.735 |
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Vdc |
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Low Input Voltage |
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VIL |
±1.95 |
±1.48 |
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±1.95 |
±1.48 |
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±1.95 |
±1.45 |
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Vdc |
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AC PARAMETERS |
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Propagation Delay |
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tpd |
0.7 |
1.5 |
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0.7 |
1.6 |
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0.7 |
1.7 |
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Rise Time |
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tr |
0.7 |
1.6 |
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0.7 |
1.7 |
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0.7 |
1.8 |
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Fall Time |
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tf |
0.7 |
1.6 |
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0.7 |
1.7 |
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0.7 |
1.8 |
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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 ±2.1 volts.
MC10H123
L SUFFIX
CERAMIC PACKAGE
CASE 620±10
P SUFFIX
PLASTIC PACKAGE
CASE 648±08
FN SUFFIX
PLCC
CASE 775±02
LOGIC DIAGRAM
4
5
6 |
3 |
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7 |
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9 |
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10 |
2 |
11 |
VCC1 = PIN 1 |
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VCC2 = PIN 16 |
12 |
VEE = PIN 8 |
13 
15 14 
DIP
PIN ASSIGNMENT
VCC1 |
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1 |
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16 |
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VCC2 |
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BOUT |
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2 |
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15 |
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COUT |
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CIN |
AOUT |
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3 |
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14 |
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AIN |
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4 |
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13 |
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CIN |
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AIN |
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5 |
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12 |
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CIN |
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AIN |
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6 |
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11 |
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BIN |
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AIN |
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7 |
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10 |
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BIN |
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VEE |
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8 |
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9 |
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BIN |
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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±41 |
REV 5 |
MC10H123
FIGURE 1 Ð 50±OHM BUS DRIVER (25±OHM LOAD)
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1/3 MC10H123 |
1/3 MC10H123 |
1/3 MC10H123 |
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ZO = 50 |
Ω |
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50 Ω |
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50 Ω |
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±2.0 |
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RECEIVERS (MECL GATES) |
±2.0 |
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VDC |
VDC |
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MOTOROLA |
2±42 |
MECL Data |
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DL122 Ð Rev 6 |
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