AZ100ELT21
Differential PECL to CMOS/TTL Translator
1630 S. STAPLEY DR., SUITE 125 • MESA, ARIZONA 85204 • USA • (480) 962-5881 • FAX (480) 890-2541
www.azmicrotek.com
ARIZONA MICROTEK, INC.
FEATURES
• 3.5ns Typical Propagation Delay
• Differential PECL Inputs
• CMOS/TTL Outputs
• Flow Through Pinouts
• Operating Range of 3.0V to 5.5V
• Direct Replacement for ON Semiconductor
MC100ELT21
• Use AZ100ELT21 for 10K Applications
DESCRIPTION
The AZ100ELT21 is a differential PECL to CMOS/TTL translator. Because PECL (Positive ECL) levels are
used, only VCC and ground are required. The small outline 8-lead packaging and the single gate of the ELT21 makes
it ideal for those applications where space, performance and low power are at a premium.
The ELT21 provides a VBB output for single-ended use or a DC bias reference for AC coupling to the device.
For single-ended input applications, the VBB reference should be connected to one side of the D0/D0¯¯ differential
input pair. The input signal is then fed to the other D0/D0¯¯ input. The VBB pin should be used only as a bias for the
ELT21 as its sink/source capability is limited. When used, the VBB pin should be bypassed to ground via a 0.01µF
capacitor.
NOTE: Specification in ECL/PECL tables are valid when thermal equilibrium is established.
LOGIC DIAGRAM AND PINOUT ASSIGNMENT
PACKAGE AVAILABILITY
PACKAGE PART NO. MARKING
SOIC 8 AZ100ELT21D AZM100ELT21
SOIC 8 T&R AZ100ELT21DR1 AZM100ELT21
SOIC 8 T&R AZ100ELT21DR2 AZM100ELT21
TSSOP 8 AZ100ELT21T AZHLT21
TSSOP 8 T&R AZ100ELT21TR1 AZHLT21
TSSOP 8 T&R AZ100ELT21TR2 AZHLT21
PIN DESCRIPTION
PIN FUNCTION
Q CMOS/TTL Output
D0, D0¯¯ Differential Inputs
VCC Positive Supply
VBB Reference Voltage Output
GND Ground
NC No Connect
8
5
6
7
4
3
2
1 VCC
Q
GND
NC
D0
VBB
D0 NC
PECL
CMOS/TTL
AZ100ELT21
March 2002 * REV - 3 www.azmicrotek.com
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Absolute Maximum Ratings are those values beyond which device life may be impaired.
Symbol Character Value Unit
VCC DC Supply Voltage (Referenced to GND) 7.0 V
TA Operating Temperature Range (In Free-Air) -40 to +85 °C
TSTG Storage Temperature Range -65 to +150 °C
CMOS/TTL DC CHARACTERISTICS (VCC = +3.0V to +5.5V)
Symbol Characteristic Min Typ Max Unit Condition
VOH Output HIGH Voltage VCC - 0.5 V IOH = -24 mA
VOL Output LOW Voltage 0.5 V IOL = 24 mA
ICC Power Supply Current 9.0 15 mA 0°C to 85°C
ICC Power Supply Current 9.0 17.6 mA -40°C to 85°C
IOS Output Short Circuit Current 100 mA
100K LVPECL DC Characteristics (VCC = +3.3V)
-40°C 0°C 25°C 85°C
Symbol Characteristic Min T
yp
Max Min T
yp
Max Min T
yp
Max Min T
yp
Max Unit
VIH Input HIGH Voltage 2135 2420 2135 2420 2135 2420 2135 2420 mV
VIL Input LOW Voltage 1490 1825 1490 1825 1490 1825 1490 1825 mV
VBB Reference Voltage 1920 2090 1920 2090 1920 2090 1920 2090 mV
VPP Minimum Input Swing1 200 200 200 200 mV
VCMR Common Mode Range 1.2 VCC 1.2 VCC 1.2 VCC 1.2 VCC V
IIL Input LOW Current 0.5 0.5 0.5 0.5 µA
IIH Input HIGH Current 150 150 150 150
µA
1. 200mV input guarantees full logic swing at the output.
100K PECL DC Characteristics (VCC = +5.0V)
-40°C 0°C 25°C 85°C
Symbol Characteristic Min T
yp
Max Min T
yp
Max Min T
yp
Max Min T
yp
Max Unit
VIH Input HIGH Voltage 3835 4120 3835 4120 3835 4120 3835 4120 mV
VIL Input LOW Voltage 3190 3525 3190 3525 3190 3525 3190 3525 mV
VBB Reference Voltage 3620 3790 3620 3790 3620 3790 3620 3790 mV
VPP Minimum Input Swing1 200 200 200 200 mV
VCMR Common Mode Range 1.2 VCC 1.2 VCC 1.2 VCC 1.2 VCC V
IIL Input LOW Current 0.5 0.5 0.5 0.5 µA
IIH Input HIGH Current 150 150 150 150
µA
1. 200mV input guarantees full logic swing at the output.
AC Characteristics (VCC = +3.0V to +5.5V)
-40°C 0°C 25°C 85°C
Symbol Characteristic Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit
tPLH / tPHL
Propagation Delay to Output1
VCC = 4.5V to 5.5V
VCC = 3.0V to 3.6V
2.0
3.5
5.5
7.0
2.0
3.5
5.5
7.0
2.0
3.5
5.5
7.0
2.0
3.5
5.5
7.0
ns
1. CL=20pF
AZ100ELT21
March 2002 * REV - 3 www.azmicrotek.com
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MILLIMETERS INCHES
DIM MIN MAX MIN MAX
A 1.35 1.75 0.053 0.069
A1 0.10 0.25 0.004 0.010
A2 1.28 1.57 0.050 0.062
A3 0.25 0.01
bp 0.36 0.49 0.014 0.019
c 0.19 0.25 0.0075 0.0100
D 4.80 5.00 0.19 0.20
E 3.80 4.00 0.15 0.16
e 1.27 0.050
HE 5.80 6.20 0.228 0.244
L 1.05 0.041
Lp 0.40 1.27 0.016 0.050
Q 0.60 0.70 0.024 0.028
v 0.25 0.01
w 0.25 0.01
y 0.10 0.004
Z 0.30 0.70 0.012 0.028
θ 0O 8
O 0
O 8
O
N
OTES:
1. DIMENSIONS D AND E DO NOT
INCLUDE MOLD PROTRUSION.
2. MAXIMUM MOLD PROTRUSION
FOR D IS 0.15mm.
3. MAXIMUM MOLD PROTRUSION
FOR E IS 0.25mm.
PACKAGE DIAGRAM
SOIC 8
AZ100ELT21
March 2002 * REV - 3 www.azmicrotek.com
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PACKAGE DIAGRAM
TSSOP 8
MILLIMETERS
DIM MIN MAX
A 1.10
A1 0.05 0.15
A2 0.75 0.95
A3 0.25
bp 0.22 0.40
c 0.13 0.23
D 2.90 3.10
E 2.90 3.10
e 0.65
HE 4.75 5.05
L 0.95
Lp 0.40 0.70
v 0.10
w 0.08
y 0.10
Z 0.38 0.64
θ 0O 6
O
N
OTES:
1. DIMENSIONS D AND E DO NOT
INCLUDE MOLD PROTRUSION.
2. MAXIMUM MOLD PROTRUSION
FOR D IS 0.15mm.
3. MAXIMUM MOLD PROTRUSION
FOR E IS 0.25mm.
AZ100ELT21
March 2002 * REV - 3 www.azmicrotek.com
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Arizona Microtek, Inc. reserves the right to change circuitry and specifications at any time without prior notice. Arizona Microtek, Inc.
makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Arizona
Microtek, Inc. 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 special, consequential or incidental damages. Arizona Microtek, Inc. does not convey any license
rights nor the rights of others. Arizona Microtek, Inc. products are not designed, intended or authorized for use as components in systems
intended to support or sustain life, or for any other application in which the failure of the Arizona Microtek, Inc. product could create a
situation where personal injury or death may occur. Should Buyer purchase or use Arizona Microtek, Inc. products for any such
unintended or unauthorized application, Buyer shall indemnify and hold Arizona Microtek, Inc. 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 tha
t
Arizona Microtek, Inc. was negligent regarding the design or manufacture of the part.
