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Details, datasheet, quote on part number:SN74FB1651PCA
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| Part: | SN74FB1651PCA |
| Category: | Logic => Backplane Logic (GTL, GTLP, FB/FB+, ABTE/ETL) |
| Description: | ti SN74FB1651, 17-Bit Ttl/btl Universal Storage Transceiver With Buffered Clock Lines |
| Company: | Texas Instruments, Inc. |
| Datasheet: | Download SN74FB1651PCA datasheet File size : 143 kB |
| Request For quote: | Find where to buy SN74FB1651PCA
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Datasheet text preview:
SN74FB1651 17-BIT TTL/BTL UNIVERSAL STORAGE TRANSCEIVER WITH BUFFERED CLOCK LINE
SCBS177N OCTOBER 1993 REVISED JUNE 2001
D D D D
Compatible With IEEE Std 1194.1-1991 (BTL) TTL A Port, Backplane Transceiver Logic (BTL) B Port Open-Collector B-Port Outputs Sink 100 mA BIAS VCC Minimizes Signal Distortion During Live Insertion or Withdrawal
D D D
High-Impedance State During Power Up and Power Down B-Port Biasing Network Preconditions the Connector and PC Trace to the BTL High-Level Voltage TTL-Input Structures Incorporate Active Clamping to Aid in Line Termination
PCA PACKAGE (TOP VIEW)
NC VCC GND 1AO6 1AI6 1AO7 1AI7 GND 1AO8 1AI8 1AO9 1AI9 GND 2CLK NC 2AO2 2AI2 GND 2AO3 2AI3 2AO4 2AI4 GND V CC NC
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
1AI5 1AO5 1AI4 1AO4 GND 1AI3 1AO3 1AI2 1AO2 GND 1AI1 1AO1 VCC 1OEA 1OEA 1LE B A 1C LK B A 1C LK A B 1LE A B 1OEB 1OEB BG GND BG V C C GND 1B 1
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
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 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
1B2 GND 1B3 1B4 GND 1B5 1B6 GND 1B7 1B8 GND 1B9 NC 2CLKAB GND 2B2 2B3 GND 2B4 2B5 GND 2B6 2B7 GND 2B8
NC No internal connection
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.
Copyright 2001, 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.
2AO5 2AI5 2AO6 2AI6 GND 2AO7 2AI7 2AO8 2AI8 GND 2AO9 2AI9 VCC 2OEA 2OEA 2LEBA 2CLKBA 2CLKAB 2LEAB 2OEB 2OEB BIAS VCC NC GND 2B9
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
SN74FB1651 17-BIT TTL/BTL UNIVERSAL STORAGE TRANSCEIVER WITH BUFFERED CLOCK LINE
SCBS177N OCTOBER 1993 REVISED JUNE 2001
description
The SN74FB1651 contains an 8-bit and 9-bit transceiver with a buffered clock. The clock and the transceivers are designed to translate signals between TTL and backplane transceiver-logic (BTL) environments. The device is designed specifically to be compatible with IEEE Std 1194.1-1991. The B port operates at BTL-signal levels. The open-collector B ports are specified to sink 100 mA. Two output enables (OEB and OEB) are provided for the B outputs. When OEB is low, OEB is high, or VCC is less than 2.1 V, the B port is turned off. The A port operates at TTL-signal levels. The A outputs reflect the inverse of the data at the B port when the A-port output enable (OEA) is high. When OEA is low or when VCC is less than 2.1 V, the A outputs are in the high-impedance state. BIAS VCC establishes a voltage between 1.62 V and 2.1 V on the BTL outputs when VCC is not connected. BG VCC and BG GND are the supply inputs for the bias generator. ORDERING INFORMATION
TA PACKAGE ORDERABLE PART NUMBER TOP-SIDE MARKING
0°C to 70°C TQFP PCA Tube SN74FB1651PCA FB1651 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.
Function Tables
TRANSCEIVER INPUTS OEA X L L X X H X OEA X H H X X X L OEB H X H L X X X OEB L X L X H X X FUNCTION A data to B bus B data to A bus A data to B bus, B data to A bus B-bus isolation isolation A-bus isolation isolation
STORAGE MODE INPUTS LE H L L CLK X L FUNCTION Transparent Store data Storage
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN74FB1651 17-BIT TTL/BTL UNIVERSAL STORAGE TRANSCEIVER WITH BUFFERED CLOCK LINE
SCBS177N OCTOBER 1993 REVISED JUNE 2001
functional block diagram
81 1OEB 80 1OEB 83
1CLKAB
1LEAB
82
1LEBA
85
1CLKBA 1OEA 1OEA
84 87 86 Transceiver 90 1D C2 C1 89 1D C2 C1 76 1B1
1AI1
1AO1
To Eight Other Channels
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
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