QP26LS31
QP26LS32
QP26LS33
October 9, 2007
2945 Oakmead Village Ct, Santa Clara, CA 95051 • Phone: (408) 737-0992 • Fax: (408) 736—8708 • Internet: www.qpsemi.com
QP26LS31 – Quad High Speed Differential Line Driver
QP26LS32 – Quad Differential Line Receiver
(200mv input sensitivity over ± 7V input range)
QP26LS33 – Quad Differential Line Receiver
(500mv input sensitivity over ± 15V input range)
General Description
The QP26LSxx family of interface products were re-engineered in a modern wafer fabrication process to replace AMD
26LSxx devices. All features of the AMD devices were duplicated; the devices are “plug and play” compatible. The
circuit design and wafer fab process selected duplicates the electrical characteristics of the original devices, including
parasitic performance. “Failsafe” characteristics were duplicated for the line receivers.
The QP26LSxx family is designed to meet the requirements of RS-422, RS-423, Federal Standards 1020 and 1030 for
balanced and unbalanced digital data transmission.
The QP26LS31 is designed to provide unipolar differential drive to twisted-pair or parallel-wire transmission lines. The
device provides both enable and disable functions common to all four drivers. It features tri-state outputs and logical
OR-ed complementary enable inputs. The inputs are all LS compatible and are all one unit load.
The QP26LS32 features an input sensitivity of 200mV over the input voltage range of ±7V while the QP26LS33 features
an input sensitivity of 500mV over the input voltage range of ±15V. Both provide and enable and disable function
common to all four receivers. Both feature tri-state outputs with 8mA sink capability and incorporate a fail-safe input-
output relationship that keeps the outputs high when the inputs are open.
The family is constructed using Advanced Low-Power Schottky processing.
QP Semiconductor products are not authorized for use in any space applications. The inclusion of QP Semiconductor
products in space applications implies that the space application manufacturer assumes all risk of such use and in doing
so indemnifies QP Semiconductor against all charges.
QP26LS31, QP26LS32 & QP26LS33
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 2 of 6
Block Diagrams
QP26LS31
QP26LS32
QP26LS33
Connection Diagrams
DIP LCC
QP26LS31
QP26LS32
QP26LS33
Absolute Maximum Ratings
Stresses above the AMR may cause permanent damage, extended operation at AMR may degrade performance and affect reliability
Condition Units Notes
26LS31
QP26LS31, QP26LS32 & QP26LS33
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 3 of 6
Power Supply and Input Voltage 7.0 Volts DC
Output Voltage 5.5 Volts DC
Storage Temperature Range -65 to +150 ºC
Lead Temperature (soldering, 10 seconds) +300 ºC
Maximum Power Dissipation (PD) 450 mW
Junction Temperature (TJ) +150 ºC
26LS32 and 26LS33
Power Supply Voltage (VCC) 7.0 Volts DC
Common Mode Range ±25 Volts DC
Differential Input Voltage ±25 Volts DC
Enable Voltage 7.0 Volts DC
Output Sink Current 50 mA
Storage Temperature Range -65 to +150 ºC
Power Dissipation (PD) 500 mW
Lead Temperature (soldering, 10 seconds) +300 ºC
Junction Temperature (TJ) +150 ºC
Recommended Operating Conditions
Condition Units Notes
26LS31
Supply Voltage Range (VCC) 4.5 to 5.5 Volts DC
Minimum High-Level Input Voltage (VIH) 2.0 Volts DC
Maximum Low-Level Input Voltage (VIL) 0.8 Volts DC
Ambient Operating Range (TA) -55C to +125 ºC /1
26LS32 and 26LS33
Supply Voltage Range (VCC) 4.5 to 5.5 Volts DC
Minimum High-Level Input Voltage (VIH) 2.0 Volts DC
Maximum Low-Level Input Voltage (VIL) 0.8 Volts DC
Ambient Operating Range (TA) -55C to +125 ºC /1
Input Hysteresis (VHYST) 50 mV Typical
/1 – Maximum PD, Maximum TJ Are Not to Be Exceeded
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test Symbol Conditions
-55ºC ≤TA≤+125ºC
Unless Otherwise Specified
Min Max Unit
26LS31
Output High Voltage VOH V
CC = 4.5V, IOH= -20mA 2.5 V
Output Low Voltage VOL V
CC = 4.5V, IOH= 20mA 0.5 V
Input High Voltage VIH V
CC = 4.5V 2.0 V
Input Low Voltage VIL V
CC = 5.5V 0.8 V
Input Low Current IIL V
CC = 5.5V, VIN = 0.4V 0.10 -0.36 mA
QP26LS31, QP26LS32 & QP26LS33
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 4 of 6
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test Symbol Conditions
-55ºC ≤TA≤+125ºC
Unless Otherwise Specified
Min Max Unit
Input High Current IIH V
CC = 5.5V,VIN = 2.7V -2.0 20 μA
Input Reverse Current II V
CC = 5.5V,VIN = 7.0V -0.01 0.1 mA
Off-State (high impedance)
Output Current
IO V
CC = 5.5V,VO = 2.5V
VCC = 5.5V, VO = 0.5V
20
-20
μA
μA
Input Clamp Voltage VI V
CC = 4.5V,IIN = -18mA -1.5 V
Output Short Circuit Current IOS V
CC = 5.5V -30 -150 mA
Power Supply Current ICC V
CC = 5.5V
All outputs disabled
80 mA
Propagation Delay,
Output to Output
tSKEW V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
6.0
9.0
ns
ns
Propagation Delay,
Input to Output
tPLH V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
20
30
ns
ns
t
PHL V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
20
30
ns
ns
Output Disable Time,
ENABLE to OUTPUT
tPLZ V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
35
53
ns
ns
t
PHL V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
30
45
ns
ns
Output Enable Time,
ENABLE to OUTPUT
tPZL V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
45
68
ns
ns
t
PZH V
CC = 5.0V 25ºC
CL = 30pf -55 & 125ºC
40
60
ns
ns
26LS32 and 26LS33
Differential Input Voltage
Sensitivity
VTH V
OUT = VOL or VOH
26LS32 -7V≤VCM≤+7V
26LS33 –15V≤VCM≤+15V
-0.2
-0.5
+0.2
+0.5
V
V
Input Resistance RIN –15V≤VCM≤+15V
(one input ac ground)
6.0 kΩ
Input Current (under test) IIN V
IN = +15V
(other input –15V≤VIN≤+15V)
2.3 mA
Output High Voltage VOH V
CC = 4.5V,∆VIN=1.0V,
VENABLEBAR=0.8V,
IOH = -440μA
2.5 V
Output Low Voltage VOL V
CC = 4.5V,∆VIN=-1.0V,
VENABLEBAR=0.8V,
IOL= 4mA
0.4 V
V
CC = 4.5V,∆VIN=-1.0V,
VENABLEBAR = 0.8V,
IOL= 8mA
0.45 V
Enable Low Voltage VIL V
CC = 5.5V 0.8 V
Enable High Voltage VIH V
CC = 4.5V 2.0 V
Enable Clamp Voltage VIC V
CC = 4.5V,IIN = -18mA
VCC = 5.5V
-1.5V V
QP26LS31, QP26LS32 & QP26LS33
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 5 of 6
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test Symbol Conditions
-55ºC ≤TA≤+125ºC
Unless Otherwise Specified
Min Max Unit
Off-State (high impedance)
Output Current
IO V
CC = 5.5V,VO = 2.4V
VCC = 5.5V,VO = 0.4V
20
-20
μA
μA
Enable Low Current IIL V
IN = 0.4V, VCC = 5.5V -0.36 mA
Enable High Current
Sensitivity
IIH V
IN = 2.7V, VCC = 5.5V 20 μA
Output Short Circuit Current IOS V
O = 0V,VCC = 5.5V,
,∆VIN = 1.0V
-15 -85 mA
Supply Current ICC V
CC = 5.5V,
Data Inputs = GND,
Outputs Disabled
70 mA
Enable Input High Current II V
IN = 5.5, VCC = 5.5V 100 μA
Propagation Delay
Input to Output
TPLH V
CC = 5.0V, CL = 15pF
25ºC
-55ºC and 125ºC
25
38
ns
ns
T
PHL 25ºC
-55ºC and 125ºC
25
38
ns
ns
Output Disable Time,
ENABLE to Output
TPLZ V
CC = 5.0V, CL = 15pF
25ºC
-55ºC and 125ºC
30
45
ns
ns
T
PHZ 25ºC
-55ºC and 125ºC
22
33
ns
ns
Output Enable Time,
Enable to Output
TPZL V
CC = 5.0V, CL = 15pF
25ºC
-55ºC and 125ºC
22
33
ns
ns
T
PZH 25ºC
-55ºC and 125ºC
22
33
ns
ns
Ordering Information
Military Part Number Package (Mil-Std-1835) Generic
5962-7802301M2A CQCC1-N20 26LS31
5962-7802301MEA GDIP1-T16 CDIP2-T16 26LS31
5962-7802301MFA GDIP2-F16 CDFP3-F16 26LS31
5962-7802301Q2A CQCC1-N20 26LS31
5962-7802001M2A CQCC1-N20 26LS32
5962-7802001MEA GDIP1-T16 CDIP2-T16 26LS32
5962-7802001MFA GDIP2-F16 CDFP3-F16 26LS32
5962-7802002M2A CQCC1-N20 26LS33
5962-7802002MEA GDIP1-T16 CDIP2-T16 26LS33
5962-7802002MFA GDIP2-F16 CDFP3-F16 26LS33
QP Semiconductor supports Source Cont rol Dra wing (SCD), die sales and custom package development for this product family.
Notes:
QP26LS31, QP26LS32 & QP26LS33
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 6 of 6
This datasheet is informational only, these devices are manufactured to the requirements of the listed Standard Microcircuit
Drawings (SMD’s or 5962 drawings) and/or JAN Slash Sheets (M38510).
Package outline information an d specifications are defined by the listed SMD or JAN drawing and are normally cross referenced in
those drawings to Mil-Std-1835 package dimension requirements.
The listed drawings, Mil-PRF-38535, Mil-Std-88 3 and Mil-Std-1835 are available online at http://www.dscc.dla.mil/
Additional information is available at our website http://www.qpsemi.com
