Datasheet

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SN74ABTE16246

11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER

WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS

SCBS227J – JULY 1993 – REVISED AUGUST 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Member of the Texas Instruments

Widebus Family

Supports the VME64 ETL Specification

Reduced TTL-Compatible Input Threshold

Range

High-Drive Outputs (I

= –60 mA,

= 90 mA) Support Equivalent 25-Ω

Incident-Wave Switching

BIAS Pin Minimizes Signal Distortion

During Live Insertion

Internal Pullup Resistor on OE Keeps

Outputs in High-Impedance State During

Power Up or Power Down

Distributed V

and GND Pins Minimize

High-Speed Switching Noise

Equivalent 25-Ω Series Damping Resistor

on B Port

Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

description/ordering information

The SN74ABTE16246 is an 11-bit noninverting

transceiver designed for asynchronous two-way

communication between buses. This device has

open-collector and 3-state outputs. The device

allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level

at the direction-control (DIR) input. The output-enable (OE

) input can be used to disable the device so that the

buses are effectively isolated. When OE

is low, the device is active.

The B port has an equivalent 25-Ω series output resistor to reduce ringing. Active bus-hold inputs on the B port

hold unused or floating inputs at a valid logic level.

The A port provides for the precharging of the outputs via V

BIAS, which establishes a voltage between 1.3 V

and 1.7 V when V

is not connected.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors

with the bus-hold circuitry is not recommended.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

–40 C to 85 C

SSOP – DL

Tube SN74ABTE16246DL

ABTE16246

–40

C to 85

SSOP – DL

Tape and reel SN74ABTE16246DLR

ABTE16246

TSSOP – DGG Tape and reel SN74ABTE16246DGGR ABTE16246

†

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

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

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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications o

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Widebus is a trademark of Texas Instruments.

DGG OR DL PACKAGE

(TOP VIEW)

11OE

11DIR

11B

GND

10B

8BI

8BO

GND

7BO

6BI

6BO

5BO

GND

4BO

4BI

3BO

2BI

GND

2BO

1BO

1BI

BIAS

11A

10DIR

GND

10A

9DIR

GND

7BI

GND

5BI

3BI

GND

Summary of content (12 pages)

PAGE 1
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 D D D D D D D D D DGG OR DL PACKAGE (TOP VIEW) Member of the Texas Instruments Widebus Family Supports the VME64 ETL Specification Reduced TTL-Compatible Input Threshold Range High-Drive Outputs (IOH = –60 mA, IOL = 90 mA) Support Equivalent 25-Ω Incident-Wave Switching VCCBIAS Pin Minimizes Signal Distortion During Live Insertion Internal Pullup Resistor on OE
PAGE 2
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 FUNCTION TABLE INPUTS OPERATION OE 9DIR 10DIR 11DIR 11OE H X X X X L X X X X L L X X X 9A data to 9B bus L H X X X 9B data to 9A bus L X L X X 10A data to 10B bus L X H X X 10B data to 10A bus L X X L L 11A data to 11B bus L X X L H 11A, 11B isolation L X X H X 11B data to 11A bus Isolation 1BI–8BI data to
PAGE 3
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 logic diagram (positive logic) 11OE 11DIR 11B 1 2 3 47 OE 10DIR 10B 25 46 5 44 9DIR 9B 1BO 10A 41 6 43 1BI 11A 26 24 9A 1A 23 To Seven Other Channels POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3
PAGE 4
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC and VCCBIAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input voltage range, VI (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.
PAGE 5
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK B port VOH VCC = 4.5 V, VCC = 5.5 V, II = –18 mA IOH = –100 µA VCC = 4.5 V IOH = –1 mA IOH = –12 mA VCC = 5.5 V, 9A–11A IOH TEST CONDITIONS 1A–8A B port VCC = 4.5 V VCC = 4.5 V, IOH = –64 mA VOH = 5.5 V II IOZH‡ IOZL‡ IO UNIT –1.
PAGE 6
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 live-insertion specifications over recommended operating free-air temperature range PARAMETER TEST CONDITIONS ICC (VCCBIAS) VCC = 0 to 4.5 V, VCC = 4.5 V to 5.5 V‡, VCCBIAS = 4.5 V to 5.5 V, VCCBIAS = 4.5 V to 5.5 V, VO A port VCC = 0 VCCBIAS = 4.5 V to 5.5 V VCCBIAS = 4.75 V to 5.25 V IO A port VCC = 0, VCCBIAS = 4.
PAGE 7
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 extended switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 2) PARAMETER tPLH FROM (INPUT) TO (OUTPUT) LOAD 9B–11B 9A–11A RX = 13 Ω 1B–8B 1A–8A RX = 13 Ω 9B–11B 9A–11A RX = 26 Ω 1B–8B 1A–8A RX = 26 Ω 9B–11B 1A–8A RX = 56 Ω 1B–8B 1A–8A RX = 56 Ω
PAGE 8
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION Device 1 A Y1 A B Y2 Yn Device 1 – Y1 tPLH1 tPHL1 tsk(o) tsk(load) In Device n Device 1 – Yn tsk(temp) Y1 tPLH2 Device n – Yn B Y2 Yn NOTES: A. Pulse skew, tsk(p), is defined as the difference in propagation-delay times tPLH1 and tPHL1 on the same terminal at identical operating conditions. B.
PAGE 9
SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVER WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227J – JULY 1993 – REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION 7V Open S2 3.
PAGE 10
MECHANICAL DATA MSSO001C – JANUARY 1995 – REVISED DECEMBER 2001 DL (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 48 PINS SHOWN 0.025 (0,635) 0.0135 (0,343) 0.008 (0,203) 48 0.005 (0,13) M 25 0.010 (0,25) 0.005 (0,13) 0.299 (7,59) 0.291 (7,39) 0.420 (10,67) 0.395 (10,03) Gage Plane 0.010 (0,25) 1 0°–ā8° 24 0.040 (1,02) A 0.020 (0,51) Seating Plane 0.110 (2,79) MAX 0.004 (0,10) 0.008 (0,20) MIN PINS ** 28 48 56 A MAX 0.380 (9,65) 0.630 (16,00) 0.730 (18,54) A MIN 0.370 (9,40) 0.
PAGE 11
MECHANICAL DATA MTSS003D – JANUARY 1995 – REVISED JANUARY 1998 DGG (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 48 PINS SHOWN 0,27 0,17 0,50 48 0,08 M 25 6,20 6,00 8,30 7,90 0,15 NOM Gage Plane 1 0,25 24 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 48 56 64 A MAX 12,60 14,10 17,10 A MIN 12,40 13,90 16,90 DIM 4040078 / F 12/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice.
PAGE 12
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