Datasheet MC1378FN, MC1378P Datasheet (Motorola)

Order this document by MC1378/D

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The MC1378 is a bipolar composite video overlay encoder and
microcomputer synchronizer. The MC1378 contains the complete encoder
function of the MC1377, i.e., quadrature color modulators, RGB matrix, and
blanking level clamps, plus a complete complement of synchronizers to lock
a microcomputer–based video source to any remote video source. The
MC1378 can be used as a local system timing and encoding source, but it is
most valuable when used to lock the microcomputer source to a remotely
originated video signal.

• Contains All Needed Reference Oscillators

• Can Be Operated in PAL or NTSC Mode, 625 or 525 Line

• Wideband, Full–Fidelity Color Encoding

• Local or Remote Modes of Operation

• Minimal External Components

• Designed to Operate from 5.0 V supply

• Will Work with non standard Video

Figure 1. Simplified Application

36MHz Master Clock

H Sync

Video

System

525/60
625/50

3.58/4.43MHz

Vert/Comp Sync

Red

Green

Blue

Video Enable

Local/Remote

MC1378

PAL/

NTSC

Remote
Video

Composite
Overplayed
Video

COLOR TELEVISION

COMPOSITE VIDEO OVERLAY

SYNCHRONIZER

SEMICONDUCTOR

TECHNICAL DATA

P SUFFIX

PLASTIC PACKAGE

CASE 711

40

1

FN SUFFIX

PLASTIC PACKAGE

1

PIN CONNECTIONS

Local/Rem.

H. PLL Filter

H. VCO

Burst Gate Out

PAL/NTSC Mode

Ground

3.58/4.43 In

Chroma PLL Filter

Chroma VCO

R–Y Clamp
B–Y Clamp

R Input

G Input

B Input

–Y Output

Chroma Out

Loc. Vid. Clamp

Chroma In

* ( ) PLCC Pin Assignments

{

{

1 (1)
2 (2)
3 (3)

4 (4)
5 (5)

6 (7)
7 (8)
8 (9)
9 (10)
10 (11)
11 (12)
12 (13)
13 (14)
14 (15)
15 (16)
16 (18)
17 (19)
18 (20)
19 (21)

20 (22)

ORDERING INFORMATION

Operating

Device

MC1378P
MC1378FN

Temperature Range

TA = 0° to +70°C

CASE 777

(PLCC–44)

(44) 40
(43) 39
(42) 38
(41) 37
(40) 36
(38) 35
(37) 34
(36) 33

(35) 32

(34) 31
(33) 30

(32) 29
(31) 28
(30) 27
(29) 26
(27) 25
(26) 24
(25) 23
(24) 22
(23) 21

H. Sync In
Comp. Sync Out
V. Out/Sync In
Clock PLL Filter
Clock V

CC

Clock Output
Clock Ground

Clock VCO

}

Killer Filter
Quad. Loop Filter

PAL Indent. Cap
V

CC

Comp. Vid. Out
Ground
Overlay Enable

Rem. Vid. In
ACC Filter
–Y Input
Rem. Vid. Clamp

Package

Plastic DIP

PLCC–44

MOTOROLA ANALOG IC DEVICE DATA

 Motorola, Inc. 1996 Rev 0

1

MC1378

MAXIMUM RATINGS

Rating Symbol Value Unit

Supply Voltage V
Operating Temperature T
Storage Temperature T
Junction Temperature T
Power Dissipation, Package

Derate above 25°C

CC

A

stg

J(max)

P

D

RECOMMENDED OPERATING CONDITIONS

Condition Pin Value Unit

Supply Voltage 28, 36 5.4 ± 0.25 Vdc
RGB Input for 100% Saturation 14, 15, 16 1.0 Vpp
Color Oscillator Input Level 8 0.5 Vpp
Video Input, Positive 24 1.0 Vpp

6.0 Vdc

0 to +70 °C

–65 to +150 °C

150 °C

1.25
10

W

mW/°C

ELECTRICAL CHARACTERISTICS (V

Characteristics

Supply Current 28, 36 – 100 – mAdc
Video Output, Open Circuit, Positive 27 – 2.0 9.4 V
Modulation Angle (R – Y) to (B – Y) – 87 90 93 Degrees
RGB Input Impedance 14, 15, 16 – 10 – kΩ
Local/Remote Switch (TTL) High

Horizontal Sync Input, Negative Going (TTL) 40 – 4.3 – V
Vertical Sync Output, Negative Going,

Remote Mode (TTL)
Composite Sync Output, Negative Going (TTL) 39 – 4.3 – V
Burst Gate Output, Positive Going (TTL) 5 – 4.3 – V

= 5.0 V, TA = 25°C, circuit of Figure 4 or 5)

CC

Pin Min Typ Max Unit

Low

1 – Remote

38 – 4.3 – V

pp

– –

Local

pp
pp

pp
pp

Description of Operation – Refer to Figures 3, 4

Remote Mode Local Mode

The incoming remote video signal (Pin 24) supplies all
synchronizing information. A discussion of the function of the
phase detectors helps to clarify the lockup method:

PD1  locks the internally counted–down 4 MHz horizontal VCO

to the incoming horizontal sync. It is fast acting, to follow
VCR source fluctuations.

PD2  locks the 36 MHz clock VCO, which is divided down by

the video system, to the divided down horizontal VCO.

PD3  is a gated phase detector which locks the 14 MHz crystal

oscillator, divided by 4, to the incoming color burst.

PD4  controls an internal phase shifter to assure that the

outgoing color burst is the same phase as incoming burst
at PD3.

PD5  not used in REMOTE MODE
Vertical lock is obtained by continuously resetting the sync

generator in the video system with separated vertical sync from the
MC1378, Pin 38. This signal is TTL level vertical block sync,
negative going. The horizontal sync from the video system to Pin 40
is also TTL level with sync negative going. The local/remote switch,
Pin 1, is in local mode when grounded, remote mode when taken
to 5.0 V . The overlay control, Pin 25, has an analog characteristic,
centered about 1.0 V , which allows fading from local to remote.

The MC1378 and a video system combine to provide a fully
synchronized standard signal source. In this case, composite sync
must be supplied by the video system or other time base system.
In the MC1378 the phase detectors operate as follows:

PD1  locks the internally counted–down 4 MHz horizontal VCO

to a Horizontal Sync signal (at Pin 40) from the video
system (counted down from 36 MHz)

PD2  not used in LOCAL MODE.
PD3  not used in LOCAL MODE.

PD4  active, but providing an arbitrary phase shift setting

between the color oscillator and the output burst phase.

PD5  locks the 36 MHz clock VCO (which is divided down by

the video system) to the 14 MHz (crystal) color oscillator.
The 14 MHz is, therefore, the system standard in LOCAL
MODE, and is not DC controlled.

COMPOSITE VIDEO GENERATION

The color encoding at the RGB signals is done exactly as in
the MC1377. Composite chroma is looped out at Pins 18 and 20
to allow the designer to choose band shaping. Luminance is
similarly brought out (Pins 17 and 22) to permit installation of
the appropriate delay.
Composite sync output, Pin 39, and burst gate output, Pin 5,
are provided for convenience only.

2

MOTOROLA ANALOG IC DEVICE DATA

Figure 2.

+5.0 V

MC1378

4 MHz

Cer

Res

H Sync In

Comp

4

3

2

28

VCO

HORIZ

Divide by 256 Counter

H

PD2

PD1

PD3PD4

BG

40

L

R

Sync Out

39

L

Kill

Proc

Kill

Det

1

R

Local/Remote

Loc/Rem

Proc

Ident

Det

Ident

38

Switches

L

Vert. Out

Comp. Sync In

R

Vert

BG

L Clamp Video

Sync Sep

Video

Clamp

Remote

Fast

Video

Switch

Comp

Sync Sep

7/26

212429312725192318202217

Enable

Overlay

Gnd

Remote

Video

Out

Video In

CC

V

Burst Gate Out

Figure 2. Representative Block Diagram

MHz In

35.8/4.43

Out

Clock

36 35 37 8 30 5

34

CC

V

Clock

+5.0 V

Burst

Burst

R

Clock

33

Flag

Flag

PD5

VCO

BG

Decoder

BR

Decoder

L

32

R

9

F/F

PAL

ACC DET

H/2

Phase

90–270

Shift

R–YB–Y

Cont

PAL/NTSC

6

Mod Mod

R–Y

Clamp

B – Y

Clamp

B–Y

Diff

Color

12

13

14

15

Shift

Phase

0 – 180

Divide by 4 Ring Counter

L

VCO

4XSC

11

10

and

R–Y

Luma

16

Matrix

Local

Video

L

Clamp

Ref

V

R

ACC

AMP

Chroma

In Chroma In

–Y

–Y

Out

Out

Gnd

Clock

35.8/

35.5

MHz

MOTOROLA ANALOG IC DEVICE DATA

17.73

14.32/

MHz

PAL/

NTSC

RGB

In

3

÷

2275

÷

2270

Local
Video

Source

H Sync

Local/
Remote
(High)

R
G
B

Overlay Enable

Master Clock 35.8/35.5MHz

V. Sync

Comp

Sync

Out

0.033

+

47k 47

12

1.8k

1.0

3456 78910111213141516 181920

4

680

MHz
Cer

+

0.022

Res

15

Burst
Gate

Out

1.0µF

MC1378

Figure 3. Remote Mode

36MHz
Clock

0.3

0.001

µ

0.001

H

36pF

2.2

0.01

k

1.0µF

0.047

PAL

0.001

NTSC

0.1 0.1

470k

17.73 MHz

+

20pF

14.32/

+ 5

V

CC

10
+

0.0047

0.10.1

0.1

Video

Out

µ

F

75

10

µ

F10 µF

Remote

Video

In

++ +

10

µ

F

1.0µF

17

100/62

µ

F

TOKO

220

+++

10

166NNF

10264AG

1.0

µ

F

21232425272829303132333353637383940 26 224

1.2k

TDK

SDL–4301

1.2k

0.001

3.3k

+

1.0

µ

47/33

F

Local
Video

Source

÷

÷

2275
2270

÷

10

÷

8

Overlay Enable

Master Clock 35.8/35.5MHz

Composite Sync

Comp

Sync

Out

H Sync

12

Local/

1.8k

Remote

(High)

1.0

+

0.022

R
G
B

Figure 4. Local Mode

+ 5

Video

V

Out

36MHz

0.047

Clock

0.001

0.001

0.3

µ

0.1 0.1

H

470k

0.033

1.0µF

+

47k 47

36pF

3 4 5 6 78 9 10 111213141516 1819 20

4

680

MHz

PAL

Cer

NTSC

Res

15

Burst
Gate

Out

0.001

2.2

0.01

k

17.73MHz

+

20pF

14.32/

CC

+

0.0047

0.1

0.10.1

75

10

µ

F10 µF

17

100/62

+++

10

µ

F

TOKO

166NNF

10264AG

++

1.0µF

21232425272829303132333353637383940 26 224

220

3.3k

+

1.0

µ

F

1.0

0.001

µ

F

47/33

1.2k

1.2k

TDK

SDL–4301

4

MOTOROLA ANALOG IC DEVICE DATA

OUTLINE DIMENSIONS

40 21

1 20

A

DFGH

–N–

D

BRK

Y

MC1378

P SUFFIX

PLASTIC PACKAGE

CASE 711–03

ISSUE C

B

C

N

K

SEATING
PLANE

FN SUFFIX

PLASTIC PACKAGE

CASE 777–02

(PLCC–44)

ISSUE C

M

NOTES:

1. POSITIONAL TOLERANCE OF LEADS (D), SHALL
BE WITHIN 0.25 (0.010) AT MAXIMUM MATERIAL
CONDITION, IN RELATION TO SEATING PLANE
AND EACH OTHER.

2. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.

3. DIMENSION B DOES NOT INCLUDE MOLD FLASH.

M

L–M

T

S

L–M

INCHESMILLIMETERS

S

S

S

DIM MIN MAX MIN MAX

A 51.69 52.45 2.035 2.065
B 13.72 14.22 0.540 0.560

L

J

B

C 3.94 5.08 0.155 0.200
D 0.36 0.56 0.014 0.022

F 1.02 1.52 0.040 0.060
G 2.54 BSC 0.100 BSC
H 1.65 2.16 0.065 0.085

J 0.20 0.38 0.008 0.015
K 2.92 3.43 0.115 0.135

L 15.24 BSC 0.600 BSC
M 0 15 0 15

__ __

N 0.51 1.02 0.020 0.040

0.007(0.180) N

U

M

T

0.007(0.180) N

–L–

A

R

Z

C

G

G1

0.010 (0.25) N

S

T

NOTES:

1. DATUMS –L–, –M–, AND –N– ARE DETERMINED
WHERE TOP OF LEAD SHOULDER EXITS PLASTIC
BODY AT MOLD PARTING LINE.

2. DIMENSION G1, TRUE POSITION TO BE MEASURED
AT DATUM –T–, SEATING PLANE.

3. DIMENSIONS R AND U DO NOT INCLUDE MOLD
FLASH. ALLOWABLE MOLD FLASH IS 0.010 (0.25) PER
SIDE.

4. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

5. CONTROLLING DIMENSION: INCH.

6. THE PACKAGE TOP MAY BE SMALLER THAN THE
PACKAGE BOTTOM BY UP TO 0.012 (0.300).
DIMENSIONS R AND U ARE DETERMINED AT THE
OUTERMOST EXTREMES OF THE PLASTIC BODY
EXCLUSIVE OF MOLD FLASH, TIE BAR BURRS, GATE
BURRS AND INTERLEAD FLASH, BUT INCLUDING
ANY MISMATCH BETWEEN THE TOP AND BOTTOM
OF THE PLASTIC BODY.

7. DIMENSION H DOES NOT INCLUDE DAMBAR
PROTRUSION OR INTRUSION. THE DAMBAR
PROTRUSION(S) SHALL NOT CAUSE THE H
DIMENSION TO BE GREATER THAN 0.037 (0.940).
THE DAMBAR INTRUSION(S) SHALL NOT CAUSE THE
H DIMENSION TO BE SMALLER THAN 0.025

144

V

L–M

–M–

Z

D

W

X

VIEW D–D

0.007(0.180) N

0.007(0.180) N

M

M

S

L–M

T

L–M

T

S

S

S

H

J

E

0.004 (0.10)

SEATING

–T–

PLANE

S

VIEW S

S

K

G1

S

0.010 (0.25) N

0.007(0.180) N

L–M

T

M

L–M

T

K1

F

0.007(0.180) N

M

S

L–M

T

S

S

S

S

S

VIEW S

MILLIMETERSINCHES

0.635

DIM MIN MAX MIN MAX

A 0.685 0.695 17.40 17.65
B 0.685 0.695 17.40 17.65
C 0.165 0.180 4.20 4.57
E 0.090 0.110 2.29 2.79

F 0.013 0.019 0.33 0.48
G 0.050 BSC 1.27 BSC
H 0.026 0.032 0.66 0.81
J 0.020 ––– 0.51 –––
K 0.025 ––– 0.64 –––
R 0.650 0.656 16.51 16.66
U 0.650 0.656 16.51 16.66
V 0.042 0.048 1.07 1.21

W 0.042 0.048 1.07 1.21

X 0.042 0.056 1.07 1.42
Y ––– 0.020 ––– 0.50
Z 2 10 2 10

____

G1 0.610 0.630 15.50 16.00

.

K1 0.040 ––– 1.02 –––

MOTOROLA ANALOG IC DEVICE DATA

5

MC1378

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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Opportunity/Affirmative Action Employer.

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6

◊

MOTOROLA ANALOG IC DEVICE DATA

MC1378/D

*MC1378/D*