SN54ALS880A, SN54AS880, SN74ALS880A, SN74AS880 DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986 • • • • • 3-State Buffer-Type Outputs Drive Bus Lines Directly Bus-Structured Pinout ’ALS873B is Alternative Version With Noninverting Outputs Package Options Include Plastic Small Outline Packages, Both Plastic and Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs Dependable Texas Instruments Quality and Reliability SN54ALS880A, SN54AS880 . . . JT PACKAGE SN74ALS880A, SN74AS880 . . . DW OR NT PACKAGE (TOP VIEW) 1PRE 1OC 1D1 1D2 1D3 1D4 2D1 2D2 2D3 2D4 2OC GND description The SN54ALS880A and SN54AS880 are characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74ALS880A and SN74AS880 are characterized for operation from 0°C to 70°C. 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 VCC 1C 1Q1 1Q2 1Q3 1Q4 2Q1 2Q2 2Q3 2Q4 2C 2PRE SN54ALS880A, SN54AS880 . . . JT PACKAGE SN74ALS880A, SN74AS880 . . . DW OR NT PACKAGE (TOP VIEW) 1D1 1OC 1PRE NC VCC 1C 1Q1 The dual 4-bit latches are transparent D-type. When the latch enable input (1C or 2C) is high, the Q outputs will follow the data (D) inputs in inverted form, according to the function table. When the latch enable input is taken low, the outputs will be latched. When PRE goes low, the Q outputs go low independently of the clock. The outputs are in a high-impedance state when OC (output control) is at a high logic level. 24 2 1D2 1D3 1D4 NC 2D1 2D2 2D3 4 5 3 2 1 28 27 26 25 6 24 7 23 8 22 9 21 10 20 11 19 12 13 14 15 16 17 18 1Q2 1Q3 1Q4 NC 2Q1 2Q2 2Q3 2D4 2OC GND NC 2PRE 2C 2Q4 These dual 4-bit registers feature 3-state outputs designed specifically for bus driving. This makes these devices particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. 1 NC – No internal connection FUNCTION TABLE (each latch) OUTPUT INPUTS OC PRE C D Q L L X X L L H H H L L H H L H L H L X Q0 H X X X Z Copyright 1986, 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54ALS880A, SN54AS880, SN74ALS880A, SN74AS880 DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986 logic symbol† 2 1OC 23 1C 1 1PRE 3 1D1 4 1D2 5 1D3 6 1D4 11 2OC 14 2C 13 2PRE 7 2D1 8 2D2 9 2D3 10 2D4 EN C1 S 22 21 20 19 1D 1Q1 1Q2 1Q3 1Q4 EN C1 S 18 17 16 15 1D 2Q1 2Q2 2Q3 2Q4 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for DW, JT, and NT packages. logic diagram (each quad latch, positive logic) OC C PRE S C1 1D D1 Q1 S C1 1D D2 Q2 S C1 1D D3 Q3 S C1 1D D4 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Q4 SN54ALS880A, SN54AS880, SN74ALS880A, SN74AS880 DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range: SN54ALS880A, SN54AS880 . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74ALS880A, SN74AS880 . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C recommended operating conditions SN54ALS880A SN74ALS880A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IOH Low-level input voltage 0.7 0.8 High-level output current –1 – 2.6 mA IOL Low-level output current 12 24 mA High-level input voltage 2 2 PRE low 15 15 C high 15 15 tw Pulse duration tsu th Setup time, data before C↓ 10 10 Hold time, data after C↓ 10 10 TA Operating free-air temperature – 55 125 V V V ns ns ns 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = – 18 mA IOH = – 0.4 mA VCC = 4.5 V, VCC = 4.5 V, IOH = – 1 mA IOH = – 2.6 mA VOL VCC = 4.5 V, VCC = 4.5 V, IOL = 12 mA IOL = 24 mA IOZH IOZL VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL IO‡ VCC = 5.5 V, VCC = 5.5 V, VI = 0.4 V VO = 2.25 V VOH ICC VCC = 5.5 V SN54ALS880A TYP† MAX MIN SN74ALS880A TYP† MAX MIN – 1.2 VCC – 2 2.4 – 1.2 UNIT V VCC – 2 3.3 V 2.4 0.25 – 30 0.4 3.2 0.25 0.4 0.35 0.5 V µA 20 20 – 20 – 20 µA 0.1 0.1 mA 20 20 µA – 0.2 – 0.2 mA – 112 mA – 112 – 30 Outputs high 14 21 14 21 Outputs low 19 29 19 29 mA Outputs disabled 20 31 20 31 † All typical values are at VCC = 5 V, TA = 25°C. ‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54ALS880A, SN74ALS880A DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986 switching characteristics (see Note 1) PARAMETER VCC = 5 V, CL = 50 pF, VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R1 = 500 Ω, R2 = 500 Ω, FROM TO R2 = 500 Ω, (INPUT) (OUTPUT) TA = 25°C ’ALS880A MIN tPLH tPHL D Q tPLH tPHL C Q PRE Q tPHL tPZH tPZL tPHZ OC Q OC Q tPLZ NOTE 1: Load circuit and voltage waveforms are shown in Section 1. 4 POST OFFICE BOX 655303 TYP TA = MIN to MAX SN54ALS880A SN74ALS880A MIN MAX MIN MAX 14 MAX 19 3 23 3 20 9 12 3 15 3 14 17 22 8 31 8 24 14 18 8 22 8 21 12 16 6 24 6 21 12 15 4 21 4 18 13 17 4 21 4 18 6 9 2 12 2 10 8 11 3 21 3 17 • DALLAS, TEXAS 75265 UNIT ns ns ns ns ns SN54AS880, SN74AS880 DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986 recommended operating conditions SN54AS880 VCC VIH Supply voltage VIL IOH Low-level input voltage IOL Low-level output current SN74AS880 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 High-level input voltage 2 2 High-level output current V 0.8 V – 12 – 15 mA 48 mA 4.5 3.5 4 2.5 tw Pulse duration tsu th Setup time, data before C↓ 2 2 Hold time, data after C↓ 1 1 TA Operating free-air temperature C high – 55 V 0.8 32 PRE low UNIT 125 ns ns ns 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = – 18 mA IOH = – 2 mA VCC = 4.5 V, VCC = 4.5 V, IOH = – 12 mA IOH = – 15 mA VOL VCC = 4.5 V, VCC = 4.5 V, IOL = 32 mA IOL = 48 mA IOZH IOZL VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL IO‡ VCC = 5.5 V, VCC = 5.5 V, VI = 0.4 V VO = 2.25 V VOH ICC VCC = 5.5 V SN54AS880 MIN TYP† MAX SN74AS880 MIN TYP† MAX – 1.2 VCC – 2 2.4 – 1.2 UNIT V VCC – 2 3.2 V 2.4 0.30 3.3 0.5 0.35 – 30 0.5 V µA 50 50 – 50 – 50 µA 0.1 0.1 mA 20 20 µA – 0.5 – 0.5 mA – 112 mA – 112 – 30 Outputs high 73 118 73 118 Outputs low 76 122 76 122 Outputs disabled 86 137 86 137 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN54AS880, SN74AS880 DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986 switching characteristics (see Note 1) VCC = 4.5 V to 5.5 V, CL = 50 pF, PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL D Q tPLH tPHL C Q PRE Q tPHL tPZH tPZL tPHZ OC Q OC Q tPLZ NOTE 1: Load circuit and voltage waveforms are shown in Section 1. 6 POST OFFICE BOX 655303 R1 = 500 Ω R2 = 500 Ω UNIT TA = MIN to MAX SN54AS880 SN74AS880 MIN MAX MIN MAX 4 11 4 9.5 4 9 4 8.5 6 14 6 11.5 4 10 4 8 4 11.5 4 10 2 8 2 7.5 4 11 4 10 2 8 2 6.5 2 9 2 8 • DALLAS, TEXAS 75265 ns ns ns ns ns