Product details

Number of channels 4 Technology family LS Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Input type Bipolar Output type TTL Clock frequency (max) (MHz) 35 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Supply current (max) (µA) 46000 Features Very high speed (tpd 5-10ns) Operating temperature range (°C) -55 to 125 Rating Military
Number of channels 4 Technology family LS Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Input type Bipolar Output type TTL Clock frequency (max) (MHz) 35 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Supply current (max) (µA) 46000 Features Very high speed (tpd 5-10ns) Operating temperature range (°C) -55 to 125 Rating Military
CDIP (J) 16 135.3552 mm² 19.56 x 6.92 CFP (W) 16 69.319 mm² 10.3 x 6.73

These latches are ideally suited for use as temporary storage for binary information between processing units and input/output or indicator units. Information present at a data (D) input is transferred to the Q output when the enable (C) is high and the Q output will follow the data input as long as the enable remains high. When the enable goes low, the information (that was present at the data input at the time the transition occurred) is retained at the Q output until the enable is permitted to go high.

The '75 and 'LS75 feature complementary Q and Q\ outputs from a 4-bit latch, and are available in various 16-pin packages. For higher component density applications, the '77 and 'LS77 4-bit latches are available in 14-pin flat packages.

These circuits are completely compatible with all popular TTL families. All inputs are diode-clamped to minimize transmission-line effects and simplify system design. Series 54 and 54LS devices are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74, and 74LS devices are characterized for operation from 0°C to 70°C.

 

These latches are ideally suited for use as temporary storage for binary information between processing units and input/output or indicator units. Information present at a data (D) input is transferred to the Q output when the enable (C) is high and the Q output will follow the data input as long as the enable remains high. When the enable goes low, the information (that was present at the data input at the time the transition occurred) is retained at the Q output until the enable is permitted to go high.

The '75 and 'LS75 feature complementary Q and Q\ outputs from a 4-bit latch, and are available in various 16-pin packages. For higher component density applications, the '77 and 'LS77 4-bit latches are available in 14-pin flat packages.

These circuits are completely compatible with all popular TTL families. All inputs are diode-clamped to minimize transmission-line effects and simplify system design. Series 54 and 54LS devices are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74, and 74LS devices are characterized for operation from 0°C to 70°C.

 

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Technical documentation

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Type Title Date
* Data sheet 4-Bit Bistable Latches datasheet 01 Mar 1988
* SMD SN54LS75 SMD 7601201EA 21 Jun 2016
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 15 Dec 2022
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Designing with the SN54/74LS123 (Rev. A) 01 Mar 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996

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CDIP (J) 16 Ultra Librarian
CFP (W) 16 Ultra Librarian

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