SN74ALVCH16952_08 Datasheet, PDF (1/17 Pages) Texas Instruments – 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS

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FEATURES
• Member of the Texas Instruments Widebus™
Family
• EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
• ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
• Latch-Up Performance Exceeds 500 mA Per
JESD 17
• Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
• Package Options Include Plastic 300-mil
Shrink Small-Outline (DL), Thin Shrink
Small-Outline (DGG), and Thin Very
Small-Outline (DGV) Packages
DESCRIPTION
This 16-bit registered transceiver is designed for
1.65-V to 3.6-V V_CC operation.
The SN74ALVCH16952 contains two sets of D-type
flip-flops for temporary storage of data flowing in
either direction. This device can be used as two 8-bit
transceivers or one 16-bit transceiver. Data on the A
or B bus is stored in the registers on the low-to-high
transition of the clock (CLKAB or CLKBA) input,
provided that the clock-enable (CLKENAB or
CLKENBA) input is low. Taking the output-enable
(OEAB or OEBA) input low accesses the data on
either port.
To ensure the high-impedance state during power up
or power down, OE should be tied to V_CC through a
pullup resistor; the minimum value of the resistor is
determined by the current-sinking capability of the
driver.
SN74ALVCH16952
16-BIT REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES011E – JULY 1995 – REVISED SEPTEMBER 2004
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1OEAB 1
1CLKAB 2
1CLKENAB 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
2CLKENAB ²⁶
2CLKAB ²⁷
2OEAB ²⁸
56 1OEBA
55 1CLKBA
54 1CLKENBA
53 GND
52 1B1
51 1B2
50 V_CC
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 _2CLKENBA
30 _2CLKBA
29 _2OEBA
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH16952 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.
Widebus, EPIC are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1995–2004, Texas Instruments Incorporated