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Details, datasheet, quote on part number:SN74ABT32245PZ
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Datasheet text preview:
SN54ABT32245, SN74ABT32245 36-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCBS228C JUNE 1992 APRIL 1995
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Members of the Texas Instruments Widebus + TM Family State-of-the-Art EPIC-BTM BiCMOS Design Significantly Reduces Power Dissipation Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17 Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 5 V, TA = 25°C
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Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise High-Drive Outputs ( 32-mA IOH, 64-mA IOL ) Bus-Hold Inputs Eliminate the Need for External Pullup Resistors Packaged in 100-Pin Plastic Thin Quad Flat (PZ) Package With 14 × 14-mm Body Using 0.5-mm Lead Pitch
SN74ABT32245 . . . PZ PACKAGE (TOP VIEW)
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
1A9 2A1 GND 2A2 2A3 2A4 2A5 GND 2A6 2A7 2A8 2A9 VCC 3A1 3A2 3A3 3A4 GND 3A5 3A6 3A7 3A8 GND 3A9 4A1
1A 8 1A 7 1A 6 GND 1A 5 1A 4 1A 3 1A 2 1A 1 GND 1DIR 1OE VCC 2OE 2DIR GND 1B 1 1B 2 1B 3 1B 4 1B 5 GND 1B 6 1B 7 1B 8
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
1B9 2B1 GND 2B2 2B3 2B4 2B5 GND 2B6 2B7 2B8 2B9 VCC 3B1 3B2 3B3 3B4 GND 3B5 3B6 3B7 3B8 GND 3B9 4B1
description
The ABT32245 are 36-bit (quad 9-bit) noninverting 3-state transceivers designed for synchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. These devices can be used as four 9-bit transceivers, two18-bit transceivers, or one 36-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) inputs. The output-enable (OE) inputs can be used to disable the device so that the buses are effectively isolated.
Widebus+ and EPIC-B 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.
4A2 4A3 4A4 GND 4A5 4A6 4A7 4A8 4A9 GND 4DIR 4OE VCC 3OE 3DIR GND 4B9 4B8 4B7 4B6 4B5 GND 4B4 4B3 4B2
Copyright © 1995, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
SN54ABT32245, SN74ABT32245 36-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCBS228C JUNE 1992 APRIL 1995
description (continued)
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. Active bus-hold circuitry holds unused or floating data inputs at a valid logic level. The SN54ABT32245 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ABT32245 is characterized for operation from 40°C to 85°C.
FUNCTION TABLE (each 9-bit section) INPUTS OE L L H DIR L H X OPERATION B data to A bus A data to B bus Isolation
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ABT32245, SN74ABT32245 36-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCBS228C JUNE 1992 APRIL 1995
logic diagram (positive logic)
1DIR 90 3DIR 89 One of Nine Channels 3A1 40
1OE One of Nine Channels
39
3OE
1A1
92
14
84
1B1
62
3B1
To Eight Other Channels
To Eight Other Channels
2DIR
86
4DIR 87 One of Nine Channels 4A1
36
2OE One of Nine Channels
37
4OE
2A1
2
25
74
2B1
51
4B1
To Eight Other Channels
To Eight Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Input voltage range, VI (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Voltage range applied to any output in the high state or power-off state, VO . . . . . . . . . . . . . 0.5 V to 5.5 V Current into any output in the low state, IO: SN54ABT32245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74ABT32245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Maximum power dissipation at TA = 55°C (in still air) (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 W Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°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. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 75 mils. For more information, refer to the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology Data Book, literature number SCBD002B.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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