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74ABT16646CSSC Datasheet

  • 74ABT16646CSSC

  • 16-Bit Transceivers and Registers with 3-STATE Outputs

  • 86.67KB

  • 9頁(yè)

  • FAIRCHILD

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74ABT16646 16-Bit Transceivers and Registers with 3-STATE Outputs
October 1993
Revised November 1999
74ABT16646
16-Bit Transceivers and Registers with 3-STATE Outputs
General Description
The ABT16646 consists of bus transceiver circuits with 3-
STATE, D-type flip-flops, and control circuitry arranged for
multiplexed transmission of data directly from the input bus
or from the internal registers. Data on the A or B bus will be
clocked into the registers as the appropriate clock pin goes
to a high logic level. Control OE and direction pins are pro-
vided to control the transceiver function. In the transceiver
mode, data present at the high impedance port may be
stored in either the A or the B register or in both. The select
controls can multiplex stored and real-time (transparent
mode) data. The direction control determines which bus
will receive data when the enable control OE is Active
LOW. In the isolation mode (control OE HIGH), A data may
be stored in the B register and/or B data may be stored in
the A register.
Features
s
Independent registers for A and B buses
s
Multiplexed real-time and stored data
s
A and B output sink capability of 64 mA, source
capability of 32 mA
s
Guaranteed latchup protection
s
High impedance glitch free bus loading during entire
power up and power down cycle
s
Nondestructive hot insertion capability
Ordering Code:
Order Number
74ABT16646CSSC
74ABT16646CMTD
Package Number
MS56A
MTD56
Package Description
56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300鈥?Wide
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter 鈥淴鈥?to the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
A
0
鈥揂
15
Description
Data Register A Inputs/
3-STATE Outputs
B
0
鈥揃
15
Data Register B Inputs/
3-STATE Outputs
CPAB
n
, CPBA
n
SAB
n
, SBA
n
OE
n
DIR
Clock Pulse Inputs
Select Inputs
Output Enable Input
Direction Control Input
漏 1999 Fairchild Semiconductor Corporation
DS011644
www.fairchildsemi.com

74ABT16646CSSC 產(chǎn)品屬性

  • 25

  • 集成電路 (IC)

  • 邏輯 - 緩沖器，驅(qū)動(dòng)器，接收器，收發(fā)器

  • 74ABT

  • 寄存收發(fā)器，非反相

  • 2

  • 8

  • 32mA，64mA

  • 4.5 V ~ 5.5 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 56-BSSOP（0.295"，7.50mm 寬）

  • 56-SSOP

  • 管件

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