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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
PECL/TTL-TTL 1:8 Clock Distribution Chip
The MC10H/100H646 is a single supply, low skew translating 1:8 clock driver. Devices in the Motorola H600 translator series utilize the 28-lead PLCC for optimal power pinning, signal flow through and electrical performance. The single supply H646 is similar to the H643, which is a dual supply 1:8 version of the same function.
MC10H646 MC100H646
PENTIUM MICROPROCESSOR PECL/TTL-TTL CLOCK DRIVER
* * * * * * * * * *
PECL/TTL-TTL Version of Popular ECLinPSTM E111 Low Skew Guaranteed Skew Spec Tri-State Enable Differential Internal Design VBB Output Single Supply Extra TTL and ECL Power/Ground Pins Matched High and Low Output Impedance Meets Specifications Required to Drive the PentiumTM Microprocessor
FN SUFFIX PLASTIC PACKAGE The H646 was designed specifically to drive series terminated CASE 776-02 transmission lines. Special techniques were used to match the HIGH and LOW output impedances to about 7ohms. This simplifies the choice of the termination resistor for series terminated applications. To match the HIGH and LOW output impedances, it was necessary to remove the standard IOS limiting resistor. As a result, the user should take care in preventing an output short to ground as the part will be permanently damaged. The H646 device meets all of the requirements for driving the 60 and 66MHz Pentium Microprocessor. The device has no PLL components, which greatly simplifies its implementation into a digital design. The eight copies of the clock allows for point-to-point clock distribution to simplify board layout and optimize signal integrity. The H646 provides differential PECL inputs for picking up LOW skew PECL clocks from the backplane and distributing it to TTL loads on a daughter board. When used in conjunction with the MC10/100E111, very low skew, very wide clock trees can be designed. In addition, a TTL level clock input is provided for flexibility. Note that only one of the inputs can be used on a single chip. For correct operation, the unused input pins should be left open. The Output Enable pin forces the outputs into a high impedance state when a logic 0 is applied. The output buffers of the H646 can drive two series terminated, 50 transmission lines each. This capability allows the H646 to drive up to 16 different point-to-point clock loads. Refer to the Applications section for a more detailed discussion in this area. The 10H version is compatible with MECL 10HTM ECL logic levels. The 100H version is compatible with 100K levels.
MECL 10H and ECLinPS are trademarks of Motorola, Inc. Pentium is a trademark of Intel Corporation.
8/94
(c) Motorola, Inc. 1996
1
REV 1
OGND
OGND
OVT
Q4
Q5
Q6
Q7
PIN NAMES
PIN FUNCTION TTL Output Ground (0V) TTL Output VCC (+5.0V) Internal TTL GND (0V) Internal TTL VCC (+5.0V) ECL VEE (0V) ECL Ground (5.0V) Differential Signal Input (PECL) VBB Reference Output Signal Outputs (TTL) Tri-State Enable Input (TTL)
25 Q3 OGND Q2 OVT Q1 OGND Q0 26 27 28 1 2 3 4 5 TCLK
24
23
22
21
20
19 18 17 16 EN IVT IGND VCCE VCCE VBB ECLK
Pinout: 28-Lead PLCC (Top View)
15 14 13 12
OGND OVT IGND IVT VEE VCCE ECLK, ECLK VBB Q0-Q7 EN
6 IVT
7 IGND
8 VEE
9 VEE
10 VEE
11 ECLK INTERNAL TTL POWER IVT01 OVT01
LOGIC DIAGRAM
EN Q0 INTERNAL TTL GROUND Q1
Q0A
OGND0 IGND01
Figure 1. Output Structure
Power versus Frequency per Bit 700 PDynamic = CL VSwing VCC PTotal = PStatic + PDynamic 300pF
Q2 TCLK ECLK 500 POWER, mW ECLK Q4 400 300
Q3
600
200pF
Q5
100pF 200 100 50pF No Load 0 20 40 60 FREQUENCY, MHz 80 100 120
Q6
Q7
0
Figure 2. Power versus Frequency (Typical) TRUTH TABLE
TCLK GND GND H L X ECLK L H GND GND X ECLK H L GND GND X EN H H H H L Q L H H L Z
L = Low Voltage Level; H = High Voltage Level; Z = Tristate
MOTOROLA
2
TIMING SOLUTIONS BR1333 -- Rev 6
DC CHARACTERISTICS (IVT = OVT = VCCE = 5.0V 5%)
0C Symbol VOH VOL IOS Characteristic Output HIGH Voltage Output LOW Voltage Output Short Circuit Current Min 2.6 - - Max - - 0.5 - Min 2.6 - - 25C Max - - 0.5 - Min 2.6 - - 85C Max - - 0.5 - Unit V V mA Condition IOH = 24mA IOL = 48mA See Note 1
1. The outputs must not be shorted to ground, as this will result in permanent damage to the device. The high drive outputs of this device do not include a limiting IOS resistor.
TTL DC CHARACTERISTICS (VT = VE = 5.0 V 5%)
0C Symbol VIH VIL IIH IIL VOH VOL VIK IOS Characteristic Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Output HIGH Voltage Output LOW Voltage Input Clamp Voltage Output Short Circuit Current -100 2.5 2.0 0.5 -1.2 -225 -100 Min 2.0 0.8 20 100 -0.6 2.5 2.0 0.5 -1.2 -225 -100 Max Min 2.0 0.8 20 100 -0.6 2.5 2.0 0.5 -1.2 -225 25C Max Min 2.0 0.8 20 100 -0.6 A mA V V V mA VIN = 2.7 V VIN = 7.0 V VIN = 0.5 V IOH = -3.0 mA IOH = -24 mA IOL = 24 mA IIN = -18 mA VOUT = 0 V 85C Max Unit V Condition
10H PECL DC CHARACTERISTICS (IVT = OVT = VCCE = 5.0V 5%)
0C Symbol IIH IIL VIH VIL VBB Characteristic Input HIGH Current Input LOW Current Input HIGH Voltage Input LOW Voltage Output Reference Voltage 0.5 3.83 3.05 3.62 4.16 3.52 3.73 Min Typ Max 225 0.5 3.87 3.05 3.65 4.19 3.52 3.75 Min 25C Typ Max 175 0.5 3.94 3.05 3.69 4.28 3.555 3.81 Min 85C Typ Max 175 Unit A A V V V IVT = IVO = VCCE = 5.0V (1) IVT = IVO = VCCE = 5.0V (1) IVT = IVO = VCCE = 5.0V (1) Notes
100H PECL DC CHARACTERISTICS (IVT = OVT = VCCE = 5.0V 5%)
0C Symbol IIH IIL VIH VIL VBB Characteristic Input HIGH Current Input LOW Current Input HIGH Voltage Input LOW Voltage Output Reference Voltage 0.5 3.835 3.19 3.62 4.12 3.525 3.74 Min Typ Max 225 0.5 3.835 3.19 3.62 4.12 3.525 3.74 Min 25C Typ Max 175 0.5 3.835 3.19 3.62 3.835 3.525 3.74 Min 85C Typ Max 175 Unit A A V V V IVT = IVO = VCCE = 5.0V (1) IVT = IVO = VCCE = 5.0V (1) IVT = IVO = VCCE = 5.0V (1) Notes
1. ECL VIH, VIL and VBB are referenced to VCCE and will vary 1:1 with the power supply. The levels shown are for IVT = IVO = VCCE = 5.0V
TIMING SOLUTIONS BR1333 -- Rev 6
3
MOTOROLA
DC CHARACTERISTICS (IVT = OVT = VCCE = 5.0V 5%)
0C Symbol ICCL ICCH ICCZ Characteristic Power Supply Current Min Max 185 175 210 Min 25C Typ 166 154 Max 185 175 210 Min 85C Max 185 175 210 Unit mA mA Condition Total all OVT, IVT, and VCCE pins
AC CHARACTERISTICS (IVT = OVT = VCCE = 5.0V 5%)
0C Symbol tPLH tPHL tSK(O) Characteristic Propagation Delay Propagation Delay Output Skew ECLK to Q TCLK to Q ECLK to Q TCLK to Q Q0, Q3, Q4, Q7 Q1, Q2, Q5 Q0-Q7 ECLK to Q TCLK to Q tPLH - tPHL 0.3 66MHz @ 2.0V 66MHz @ 0.8V 60MHz @ 2.0V 60MHz @ 0.8V 5.5 5.5 6.0 6.0 75 80 Min 4.8 5.1 4.4 4.7 Max 5.8 6.4 5.4 6.0 350 350 500 1.0 1.3 1.0 1.5 0.3 5.5 5.5 6.0 6.0 75 80 Min 5.0 5.3 4.4 4.8 25C Max 6.0 6.4 5.4 5.9 350 350 500 1.0 1.1 1.0 1.5 0.3 5.5 5.5 6.0 6.0 75 80 Min 5.6 5.7 4.8 5.2 85C Max 6.6 7.0 5.8 6.5 350 350 500 1.0 1.3 1.0 1.5 Unit ns ns ps Note 1, 6 Condition
tSK(PR) tSK(P) tr, tf tPW
Process Skew Pulse Skew Rise/Fall Time Output Pulse Width
ns ns ns ns
Note 2, 6
Note 3, 6
tStability FMAX 1. 2. 3. 4. 5. 6.
Clock Stability Maximum Input Frequency
ps MHz
Note 4, 6 Note 5, 6
Output skew defined for identical output transitions. Process skew is valid for VCC = 5.0V 5%. Parameters guaranteed by tSK(P) and tr, tf specification limits. Clock stability is the period variation between two successive rising edges. For series terminated lines. See Applications section for FMAX enhancement techniques. All AC specifications tested driving 50 series terminated transmission lines at 80MHz.
MOTOROLA
4
TIMING SOLUTIONS BR1333 -- Rev 6
OUTLINE DIMENSIONS
FN SUFFIX PLASTIC PLCC PACKAGE CASE 776-02 ISSUE D
B -N- Y BRK U D Z -L- -M- 0.007 (0.180)
M
0.007 (0.180)
M
T L-M
S
N
S S
T L-M
N
S
W
28 1
D
X VIEW D-D
G1
0.010 (0.250)
S
T L-M
S
N
S
V
A Z R C
0.007 (0.180) 0.007 (0.180)
M
T L-M T L-M
S
N N
S
H
0.007 (0.180)
M
T L-M
S
N
S
M
S
S
E 0.004 (0.100) G G1 0.010 (0.250)
S
K1
J
-T- VIEW S
SEATING PLANE
K F VIEW S 0.007 (0.180)
M
T L-M
S
N
S
T L-M
S
N
S
NOTES: 1. DATUMS -L-, -M-, AND -N- 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 (0.250) 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 (0.635).
DIM A B C E F G H J K R U V W X Y Z G1 K1
INCHES MIN MAX 0.485 0.495 0.485 0.495 0.165 0.180 0.090 0.110 0.013 0.019 0.050 BSC 0.026 0.032 0.020 --- 0.025 --- 0.450 0.456 0.450 0.456 0.042 0.048 0.042 0.048 0.042 0.056 --- 0.020 2_ 10_ 0.410 0.430 0.040 ---
MILLIMETERS MIN MAX 12.32 12.57 12.32 12.57 4.20 4.57 2.29 2.79 0.33 0.48 1.27 BSC 0.66 0.81 0.51 --- 0.64 --- 11.43 11.58 11.43 11.58 1.07 1.21 1.07 1.21 1.07 1.42 --- 0.50 2_ 10_ 10.42 10.92 1.02 ---
TIMING SOLUTIONS BR1333 -- Rev 6
5
MOTOROLA
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. "Typical" 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 others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other 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 or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405; Denver, Colorado 80217. 303-675-2140 or 1-800-441-2447 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 INTERNET: http://www.mot.com/sps/
JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 81-3-3521-8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298
MOTOROLA
6
*MC10H646/D*
MC10H646/D TIMING SOLUTIONS BR1333 -- Rev 6

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