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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Differential PECL to TTL Translator
The MC10ELT/100ELT21 is a differential PECL to TTL translator. Because PECL (Positive ECL) levels are used only +5V and ground are required. The small outline 8-lead SOIC package and the single gate of the ELT21 makes it ideal for those applications where space, performance and low power are at a premium. Because the mature MOSAIC 1.5 process is used, low cost can be added to the list of features. The VBB output allows the ELT21 to also be used in a single-ended input mode. In this mode the VBB output is tied to the IN input for a non-inverting buffer or the IN input for an inverting buffer. If used the VBB pin should be bypassed to ground via a 0.01F capacitor. The ELT21 is available in both ECL standards: the 10ELT is compatible with positive MECL 10H logic levels while the 100ELT is compatible with positive ECL 100K logic levels.
MC10ELT21 MC100ELT21
8 1
* * * * *
3.5ns Typical Propagation Delay Differential PECL Inputs Small Outline SOIC Package 24mA TTL Output Flow Through Pinouts
D SUFFIX PLASTIC SOIC PACKAGE CASE 751-05
LOGIC DIAGRAM AND PINOUT ASSIGNMENT
NC 1 TTL PECL D0 3
8
VCC
PIN DESCRIPTION
D0
2
7
Q0
PIN Q D VCC VBB GND
FUNCTION TTL Output Diff PECL Inputs +5.0V Supply Reference Output Ground
6
NC
VBB
4
5
GND
7/96
(c) Motorola, Inc. 1996
3-1
REV 3
MC10ELT21 MC100ELT21
MAXIMUM RATINGS*
Symbol VCC TA TSTG Parameter DC Supply Voltage (Referenced to GND) Operating Temperature Range (In Free-Air) Storage Temperature Range Value 7.0 -40 to 85 -55 to +150 Unit V C C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions.
TTL OUTPUT DC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = -40C to 85C)
Symbol VOH VOL ICCH ICCL IOS Characteristic Output HIGH Voltage Output LOW Voltage Power Supply Current Power Supply Current Output Short Circuit Current -150 20 22 Min 2.4 0.5 29 32 -60 Typ Max Unit V V mA mA mA Condition IOH = -3.0mA IOL = 24mA
PECL INPUT DC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = -40C to 85C)
-40C Symbol IIH IIL VCMR VPP VIH VIL VBB Characteristic Input HIGH Current Input LOW Current Common Mode Range Minimum Peak-to-Peak Input1 Input HIGH Voltage Input LOW Voltage Reference Output 10ELT 100ELT 10ELT 100ELT 10ELT 100ELT 0.5 2.2 200 3.770 3.835 3.05 3.19 3.57 3.62 4.110 4.120 3.500 3.525 3.70 3.74 VCC Min Max 150 0.5 2.2 200 3.830 3.835 3.05 3.19 3.62 3.62 4.16 4.12 3.520 3.525 3.73 3.74 VCC Min 0C Max 150 0.5 2.2 200 3.870 3.835 3.05 3.19 3.65 3.62 4.19 4.12 3.520 3.525 3.75 3.74 VCC Min 25C Typ Max 150 0.5 2.2 200 3.930 3.835 3.05 3.19 3.69 3.62 4.265 4.120 3.550 3.525 3.81 3.75 VCC 85C Min Max 150 Unit A A V mV V V V VCC = 5.0V VCC = 5.0V VCC = 5.0V Condition
1. 200mV input guarantees full logic swing at the output.
AC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = -40C to 85C)
-40C Symbol tPLH tPHL Characteristic Propagation Delay1 Propagation Delay1 Min 2.0 2.0 Max 5.5 5.5 Min 2.0 2.0 0C Max 5.5 5.5 Min 2.0 2.0 25C Typ Max 5.5 5.5 85C Min 2.0 2.0 Max 5.5 5.5 Unit ns ns Condition CL = 20pF CL = 20pF
MOTOROLA
3-2
ECLinPS and ECLinPS Lite DL140 -- Rev 3
MC10ELT21 MC100ELT21
OUTLINE DIMENSIONS
D SUFFIX PLASTIC SOIC PACKAGE CASE 751-05 ISSUE P
-A- B
M 8 5 X 45 _
J
1 4
4X
-B-
M_ G F
NOTES: 1. DIMENSIONS A AND B ARE DATUMS AND T IS A DATUM SURFACE. 2. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 3. DIMENSIONS ARE IN MILLIMETER. 4. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 5. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 6. DIMENSION D DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D F G J K M P R MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.18 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50
P
0.25 (0.010)
M
-T-
8X
C
SEATING PLANE
D 0.25 (0.010)
M
K
TB
S
A
S
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R
JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-81-3521-8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298
ECLinPS and ECLinPS Lite DL140 -- Rev 3 3-3
*MC10ELT21/D*
MC10ELT21/D MOTOROLA

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