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SN74CBT34X245 Datasheet

Part Number SN74CBT34X245
Manufacturers Texas Instruments
Logo Texas Instruments
Description 32-Bit FET Bus Switch
Datasheet SN74CBT34X245 DatasheetSN74CBT34X245 Datasheet (PDF)

D Member of Texas Instruments’ Widebus + Family D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels D Flow-Through Architecture Optimizes PCB Layout D Ioff Supports Partial-Power-Down Mode Operation D Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II D ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) description The SN74CBT34X245 provides 32 bits of high-speed TTL-compatible bus swit.

  SN74CBT34X245   SN74CBT34X245






32-Bit FET Bus Switch

D Member of Texas Instruments’ Widebus + Family D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels D Flow-Through Architecture Optimizes PCB Layout D Ioff Supports Partial-Power-Down Mode Operation D Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II D ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) description The SN74CBT34X245 provides 32 bits of high-speed TTL-compatible bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as four 8-bit bus switches, two 16-bit bus switches, or one 32-bit bus switch. When output enable (OE) is low, the switch is on, and port A is connected to port B. When OE is high, the switch is open, and the high-impedance state exists between the two ports. This device is fully specified for partial-powerdown applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. SN74CBT34X245 32-BIT FET BUS SWITCH SCDS089C – MAY 1999 – REVISED MAY 2001 DBB PACKAGE (TOP VIEW) NC 1 1A1 2 1A2 3 1A3 4 1A4 5 1A5 6 1A6 7 1A7 8 1A8 9 GND 10 NC 11 2A1 12 2A2 13 2A3 14 2A4 15 2A5 16 2A6 17 2A7 18 2A8 19 GND 20 NC 21 3A1 22 3A2 23 3A3 24 3A4 25 3A5 26 3A6 27 3A7 28 3A8 29 GND 30 NC 31 4A1 32 4A2 33 4A3 34 4A4 35 4A5 36 4A6 37 4A7 38 4A8 39 GND 40 80 VCC 79 1OE 78 1B1 77 1B2 76 1B3 7.


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