SN10KHT5540 Datasheet, PDF (1/6 Pages) Texas Instruments – OCTAL ECL-TO-TTL TRANSLATOR WITH 3-STATE OUTPUTS

• 10KH Compatible
• ECL and TTL Control Inputs
• Inverting Outputs
• Flow-Through Architecture Optimizes PCB
Layout
• Center Pin V_CC, V_EE, and GND
Configurations Minimize High-Speed
Switching Noise
• Package Options Include “Small Outline”
Packages and Standard Plastic 300-mil
DIPs
description
This octal ECL-to-TTL translator is designed to
provide a efficient translation between a 10KH
ECL signal environment and a TTL signal
environment. This device is designed specifically
to improve the performance and density of
ECL-to-TTL CPU/bus-oriented functions such as
memory-address drivers, clock drivers, and
bus-oriented receivers and transmitters.
Two output enable pins, OE1 and OE2, are
provided. These control inputs are ANDed
together with OE1 being ECL compatible and OE2
being TTL compatible. This offers the choice of
controlling the outputs of the device from either a
TTL or ECL signal environment.
The SN10KHT5540 is characterized for operation
from 0°C to 75°C.
FUNCTION TABLE
OUTPUT
ENABLE
OE1 OE2
X
H
H
X
L
L
L
L
DATA
INPUT
A
X
X
L
H
OUTPUT
(TTL)
Y
Z
Z
H
L
SN10KHT5540
OCTAL ECLĆTOĆTTL TRANSLATOR
WITH 3ĆSTATE OUTPUTS
SDZS006 − DECEMBER 1990
DW OR NT PACKAGE
(T0P VIEW)
Y1 ₁
Y2 ₂
Y3 ₃
Y4 ₄
V_{CC 5}
GND ₆
GND 7
GND 8
Y5 9
Y6 10
Y7 11
Y8 12
24 ^A1
23 ^A2
22 ^A3
21 ^A4
20 ^{OE2 (TTL)}
19 ^V_EE
18 GND
17 OE1 (ECL)
16 A5
15 A6
14 A7
13 A8
logic symbol^†
OE1 ¹⁷
OE2 ²⁰
ECL/TTL ^&
EN
A1 ²⁴
A2 ²³
A3 ²²
A4 ²¹
16
A5
15
A6
14
A7
A8 ¹³
ECL/TTL
1 _Y1
2 _Y2
3 _Y3
4 _Y4
9
Y5
10
Y6
11
Y7
12 _Y8
† _{This symbol is in accordance with ANSI/IEEE STD 91-1984}
and IEC Publication 617-12.
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  1990, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443