MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

2–261

REV 5

3/93

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%

improv ement in propagation delay, and no inc r eas es in power–

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

Symbol

Rating

Unit

Power Supply (VCC = 0)

VEE

–8.0 to 0

Vdc

Input Voltage (VCC = 0)

VI

0 to VEE

Vdc

Output Current — Continuous

— Surge

Iout

50

100

mA

Operating Temperature Range

TA

0 to +75

°C

Storage Temperature Range — Plastic

— Ceramic

Tstg

–55 to +150

–55 to +165

°C

ELECTRICAL CHARACTERISTICS (VEE = –5.2 V ±5%) (See Note)

0

°

25

°

75

°

Characteristic

Symbol

Min

Max

Min

Max

Min

Max

Unit

Power Supply Current

IE

—

144

—

131

—

144

mA

Input Current High

Pin 4

Data Inputs

IinH

—

—

510

600

—

—

320

370

—

—

320

370

µAdc

Input Current Low

IinL

0.5

—

0.5

—

0.3

—

µA

High Output Voltage

VOH

–1.02

–0.84

–0.98

–0.81

–0.92

–0.735

Vdc

Low Output Voltage

VOL

–1.95

–1.63

–1.95

–1.63

–1.95

–1.60

Vdc

High Input Voltage

VIH

–1.17

–0.84

–1.13

–0.81

–1.07

–0.735

Vdc

Low Input Voltage

VIL

–1.95

–1.48

–1.95

–1.48

–1.95

–1.45

Vdc

AC PARAMETERS

Propagation Delay

Data Input

→ Output

Clock Input

→ Output

tpd

0.7

0.7

3.4

2.2

0.7

0.7

3.4

2.2

0.7

0.7

3.4

2.2

ns

Set–up Time

tset

3.0

—

3.0

—

3.0

—

ns

Hold Time

thold

0.5

—

0.5

—

0.5

—

ns

Rise Time

tr

0.5

2.4

0.5

2.4

0.5

2.4

ns

Fall Time

tf

0.5

2.4

0.5

2.4

0.5

2.4

ns

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

DIP

PIN ASSIGNMENT

VCC1

Q1

Q0

CLOCK

D0

D7

D1

VEE

VCC2

Q2

Q3

D2

D5

D4

D3

D6

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

TRUTH TABLE

DATA INPUTS

OUTPUTS

D0

H

L

L

L

L

L

L

L

L

D1

X

H

L

L

L

L

L

L

L

D2

X

X

H

L

L

L

L

L

L

D3

X

X

X

H

L

L

L

L

L

D4

X

X

X

X

H

L

L

L

L

D5

X

X

X

X

X

H

L

L

L

D6

X

X

X

X

X

X

H

L

L

D7

X

X

X

X

X

X

X

H

L

Q3

H

H

H

H

H

H

H

H

L

Q2

L

L

L

L

H

H

H

H

L

Q1

L

L

H

H

L

L

H

H

L

Q0

L

H

L

H

L

H

L

H

L

L SUFFIX

CERAMIC PACKAGE

CASE 620–10

P SUFFIX

PLASTIC PACKAGE

CASE 648–08

FN SUFFIX

PLCC

CASE 775–02

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).