SN74SSTL16837A Datasheet, PDF (1/6 Pages) Texas Instruments – 20-BIT SSTL_3 INTERFACE UNIVERSAL BUS DRIVER WITH 3-STATE OUTPUTS

SN74SSTL16837A
20-BIT SSTL_3 INTERFACE UNIVERSAL BUS DRIVER
WITH 3-STATE OUTPUTS
SCBS675G – SEPTEMBER 1996 – REVISED SEPTEMBER 1998
D Member of the Texas Instruments
Widebus™ Family
D Supports SSTL_3 Signal Inputs and
Outputs
D Flow-Through Architecture Optimizes PCB
Layout
D Meets SSTL_3 Class I and Class II
Specifications
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D Packaged in Plastic Thin Shrink
Small-Outline Package
description
This 20-bit universal bus driver is designed for 3-V
to 3.6-V V_CC operation and SSTL_3 or LVTTL I/O
levels.
Data flow from A to Y is controlled by the
output-enable (OE) input. The device operates in
the transparent mode when latch enable (LE) is
high. The A data is latched if LE is low and clock
(CLK) is held at a high or low logic level. If LE is
low, the A data is stored in the latch/flip-flop on the
low-to-high transition of CLK. When OE is high,
the outputs are in the high-impedance state.
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.
The SN74SSTL16837A is characterized for
operation from 0°C to 70°C.
DGG PACKAGE
(TOP VIEW)
Y1 ₁
Y2 ₂
GND ₃
Y3 ₄
Y4 ₅
V_{DDQ 6}
Y5 ₇
Y6 ₈
GND ₉
Y7 ₁₀
Y8 ₁₁
V_{DDQ 12}
Y9 ₁₃
Y10 ₁₄
GND 15
OE ₁₆
V_{REF 17}
GND 18
Y11 19
Y12 20
V_DDQ 21
Y13 ₂₂
Y14 23
GND 24
Y15 25
Y16 26
V_DDQ 27
Y17 28
Y18 29
GND 30
Y19 31
Y20 32
64 ^A1
63 ^A2
62 ^GND
61 ^A3
60 ^A4
59 ^V_CC
58 ^A5
57 ^A6
56 ^GND
55 ^A7
54 ^A8
53 ^V_CC
52 ^A9
51 ^A10
50 ^GND
49 ^CLK
48 ^LE
47 ^GND
46 ^A11
45 ^A12
44 ^V_CC
43 ^A13
42 ^A14
41 ^GND
40 ^A15
39 ^A16
38 ^V_CC
37 ^A17
36 A18
35 GND
34 A19
33 A20
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 is a trademark of 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.
Copyright © 1998, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1