Texas Instruments AM26LV31INS, AM26LV31CNSR, AM26LV31CNSLE, AM26LV31CDR, AM26LV31CD Datasheet
AM26LV31
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
D
Switching Rates up to 32 MHz
D
Operates From a Single 3.3-V Supply
D
Propagation Delay Time ...8 ns Typ
D
Pulse Skew Time . . . 500 ps Typ
D
High Output-Drive Current . . . ±30 mA
D
Controlled Rise and Fall Times ...3 ns Typ
D
Differential Output Voltage With
100-Ω Load . . . 1.5 V Typ
D
Ultra-Low Power Dissipation
– dc, 0.3 mW Max
– 32 MHz All Channels (No Load),
385 mW Typ
D
Accepts 5-V Logic Inputs With a 3.3-V
Supply
D
Low-Voltage Pin-to-Pin Compatible
Replacement for AM26C31, AM26LS31,
MB571
D
High Output Impedance in Power-Off
Condition
D
Driver Output Short-Protection Circuit
D
Package Options Include Plastic
Small-Outline (D, NS) Packages
D OR NS PACKAGE
(TOP VIEW)
1A
1
1Y
2
3
1Z
4
G
5
2Z
6
2Y
7
2A
GND
The D package is available taped
and reeled. The NS package is only
available taped and reeled. Add the
suffix R to device type (e.g.,
AM26LV31CDR).
8
16
15
14
13
12
11
10
V
CC
4A
4Y
4Z
G
3Z
3Y
9
3A
description
The AM26L V31 is a BiCMOS quadruple dif ferential line driver with 3-state outputs. It is designed to be similar
to TIA/EIA-422-B and ITU Recommendation V.11 drivers with reduced supply-voltage range.
The device is optimized for balanced-bus transmission at switching rates up to 32 MHz. The outputs have very
high current capability for driving balanced lines such as twisted-pair transmission lines and provide a high
impedance in the power-off condition. The enable function is common to all four drivers and offers the choice
of active-high or active-low enable inputs. The AM26LV31 is designed using Texas Instruments (TI)
proprietary LinIMPACT-C60 technology, facilitating ultra-low power consumption without sacrificing speed.
This device offers optimum performance when used with the AM26LV32 quadruple line receivers.
The AM26LV31C is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
INPUT
A
H H X H L
L H XLH
H X LHL
L X LLH
X L H Z Z
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
ENABLES OUTPUTS
G G Y Z
LinIMP ACT-C60 and TI are trademarks of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1999, Texas Instruments Incorporated
1
AM26LV31
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
logic symbol
4
G
12
G
1
1A
7
2A
9
3A
15
4A
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
†
≥1
G
EN
schematic (each driver)
EQUIVALENT OF EACH INPUT (A, G, OR G
)
10
11
14
13
logic diagram (positive logic)
4
G
12
G
1
1A
2
1Y
3
1Z
6
2Y
5
2Z
3Y
3Z
4Y
4Z
7
2A
9
3A
15
4A
TYPICAL OF ALL OUTPUTS (Y AND Z)
10
11
14
13
2
1Y
3
1Z
6
2Y
5
2Z
3Y
3Z
4Y
4Z
V
CC
100 Ω
Input
GND
All resistor values are nominal.
40 kΩ
6 Ω
V
CC
Output
GND
2
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AM26LV31
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC (see Note 1) –0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI –0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
–0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
Package thermal impedance, θJA (see Note 2): D package 73°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package 64°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to GND.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
High-level input voltage, V
Low-level input voltage, V
High-level output current, I
Low-level output current, I
Operating free-air temperature, T
CC
IH
IL
OH
OL
A
3 3.3 3.6 V
2 V
0.8 V
–30 mA
30 mA
0 70 °C
†
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3
AM26LV31
R
L
100 Ω
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
electrical characteristics over recommended operating supply-voltage and free-air temperature
ranges (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
V
IK
V
OH
V
OL
|VOD| Differential output voltage
V
OC
∆|VOC|
I
O
I
OZ
I
IH
I
IL
I
OS
I
CC
C
pd
†
All typical values are at VCC = 3.3 V and TA = 25°C.
‡
∆|VOD| and ∆|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low
level.
§
Cpd determines the no-load dynamic current consumption. IS = Cpd × VCC × f + I
Input clamp voltage II = –18 mA –1.5 V
High-level output voltage VIH = 2 V, IOH = –12 mA 1.85 2.3 V
Low-level output voltage VIL = 0.8 V, IOH = 12 mA 0.8 1.05 V
‡
Common-mode output voltage
Change in magnitude of
common-mode output voltage
Output current with power off VO = –0.25 V or 6 V, VCC = 0 ±100 µA
Off-state (high-impedance state)
output current
High-level input current VCC = 0 or 3 V, VI = 5.5 V 10 µA
Low-level input current VCC = 3.6 V, VI = 0 –10 µA
Short-circuit output current
Supply current (all drivers) VI = VCC or GND, No load 100 µA
Power dissipation capacitance (all drivers)§No load 160 pF
‡
=
VO = –0.25 V or 6 V, G = 0.8 V or G = 2 V ±100 µA
VCC = 3.6 V, VO = 0 –200 mA
CC
0.95 1.5 V
1.3 1.55 1.8 V
±0.2 V
switching characteristics, V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
t
PHL
t
t
SR Slew rate, single-ended output voltage See Note 3 and Figure 2 0.3 1 V/ns
t
PZH
t
PZL
t
PHZ
t
PLZ
t
sk(p)
t
sk(o)
t
sk(lim)
NOTES: 3. Slew rate is defined by:
Propagation delay time, low- to high-level output 4 8 12 ns
Propagation delay time, high- to low-level output
Transition time (tr or tf) 3 ns
Output-enable time to high level See Figure 3 10 20 ns
Output-enable time to low level See Figure 4 10 20 ns
Output-disable time from high level See Figure 3 10 20 ns
Output-disable time from low level See Figure 4 10 20 ns
Pulse skew f = 32 MHz, See Note 4 0.5 1.5 ns
Skew limit f = 32 MHz, See Note 5 1.5 ns
Skew limit (device to device) f = 32 MHz, See Note 6 3 ns
ǒ
90%
VOH*
V
SR
+
4. Pulse skew is defined as the |t
5. Skew limit is the difference between any two outputs of the same device switching in the same direction.
6. Skew limit (device to device) is the maximum difference in propagation delay times between any two channels of any two devices.
OL
= 3.3 V, TA = 25°C
CC
Ǔ
*
10%ǒVOH*
t
r
PLH
– t
PHL
See Figure 2
Ǔ
V
OL
, the differential slew rate of VODis 2 SR.
| of each channel of the same device.
4 8 12 ns
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AM26LV31
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
PARAMETER MEASUREMENT INFORMATION
Generator
(see Note B)
G
V
CC
G
Y
A
G
G
Z
V
OD2
RL/2
RL/2
V
OC
Figure 1. Differential and Common-Mode Output Voltages
Input
A
A
50 Ω
Y
Z
RL = 100 Ω
TEST CIRCUIT
50% 50%
CL = 15 pF
(see Note A)
V
0 V
V
V
CC
O
V
OD
O
t
PLH
Output, V
Output, V
NOTES: A. CL includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: PRR = 32 MHz, ZO ≈ 50 Ω, 50% duty cycle,
tr and tf ≤ 2 ns.
Z
O
Y
Y
t
r
O
t
f
Z
Figure 2. Test Circuit and Voltage Waveforms, t
PROPAGATION DELAY TIMES
90% 90%
10%10%
90% 90%
10% 10%
RISE AND FALL TIMES
t
f
t
r
PHL
t
PHL
and t
V
OH
V
OL
V
OH
V
OL
PLH
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5
AM26LV31
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
PARAMETER MEASUREMENT INFORMATION
V
CC
A
S1
Y
Z
Output
Generator
(see Note B)
Input
Output
NOTES: A. CL includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, ZO = 50 Ω, 50% duty cycle,
tr and tf (10% to 90%) ≤ 2 ns.
C. To test the active-low enable G
50 Ω
V
CC
(see Note C)
t
PZH
, ground G and apply an inverted waveform to G.
G
G
TEST CIRCUIT
50% 50%
50%
VOLTAGE WAVEFORMS
CL = 15 pF
(see Note A)
V
0 V
t
PHZ
0.3 V
V
V
CC
OH
off
RL = 110 Ω
≈ 0
Figure 3. Test Circuit and Voltage Waveforms, t
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PZH
and t
PHZ
AM26LV31
LOW-VOLTAGE HIGH-SPEED
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS201E – MAY 1995 – REVISED DECEMBER 1999
PARAMETER MEASUREMENT INFORMATION
V
CC
Generator
(see Note B)
Output
Input
V
CC
50 Ω
(see Note C)
t
PZL
A
G
G
V
CC
TEST CIRCUIT
50% 50%
50%
VOLTAGE WAVEFORMS
V
OL
≈ V
RL = 110 Ω
Output
CC
S1
Y
Z
CL = 15 pF
(see Note A)
V
CC
0 V
t
PLZ
V
off
0.3 V
NOTES: A. CL includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, ZO = 50 Ω, 50% duty cycle,
tr and tf (10% to 90%) ≤ 2 ns.
C. To test the active-low enable G
, ground G and apply an inverted waveform to G.
Figure 4. Test Circuit and Voltage Waveforms, t
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PZL
and t
PLZ
7
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