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PDF AM26LS30 Data sheet ( Hoja de datos )
| Número de pieza | AM26LS30 | |
| Descripción | DUAL DIFFERENTIAL/ QUAD SINGLE.ENDED LINE DRIVERS | |
| Fabricantes | Motorola Inc | |
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Order this document by AM26LS30/D
Advance Information
Dual Differential (EIA-422-A)/
Quad Single-Ended
(EIA-423-A) Line Drivers
The AM26LS30 is a low power Schottky set of line drivers which can be
configured as two differential drivers which comply with EIA–422–A
standards, or as four single–ended drivers which comply with EIA–423–A
standards. A mode select pin and appropriate choice of power supplies
determine the mode. Each driver can source and sink currents in excess of
50 mA.
In the differential mode (EIA–422–A), the drivers can be used up to
10 Mbaud. A disable pin for each driver permits setting the outputs into a
high impedance mode within a ±10 V common mode range.
In the single–ended mode (EIA–423–A), each driver has a slew rate
control pin which permits setting the slew rate of the output signal so as to
comply with EIA–423–A and FCC requirements and to reduce crosstalk.
When operated from symmetrical supplies (±5.0 V), the outputs exhibit zero
imbalance.
The AM26LS30 is available in a 16–pin plastic DIP and surface mount
package. Operating temperature range is –40° to +85°C.
• Operates as Two Differential EIA–422–A Drivers, or Four Single–Ended
EIA–423–A Drivers
• High Impedance Outputs in Differential Mode
• Short Circuit Current Limit In Both Source and Sink Modes
• ± 10 V Common Mode Range on High Impedance Outputs
• ± 15 V Range on Inputs
• Low Current PNP Inputs Compatible with TTL, CMOS, and MOS
Outputs
• Individual Output Slew Rate Control in Single–Ended Mode
• Replacement for the AMD AM25LS30 and National Semiconductor
DS3691
AM26LS30
DUAL DIFFERENTIAL/
QUAD SINGLE–ENDED
LINE DRIVERS
SEMICONDUCTOR
TECHNICAL DATA
PC SUFFIX
PLASTIC PACKAGE
CASE 648
FN SUFFIX
PLASTIC PACKAGE
CASE 775
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
PIN CONNECTIONS
VCC
Input A
Input B/
Enable AB
Mode
1
2
3
4
Gnd
Input C/
Enable CD
Input D
VEE
5
6
7
8
16 SR–A
15 Output A
14 Output B
13 SR–B
12 SR–C
11 Output C
10 Output D
9 SR–D
(Top View)
Representative Block Diagrams
Single–Ended Mode
EIA–423–A
Input A
Input B
Input C
Input D
SR–A
Out A
SR–B
Out B
SR–C
Out C
SR–D
Out D
Differential Mode
EIA–422–A
Enable AB
Input A
Input D
Out A
Out B
Out C
Out D
Enable CD
VCC – 1
VEE – 8
Gnd – 5
Mode – 4
In B/En AB
Mode
NC
Gnd
In C/En CD
3 2 1 20 19
4 18
5 17
6 16
7 15
8 14
9 10 11 12 13
Out B
SR–B
NC
SR–C
Out C
ORDERING INFORMATION
Device
Operating
Temperature Range Package
AM26LS30PC
MC26LS30D
AM26LS30FN
Plastic DIP
TA = – 40° to +85°C SO–16
PLCC–20
This document contains information on a new product. Specifications and information herein are
subject to change without notice.
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1995
1
1 page  
AM26LS30
Figure 4. Differential Mode Enable Timing
0 or 3.0 V
Vin
VCC
500 pF
RL VSS
En 450 Ω
S.G.
1.5 V
Vin
tPHZ
(Vin = Hi)
Output
Current
(Vin = Lo)
tPLZ
p pNOTES: 1. S.G. set to: f 1.0 MHz; duty cycle = 50%; tr, tf, 10 ns.
2. Above tests conducted by monitoring output current levels.
0.1 VSS/RL
0.1 VSS/RL
VSS/RL
VSS/RL
+3.0 V
1.5 V
0V
tPZH
0.5 VSS/RL
0.5 VSS/RL
tPZL
Figure 5. Single–Ended Mode Rise/Fall Time and Data Propagation Delay
VCC
Vin
CC
Vin 1.5 V
tPDH
VEE
S.G.
450
500 pF
VO
90%
50%
Vout 10%
tr
p pNOTES: 1. S.G. set to: f 100 kHz; duty cycle = 50%; tr, tf, 10 ns.
2. tSK4 = tPDH–tPDL for each driver.
3. tSK5 computed by subtracting the shortest tPDH from the longest tPDH of the 4 drivers within a package.
4. tSK6 computed by subtracting the shortest tPDL from the longest tPDL of the 4 drivers within a package.
+2.5 V
1.5 V
tPDL
0V
90%
50%
10%
tf
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
AM26LS30
Figure 17. EIA–422–A Example
R TTL
R TTL
En
TTL D
En
TTL D
RT
En
TTL D
TTL R
En
TTL D
En
TTL D
TTL R
RT
TTL
En
D
R TTL
Twisted
Pair
NOTES: 1. Terminating resistors RT should be located at the physical ends of the cable.
2. Stubs should be as short as possible.
3. Receivers = AM26LS32, MC3486, SN75173 or SN75175.
4. Circuit grounds must be connected together through a dedicated wire.
CC
TTL D
CC
TTL D
CC
TTL D
CC
TTL D
AM26LS30
Figure 18. EIA–423–A Example
+
RT – R
TTL
+
RT – R
TTL
+
RT – R
TTL
RT
+R
–
TTL
AM26LS32, MC3486, SN75173, or SN75175
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AM26LS30.PDF ] | |
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