TTL-Compatible Inputs CCD-Compatible Outputs Full-Frame Operation Fram

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TTL-Compatible Inputs CCD-Compatible Outputs Full-Frame Operation Fram

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SN28846 SERIAL DRIVER
TTL-Compatible Inputs CCD-Compatible Outputs Full-Frame Operation Frame-Transfer Operation Solid-State Reliability Adjustable Clock Levels
PACKAGE (TOP VIEW)
description
SN28846 serial driver monolithic CMOS integrated circuit designed drive serial register gate (SRGn) transfer gate (TRG) inputs Texas Instruments virtual-phase image sensors. SN28846 interfaces internal connection user-defined timing generator image sensor; receives signals from timing generator outputs level-shifted signals image sensor. SN28846 contains three noninverting serial-gate drivers noninverting transfer-gate driver. voltage levels outputs SRG1OUT, SRG2OUT, SRG3OUT, TRGOUT controlled levels supply inputs VCC. propagation delays these outputs controlled SEL0 SEL1 inputs. inputs SRG1IN, SRG2IN, SRG3IN, TRGIN compatible. high level input allows SN28846 operate normally with level-shifted outputs following inputs. When low, device low-power-consumption mode outputs VCC. SN28846 available surface-mount package characterized operation from -20°C 45°C.
SEL0OUT SRG3IN SRG2IN SRG1IN TRGIN SEL1OUT
SEL0 SRG3OUT SRG2OUT SRG1OUT TRGOUT SEL1
This device contains circuits protect inputs outputs against damage high static voltages electrostatic fields. These circuits have been qualified protect this device against electrostatic discharges (ESD) according MIL-STD-883C, Method 3015; however, precautions should taken avoid application voltage higher than maximum-rated voltages these high-impedance circuits. During storage handling, device leads should shorted together device should placed conductive foam. circuit, unused inputs should always connected appropriated logic voltage level, preferably either ground. Specific guidelines handling devices this type contained publication Guidelines Handling (ESDS) Devices Assemblies available from Texas Instruments.
Copyright 1991, Texas Instruments Incorporated
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
POST OFFICE 655303
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SN28846 SERIAL DRIVER
logic symbol
TTL/CCD SN28846
SEL0 SEL1 SRG1IN
SEL0 SEL1
SRG1IN
SRG1OUT
SRG1OUT
SRG2IN
SRG2IN
SRG2OUT
SRG2OUT
SRG3IN TRGIN
SRG3IN TRGIN
SRG3OUT TRGOUT
SRG3OUT TRGOUT
This symbol accordance with ANSI/IEEE 91-1984 Publication 617-12.
Terminal Functions
TERMINAL NAME SEL0 SEL1 SEL0OUT SEL1OUT SRG1IN SRG2IN SRG3IN SRG1OUT SRG2OUT SRG3OUT TRGIN TRGOUT Ground connect connect Power down Propagation delay mode select Propagation delay mode select Test (factory only) Test (factory only) Serial-register gate Serial-register gate Serial-register gate Serial-register gate Serial-register gate Serial-register gate Transfer gate Transfer gate Positive supply voltage Positive supply voltage Negative supply voltage Negative supply voltage DESCRIPTION
pins same name should connected together externally.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN28846 SERIAL DRIVER
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Positive supply voltage, (see Note Negative supply voltage, (see Note -11.1 Input voltage range: SEL0 SEL1 Other inputs Operating free-air temperature range, 30°C 75°C Storage temperature range 55°C 125°C Lead temperature (1/16 inch) from case seconds 260°C Continuous total power dissipation, 25°C: Without heat sink (see Figure package With heat sink (see Figure package 1150
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. NOTES: voltage values with respect terminal. algebraic convention, which least positive (most negative) value designated minimum, used this data sheet voltage levels only.
POWER DISSIPATION FREE-AIR TEMPERATURE
1500 1400 1300 Power Dissipation 1200 1100 1000 Free-Air Temperature Package Device Alone Mounted Device (see Note
Figure
NOTE mounted-device derating curve Figure obtained under following conditions: board thick. board material glass epoxy. copper thickness etch runs microns. Etch dimensions package etch runs were Each chip soldered board. aluminum cooling thick coupled chip with thermal paste.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN28846 SERIAL DRIVER
recommended operating conditions
Positive supply voltage, Negative supply voltage, (see Note SRG1IN, SRG2IN, SRG3IN, TRGIN High-level voltage, High input SEL0, SEL1 SRG1IN, SRG2IN, SRG3IN, TRGIN Low-level input voltage, SEL0, SEL1 Output load Operating free-air temperature, SRG1OUT, SRG2OUT, SRG3OUT TRGOUT -11.1 -10.4 -9.7 UNIT
NOTE algebraic convention, which least positive (most negative) value designated minimum, used this data sheet voltage levels only.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER SRG1OUT, SRG2OUT, SRG3OUT TRGOUT SRG1OUT, SRG2OUT, SRG3OUT TRGOUT Peak-to-peak output noise voltage High-level input current Low-level input current Supply current Maximum frequency operation SRG1OUT, SRG2OUT, SRG3OUT TRGOUT SRG1OUT, SRG2OUT, SRG3OUT SRG1IN, SRG2IN, SRG3IN, TRGIN, SEL0, SEL1 TEST CONDITIONS MHz, Figure MHz, Figure MHz, Figure MHz, Figure Figure Input Input Input Input VSS+0 +0.8 VCC+0 +0.5 UNIT
High-level output voltage
Low-level output voltage
load, 25°C Note
fmax
NOTE SRG1OUT, SRG2OUT, SRG3OUT loaded with 80-pF capacitive loads; TRGOUT loaded with 180-pF load. SN28846 driver clocked SN28835 timer. SEL0 SEL1 both held -11.1
POST OFFICE 655303
DALLAS, TEXAS 75265
SN28846 SERIAL DRIVER
switching characteristics SRG1OUT, SRG2OUT, SRG3OUT, -10.3 25°C (unless otherwise noted) (see Figure
PARAMETER SELECT MODE tPLH Propagation delay time, low-to-high-level output tPHL tPLH tPHL tsk(o) Propagation delay time, high-to-low-level output (see Note (see Note Skew time (see Note Pulse duration tw(n) tw(m) Pulse duration differential (see Note Input Input 20°C 55°C Input Input TEST CONDITIONS UNIT
Rise time Input Fall time load Texas Instruments image sensor. select mode determined voltage levels applied SEL1 SEL0 inputs follows: SELECT MODE SEL1 SEL0 NOTES: given channel, tPLH tPHL changes tPLH tPHL, respectively, when device operated over temperature range 20°C 55°C rather than 25°C. This maximum absolute difference propagation delay time, either tPLH tPHL, through three channels given temperature within specified range. This maximum difference pulse duration through three channels.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN28846 SERIAL DRIVER
switching characteristics TRGOUT, -10.3 25°C (unless otherwise noted) (see Figure
PARAMETER SELECT MODE tPLH Propagation delay time, low-to-high-level output tPHL tPLH tPHL Propagation delay time, high-to-low-level output (see Note (see Note Pulse duration 20°C 55°C TEST CONDITIONS UNIT
Rise time Fall time load Texas Instruments image sensor. select mode determined voltage levels applied SEL1 SEL0 follows: SELECT MODE SEL1 SEL0 NOTE tPLH tPHL changes tPLH tPHL, respectively, when device operated over temperature range 20°C 55°C rather than 25°C.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN28846 SERIAL DRIVER
PARAMETER MEASUREMENT INFORMATION
SRG1IN, SRG2IN, SRG3IN, TRGIN
SRG1OUT, SRG2OUT, SRG3OUT, TRGOUT tPLH
tPHL PROPAGATION DELAYS
SRG1OUT, SRG2OUT, SRG3OUT, TRGOUT
100%
PULSE DURATION RISE FALL TIMES
SRG1OUT, SRG2OUT, SRG3OUT
SRG1OUT, SRG2OUT, SRG3OUT
(typical) 0.15 0.15
SRG1OUT, SRG2OUT, SRG3OUT
SRG1OUT, SRG2OUT, SRG3OUT
(worst case) TYPICAL WORST-CASE OUTPUT WAVEFORM NOISE (see Note
0.15 0.15
From Output Under Test
NOTE Includes probe capacitance.
Figure Voltage Waveforms
POST OFFICE 655303
DALLAS, TEXAS 75265
SN28846 SERIAL DRIVER
MECHANICAL DATA
DW/R-PDSO-G**
SHOWN
PLASTIC WIDE-BODY SMALL-OUTLINE PACKAGE
PINS** 0.400 (10,16) 0.410 (10,41) 0.500 (12,70) 0.510 (12,95) 0.600 (15,24) 0.610 (15,49) 0.700 (17,78) 0.710 (18,03)
0.419 (10,65) 0.400 (10,15) 0.299 (7,59) 0.293 (7,45)
0.104 (2,65) 0.093 (2,35)
Seating Plane 0.004 (0,10)
0.364 (9,24) 0.338 (8,58)
0.012 (0,30) 0.004 (0,10)
0.020 (0,51) 0.014 (0,35) 0.010 (0,25)
0.012 (0,30) 0.009 (0,23)
0.050 (1,27) 0.016 (0,40)
0.050 (1,27)
4040000/A-10/93 NOTES: linear dimensions inches (millimeters). This drawing subject change without notice. Body dimensions include mold flash protrusion exceed 0.006 (0,15).
POST OFFICE 655303
DALLAS, TEXAS 75265
IMPORTANT NOTICE Texas Instruments (TI) reserves right make changes products discontinue semiconductor product service without notice, advises customers obtain latest version relevant information verify, before placing orders, that information being relied current. warrants performance semiconductor products related software specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques utilized extent deems necessary support this warranty. Specific testing parameters each device necessarily performed, except those mandated government requirements. Certain applications using semiconductor products involve potential risks death, personal injury, severe property environmental damage ("Critical Applications"). SEMICONDUCTOR PRODUCTS DESIGNED, INTENDED, AUTHORIZED, WARRANTED SUITABLE LIFE-SUPPORT APPLICATIONS, DEVICES SYSTEMS OTHER CRITICAL APPLICATIONS. Inclusion products such applications understood fully risk customer. products such applications requires written approval appropriate officer. Questions concerning potential risk applications should directed through local sales office. order minimize risks associated with customer's applications, adequate design operating safeguards should provided customer minimize inherent procedural hazards. assumes liability applications assistance, customer product design, software performance, infringement patents services described herein. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right covering relating combination, machine, process which such semiconductor products services might used.
Copyright 1995, Texas Instruments Incorporated

TTL-Compatible Inputs CCD-Compatible Outputs Full-Frame Operation Fram

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