No Output Latch-Up at 20 V (After
Conducting 300 mA)
D
High-Speed Switching
D
Circuit Flexibility for Varied Applications
D
TTL-Compatible Diode-Clamped Inputs
D
Standard Supply Voltages
D
Plastic DIP (P) With Copper Lead Frame
Provides Cooler Operation and Improved
Reliability
D
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
SUMMARY OF DEVICES
DEVICE
SN55451BANDFK, JG
SN55452BNANDJG
SN55453BORFK, JG
SN55454BNORJG
SN75451BANDD, P
SN75452BNANDD, P
SN75453BORD, P
SN75454BNORD, P
LOGIC OF
COMPLETE CIRCUIT
PACKAGES
SN55451B, SN55452B,
SN55453B, SN55454B . . . JG PACKAGE
SN75451B, SN75452B,
SN75453B, SN75454B ...D OR P PACKAGE
(TOP VIEW)
NC
8
7
6
5
CC
V
2Y
18
17
16
15
14
V
2B
2A
2Y
CC
NC
2B
NC
2A
NC
1A
1
1B
2
1Y
3
GND
SN55453B, SN55454B . . . FK PACKAGE
NC
1B
NC
1Y
NC
NC – No internal connection
4
SN55451B, SN55452B
(TOP VIEW)
NC1ANCNCNC
3 2 1 20 19
4
5
6
7
8
910111213
NC
GND
description
The SN55451B through SN55454B and SN75451B through SN75454B are dual peripheral drivers designed
for use in systems that employ TTL logic. This family is functionally interchangeable with and replaces the
SN75450 family and the SN75450A family devices manufactured previously . The speed of the devices is equal
to that of the SN75450 family, and the parts are designed to ensure freedom from latch-up. Diode-clamped
inputs simplify circuit design. Typical applications include high-speed logic buf fers, power drivers, relay drivers,
lamp drivers, MOS drivers, line drivers, and memory drivers.
The SN55451B/SN75451B, SN55452B/SN75452B, SN55453B/SN75453B, and SN55454B/SN75454B are
dual peripheral AND, NAND, OR, and NOR drivers, respectively (assuming positive logic), with the output of
the logic gates internally connected to the bases of the npn output transistors.
The SN55’ drivers are characterized for operation over the full military range of –55°C to 125°C. The SN75’
drivers are characterized for operation from 0°C to 70°C.
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.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
SN55’SN75’UNIT
Supply voltage, VCC (see Note 1)77V
Input voltage, V
Inter-emitter voltage (see Note 2)5.55.5V
Off-state output voltage, V
Continuous collector or output current, IOK (see Note 3)400400mA
Peak collector or output current, II (tw ≤ 10 ms, duty cycle ≤ 50%, see Note 4)500500mA
Continuous total power dissipationSee Dissipation Rating Table
Operating free-air temperature range, T
Storage temperature range, T
Case temperature for 60 secondsFK package260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 secondsJG package300°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 secondsD or P package260°C
NOTES: 1. Voltage values are with respect to network GND, unless otherwise specified.
I
O
A
stg
2. This is the voltage between two emitters of a multiple-emitter transistor.
3. This value applies when the base-emitter resistance (RBE) is equal to or less than 500 Ω.
4. Both halves of these dual circuits may conduct rated current simultaneously; however , power dissipation averaged over a short time
interval must fall within the continuous dissipation rating.
5.55.5V
3030V
–55 to 1250 to 70°C
–65 to 150 –65 to 150°C
T
≤ 25°CDERATING FACTORT
POWER RATINGABOVE TA = 25°CAPOWER RATINGAPOWER RATING
VCE(sat) – Collector-Emitter Saturation Voltage – V
0
10
NOTE A: These parameters must be measured using pulse techniques,
tw = 300 µs, duty cycle ≤ 2%.
204070 100200
TA = 25°C
IC – Collector Current – mA
TA = 70°C
400
Figure 3
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICA TIONS USING SEMICONDUCTOR PRODUCTS MA Y INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1999, Texas Instruments Incorporated
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