74ACT16470 Datasheet, PDF (1/9 Pages) Texas Instruments – 16-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS

54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
D Members of the Texas Instruments
Widebus ™ Family
D Inputs Are TTL-Voltage Compatible
D Flow-Through Architecture Optimizes
PCB Layout
D Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D EPIC™ (Enhanced-Performance Implanted
CMOS) 1-µm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Shrink
Small-Outline 300-mil (DL) Packages Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Packages Using 25-mil Center-to-Center
Pin Spacings
description
The ’ACT16470 are 16-bit registered transceivers
that contain two sets of D-type flip-flops for
temporary storage of data flowing in either
direction. They can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate
clock (CLKAB or CLKBA) and output-enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow.
The A-to-B enable (CEAB) input must be low to
enter data from A or to output data to B. If both
CEAB and CLKAB are low, then B port will have
the level of A port prior to the most recent
low-to-high transition of CLKAB. Data flow from B
to A is similar, but requires the use of CEBA,
CLKBA, and OEBA inputs.
54ACT16470 . . . WD PACKAGE
74ACT16470 . . . DL PACKAGE
(TOP VIEW)
1OEAB ¹
1CLKAB ²
1CEAB ³
GND ⁴
1A1 ⁵
1A2 ⁶
V_CC ⁷
1A3 ⁸
1A4 ⁹
1A5 ¹⁰
GND ¹¹
1A6 ¹²
1A7 ¹³
1A8 ¹⁴
2A1 ¹⁵
2A2 ¹⁶
2A3 ¹⁷
GND ¹⁸
2A4 ¹⁹
2A5 ²⁰
2A6 ²¹
V_CC ²²
2A7 ²³
2A8 ²⁴
GND ²⁵
2CEAB ²⁶
2CLKAB ²⁷
2OEAB ²⁸
56 _1OEBA
55 _1CLKBA
54 _1CEBA
53 _GND
52 _1B1
51 _1B2
50 _VCC
49 _1B3
48 _1B4
47 _1B5
46 _GND
45 _1B6
44 _1B7
43 _1B8
42 _2B1
41 _2B2
40 _2B3
39 _GND
38 _2B4
37 _2B5
36 _2B6
35 _VCC
34 _2B7
33 _2B8
32 _GND
31 _2CEBA
30 _2CLKBA
29 _2OEBA
To avoid false clocking of the flip-flops, CE should not be switched from high to low while CLK is high.
The 74ACT16470 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and
functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16470 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74ACT16470 is characterized for operation from –40°C to 85°C.
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.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
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Copyright © 1996, Texas Instruments Incorporated
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