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 

     

SLLS202E − MAY 1995 − REVISED JUNE 2005

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Switching Rates up to 32 MHz

D Operates From Single 3.3-V Supply

D Ultra-Low Power Dissipation . . . 27 mW Typ

D Open-Circuit, Short-Circuit, and Terminated

Fail-Safe

D −0.3-V to 5.5-V Common-Mode Range With

±200-mV Sensitivity

D Accepts 5-V Logic Inputs With 3.3-V V

D Input Hysteresis . . . 50 mV Typ

D 235 mW With Four Receivers at 32 MHz

D Pin-to-Pin Compatible With AM26C32,

AM26LS32, and MB570

description/ordering information

The AM26LV32, BiCMOS, quadruple, differential line receiver with 3-state outputs is designed to be similar to

TIA/EIA-422-B and ITU Recommendation V.11 receivers with reduced common-mode voltage range due to

reduced supply voltage.

The device is optimized for balanced bus transmission at switching rates up to 32 MHz. The enable function

is common to all four receivers and offers a choice of active-high or active-low inputs. The 3-state outputs permit

connection directly to a bus-organized system. Each device features receiver high input impedance and input

hysteresis for increased noise immunity, and input sensitivity of ±200 mV over a common-mode input voltage

range from −0.3 V to 5.5 V. When the inputs are open circuited, the outputs are in the high logic state. This device

is designed using the Texas Instruments (TI) proprietary LinIMPACT-C60 technology, facilitating ultra-low

power consumption without sacrificing speed.

This device offers optimum performance when used with the AM26LV31 quadruple line drivers.

The AM26LV32C is characterized for operation from 0°C to 70°C. The AM26LV32I is characterized for operation

from −45°C to 85°C.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

AM26LV32CDG4

D Tape and reel

AM26LV32CDR

AM26LV32C

0°C to 70°C

Tape and reel

AM26LV32CDRG4

AM26LV32C

0 C to 70 C

Tube AM26LV32CNS

26LV32

Tape and reel AM26LV32CNSR

26LV32

SOP – D

Tube

AM26LV32ID

AM26LV32I

−40°C to 85°C

SOP – D

Tube

AM26LV32IDR

AM26LV32I

−40

C to 85

SOP – NS

Tube AM26LV32INS

26LV32I

SOP – NS

Tape and reel AM26LV32INSR

26LV32I

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB

design guidelines are available at www.ti.com/sc/package.

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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.

LinIMPACT-C60 and TI are trademarks of Texas Instruments.

GND

D OR NS

†

PACKAGE

(TOP VIEW)

Summary of content (23 pages)

PAGE 1
SLLS202E − MAY 1995 − REVISED JUNE 2005 D D D D D D D D D D OR NS† PACKAGE (TOP VIEW) Switching Rates up to 32 MHz Operates From Single 3.3-V Supply Ultra-Low Power Dissipation . . . 27 mW Typ Open-Circuit, Short-Circuit, and Terminated Fail-Safe −0.3-V to 5.5-V Common-Mode Range With ± 200-mV Sensitivity Accepts 5-V Logic Inputs With 3.3-V VCC Input Hysteresis . . .
PAGE 2
SLLS202E − MAY 1995 − REVISED JUNE 2005 FUNCTION TABLE (each receiver) DIFFERENTIAL INPUT ENABLES OUTPUT G G VID ≥ 0.2 V H X X L H H −0.2 V < VID < 0.2 V H X X L ? ? VID ≤ − 0.2 V H X X L L L Open, shorted, or terminated† H X X L H H X L H Z H = high level, L = low level, X = irrelevant, Z = high impedance (off), ? = indeterminate † See application information attached.
PAGE 3
SLLS202E − MAY 1995 − REVISED JUNE 2005 schematics of equivalent inputs and outputs EQUIVALENT OF EACH INPUT (A, B) TYPICAL OF ALL OUTPUTS (Y) EQUIVALENT OF EACH ENABLE INPUT (G, G) VCC VCC VCC 7.2 kΩ 1.5 kΩ Enable G, G A, B 15 kΩ 100 Ω Y 1.5 kΩ 7.2 kΩ GND GND GND absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . .
PAGE 4
SLLS202E − MAY 1995 − REVISED JUNE 2005 electrical characteristics over recommended supply-voltage and operating free-air temperature ranges (unless otherwise noted) PARAMETER TEST CONDITIONS VIT+ VIT− Differential input high-threshold voltage VIK VOH Enable input clamp voltage VOL IOZ Low-level output voltage IIH(E) IIL(E) High-level enable input current rI Input resistance II ICC Input current High-impedance-state
PAGE 5
SLLS202E − MAY 1995 − REVISED JUNE 2005 PARAMETER MEASUREMENT INFORMATION A Generator (see Note B) Y VO B 50 Ω CL = 15 pF (see Note A) 50 Ω A 2V B 1V Input tPLH Output VCC tPHL 90% 50% 10% G G (see Note C) 90% tr VOH 50% 10% V OL tf NOTES: A. CL includes probe and jig capacitance. B.
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SLLS202E − MAY 1995 − REVISED JUNE 2005 PARAMETER MEASUREMENT INFORMATION VCC RL = 2 kΩ A VID = 1 V Y VO B CL = 15 pF (see Note A) G Generator (see Note B) 50 Ω G VCC (see Note C) VCC Input 50% 50% 0V tPZL tPLZ Voff ≈ VCC Output 50% VOL + 0.3 V VOL NOTES: A. CL includes probe and jig capacitance. B.
PAGE 7
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION fail-safe conditions The AM26LV32 quadruple differential line receiver is designed to function properly when appropriately connected to active drivers. Applications do not always have ideal situations where all bits are being used, the receiver inputs are never left floating, and fault conditions don’t exist.
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SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION Table 1. Active Receiver Inputs vs Outputs 1, 2, OR 3 ACTIVE INPUTS SEE FIGURE 1, 2, OR 3 ACTIVE OUTPUTS 3, 2, OR 1 UNUSED OR INACTIVE OUTPUTS VIL† 900 mV VID 200 mV VIC† 1V 4 Known state High state −100 mV 200 mV 0V 5 Known state ? 600 mV 800 mV 1V 6 Known state High state 0 800 mV 400 mV 7 Known state ? † Measured with respect to ground.
PAGE 9
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION In most applications, it is not customary to have a common-mode input close to ground and to have a differential voltage larger than 2 V. Since the common-mode input voltage is typically around 1.5 V, a 2-V VID would result in a VIL of 0.5 V, thus satisfying the recommended VIL level of greater than 0.4 V.
PAGE 10
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION Figure 9 represents a typical application where two receivers are not used. In this case, there is no need to worry about the output voltages of the unused receivers since they are not connected in the system architecture. AM26LV32 Connector RT System RT Unused Circuit Figure 9.
PAGE 11
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION Figure 11 is an alternative application design to replace the application in Figure 10. This design uses two AM26LV32 devices, instead of one. However, this design does not require the input levels be monitored to ensure the outputs are in the correct state, only that they comply to the RS-232 standard.
PAGE 12
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION Figures 12 and 13 show typical applications where a disconnected cable occurs. Figure 12 illustrates a typical application where a cable is disconnected. Similar to Figure 10, the active input levels must be monitored to make sure the inactive receiver outputs are in a high state. An alternative solution is shown in Figure 13.
PAGE 13
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION Figure 13 is an alternative solution so the receiver inputs do not have to be monitored. This solution also requires the use of two AM26LV32 devices, instead of one. Driver AM26LV32 Connector Connector Cable RT RT Unused Circuit System AM26LV32 Unplugged Cable RT RT Unused Circuit Figure 13.
PAGE 14
SLLS202E − MAY 1995 − REVISED JUNE 2005 APPLICATION INFORMATION When designing a system using the AM26LV32, the device provides a robust solution where fail-safe and fault conditions are of concern. The RS-422-like inputs accept common-mode input levels from −0.3 V to 5.5 V with a specified sensitivity of ±200mV.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant AM26LV32CDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 AM26LV32CDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 AM26LV32CDRG4 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) AM26LV32CDR SOIC D 16 2500 333.2 345.9 28.6 AM26LV32CDR SOIC D 16 2500 367.0 367.0 38.0 AM26LV32CDRG4 SOIC D 16 2500 333.2 345.9 28.6 AM26LV32IDR SOIC D 16 2500 333.2 345.9 28.
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