BTK1A AGERE | Alldatasheet

Document overview

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Technical content

Features

I Two line drivers per package I Logic to convert TTL input logic levels to differential, pseudo-emitter coupled logic (ECL) output logic levels I No line loading when VCC = 0 V I High output driver for 50 Ω loads I 200 mA short-circuit current (typical) I 2.0 ns maximum propagation delay I <0.2 ns output skew (typical) Receiver Features I Two line receivers per package I High input impedance ≅ 8 kΩ I Logic that converts differential input logic levels to transistor-transistor logic (TTL) output logic levels I 4.0 ns maximum propagation delay I <0.20 V input sensitivity (typical) I −1.2 V to +7.2 V common-mode range Common Device Features I Common enable for each driver/receiver pair I Operating temperature range: –40 °C to +125 °C (wider than the 41 Series) I Single 5.0 V ± 10% supply I 400 Mbits/s maximum data rate I Meets enhanced small device interface (ESDI) standards I Electrostatic discharge (ESD) performance better than the 41 Series I Lower power requirement than the 41 Series

Description

The BTK1A and BTM1A devices are dual differential transceiver circuits that transmit and receive digital data over balanced transmission lines and are compatible with Agere Systems Inc. quad differential drivers and receivers. The dual drivers translate input TTL logic levels to differential pseudo-ECL output levels. The dual receivers convert differential input logic levels to TTL output levels. Each driver/receiver pair has its own common enable control allowing serial data and a control clock to be transmitted and received on a single integrated circuit. The BTK1A transceiver requires the customer to supply termination resistors on the circuit board. The BTM1A transceiver has an internal resistor termination for both the driver outputs (220 Ω ) and receiver inputs (110 Ω ), eliminating the need for external resistors on the circuit board when used with 100 Ω impedance, twisted-pair (or flat) cable. These transceivers replace the Agere 41 Series transceivers. The powerdown loading characteristics of the receiver input circuit are approximately 8 k Ω relative to the power supplies; hence, they will not load the transmission line when the circuit is powered down. For those circuits with termination resistors, the line will remain impedance matched when the circuit is powered down. The driver does not load the line when it is powered down. The packaging options that are available for the dual differential transceivers include a 16-pin DIP; a 16-pin, J-lead SOJ; a 16-pin, gull-wing SOIC; and a 16-pin, narrow-body, gull-wing SOIC.

Figure 1. Differential Transceiver Logic Diagrams Table 1. Enable Truth Table extended periods can adversely affect device reliability. Table 2. Absolute Maximum Ratings

Agere Systems Inc. 3 Data Sheet October 2001 BTK1A and BTM1A Dual Differential Transceivers

Electrical Characteristics

For variations in electrical characteristics over the temperature range, see Figure 10 on page 10 through Figure 12 on page 11. Table 3. Power Supply Current Characteristics These drivers produce pseudo-ECL levels, and the third-state mode is different than the conventional TTL devices. as 1 V without significantly affecting the amplitude of the driving signal.

Table 4. Driver Voltage and Current Characteristics For variations in output voltage over the temperature range, see Figure 10 and Figure 11. TA = −40 °C to +125 °C.

  • Values are with terminations as per Figure 7.

† The input levels and difference voltage provide zero noise immunity and should be tested only in a static, noise-free environment. ‡ Test must be performed one lead at a time to prevent damage to the device.

Table 5. Receiver Voltage and Current Characteristics For variation in minimum VOH and maximum VOL over the temperature range, see Figure 10.

  • The input levels and difference voltage provide zero noise immunity and should be tested only in a static, noise-free environment.

‡ Test must be performed one lead at a time to prevent damage to the device.

Table 6. Driver Timing Characteristics (See Figure 3 and Figure 4.) connected to output is shown in Figure 7. TA = −40 °C to +125 °C, VCC = 5 V ± 0.5 V.

  • tP1 and tP2 are measured from the 1.5 V point of the input to the crossover point of the outputs (see Figure 3).

† CL = 5 pF. Capacitor is connected from each output to ground. Table 7. Receiver Timing Characteristics (See Figure 5 and Figure 6.) test circuit connected to output is shown in Figure 8. TA = −40 °C to +125 °C, VCC = 5 V ± 0.5 V.

  1. Assume that all electronic components are sensitive to ESD damage.
  2. Never touch a sensitive component unless properly grounded.
  3. Never transport, store, or handle sensitive components except in a static-safe environment.
  4. A human-body model (HBM) that is used by most of the industry for ESD-susceptibility testing and protection-

design evaluation. ESD voltage thresholds are dependent on the critical parameters used to define the model.

  1. A charged-device model (CDM), which many believe is the better simulator of electronics manufacturing

The HBM ESD threshold voltage presented here was obtained by using these circuit parameters. Table 8. Typical ESD Thresholds for Data Transmission Transceivers Table 9. ESD Damage Protection

that level after the stress is removed. (previously JC-40.2) CMOS Latch-Up Standardized Test Procedure.

  1. dc current stressing of input and output pins.
  2. Power supply overvoltage.

Table 10. Latch-Up Test Criteria and Test Results are considered not susceptible to latch-up.

14 Agere Systems Inc. Data Sheet October 2001BTK1A and BTM1A Dual Differential Transceivers Outline Diagrams 16-Pin DIP Dimensions are in millimeters. 5-4410(F) Note: The dimensions in this outline diagram are intended for informational purposes only. For detailed schematics to assist your design efforts, please contact your Agere Sales Representative. Package (N) Package Dimensions Maximum Length (L) Maximum Width Without Leads (B) Maximum Width Including Leads (W) Maximum Height Above Board (H) PDIP3 (Plastic Dual-In-Line Package) 16 20.57 6.48 7.87 5.08 W H 0.58 MAX2.54 TYP

0.38 MIN

N PIN #1 IDENTIFIER ZONE L B

Agere Systems Inc. 15 Data Sheet October 2001 BTK1A and BTM1A Dual Differential Transceivers Outline Diagrams (continued) 16-Pin SOIC (SONB/SOG) Dimensions are in millimeters. 5-4414(F) Note: The dimensions in this outline diagram are intended for informational purposes only. For detailed schematics to assist your design efforts, please contact your Agere Sales Representative. Package (N) Package Dimensions Maximum Length (L) Maximum Width Without Leads (B) Maximum Width Including Leads (W) Maximum Height Above Board (H) SONB (Small- Outline, Narrow Body) 16 10.11 4.01 6.17 1.73 SOG (Small- Outline, Gull- Wing) 16 10.49 7.62 10.64 2.67 W

0.610.51 MAX

H

0.28 MAX

0.10 SEATING PLANE

1.27 TYP

N L B PIN #1 IDENTIFIER ZONE

16 Agere Systems Inc. Data Sheet October 2001BTK1A and BTM1A Dual Differential Transceivers Outline Diagrams (continued) 16-Pin SOIC (SOJ) Dimensions are in millimeters. 5-4413(F)r.3 Note: The dimensions in this outline diagram are intended for informational purposes only. For detailed schematics to assist your design efforts, please contact your Agere Sales Representative. Package (N) Package Dimensions Maximum Length (L) Maximum Width Without Leads (B) Maximum Width Including Leads (W) Maximum Height Above Board (H) SOJ (Small- Outline, J-Lead) 16 10.41 7.62 8.81 3.18 N PIN #1 IDENTIFIER ZONE 0.51 MAX 0.79 MAX 0.10 SEATING PLANE H W B L

Copyright © 2001 Agere Systems Inc. All Rights Reserved October 2001 DS02-011HSI (Replaces DS99-009HSI) Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen) JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 778-8833, TAIWAN: (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 7000 624624, FAX (44) 1344 488 045 Data Sheet October 2001BTK1A and BTM1A Dual Differential Transceivers

Ordering Information

  • Indicates on-chip output terminating resistors from each driver output to ground. † Indicates on-chip input terminations across receiver inputs. Part Number Driver Termination* Receiver Termination† Package Type Comcode Former Pkg. Type Former Part Number BTK1A16E None None 16-pin, Plastic SOJ 107950347 1041 LK, MK BTK1A16E-TR None None Tape & Reel SOJ 107950354 1041 LK, MK, -TR BTK1A16G None None 16-pin, Plastic SOIC 107950362 1141 LK, MK BTK1A16G-TR None None Tape & Reel SOIC 107950370 1141 LK, MK, -TR BTK1A16NB None None Plastic SOIC/NB 107950388 1241 LK, MK BTK1A16NB-TR None None Tape & Reel SOIC/NB 107950396 1241 LK, MK, -TR BTK1A16P None None 16-pin, Plastic DIP 107950404 41 LK, MK BTM1A16E 220 Ω 110 Ω 16-pin, Plastic SOJ 107950537 1041 LM, MM BTM1A16E-TR 220 Ω 110 Ω Tape & Reel SOJ 107950545 1041 LM, MM, -TR BTM1A16G 220 Ω 110 Ω 16-pin, Plastic SOIC 107950552 1141 LM, MM BTM1A16G-TR 220 Ω 110 Ω Tape & Reel SOIC 107950560 1141 LM, MM, -TR BTM1A16NB 220 Ω 110 Ω Plastic SOIC/NB 107950578 1241 LM, MM BTM1A16NB-TR 220 Ω 110 Ω Tape & Reel SOIC/NB 107950586 1241 LM, MM, -TR BTM1A16P 220 Ω 110 Ω 16-pin, Plastic DIP 107950594 41 LM, MM