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SNJ54GTL16612WD Datasheet(PDF) 7 Page - Texas Instruments |
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SNJ54GTL16612WD Datasheet(HTML) 7 Page - Texas Instruments |
7 / 13 page www.ti.com Timing Requirements Switching Characteristics SN54GTL16612, SN74GTL16612 18-BIT LVTTL-TO-GTL/GTL+ UNIVERSAL BUS TRANSCEIVERS SCBS480K – JUNE 1994 – REVISED JULY 2005 over recommended ranges of supply voltage and operating free-air temperature, V TT = 1.5 V and VREF = 1 V for GTL+ (unless otherwise noted) (see Figure 1) SN54GTL16612 SN74GTL16612 UNIT MIN MAX MIN MAX fclock Clock frequency 95 95 MHz LEAB or LEBA high 3.3 3.3 tw Pulse duration ns CLKAB or CLKBA high or low 5.6 5.6 A before CLKAB ↑ 1.3 1.3 B before CLKBA ↑ 3.2 2.3 A before LEAB ↓ 1.2 0 tsu Setup time ns B before LEBA ↓ 1.3 1.3 CEAB before CLKAB ↑ 2.1 2 CEBA before CLKBA ↑ 2.6 2.2 A after CLKAB ↑ 2.9 1.6 B after CLKBA ↑ 4.4 0.3 A after LEAB ↓ 4.5 4 th Hold time ns B after LEBA ↓ 4.3 3.6 CEAB after CLKAB ↑ 2 0.8 CEBA after CLKBA ↑ 1.1 1.1 over recommended ranges of supply voltage and operating free-air temperature, V TT = 1.5 V and VREF = 1 V for GTL+ (see Figure 1) SN54GTL16612 SN74GTL16612 FROM TO PARAMETER UNIT (INPUT) (OUTPUT) MIN TYP(1) MAX MIN TYP(1) MAX fmax 95 95 MHz tPLH 1 2.8 4.5 1.5 2.8 4.1 A B ns tPHL 1 2.5 4.6 1.3 2.5 4.1 tPLH 1 3.6 5.5 2 3.6 5.3 LEAB B ns tPHL 1 3.5 6.1 1.9 3.5 5.5 tPLH 1 3.7 5.5 2.3 3.7 5.3 CLKAB B ns tPHL 1 3.4 5.6 1.9 3.4 5.5 tPLH 1 3.4 5.5 2 3.4 5.1 OEAB B ns tPHL 1 3.3 5.6 2 3.3 5.6 tr Transition time, B outputs (0.5 V to 1 V) 1.5 1.5 ns tf Transition time, B outputs (1 V to 0.5 V) 0.8 0.8 ns tPLH 1.9 4 6.9 2 4 6.3 B A ns tPHL 0.9 2.8 4.9 1.1 2.8 4.4 tPLH 2 3.7 6.1 2.3 3.7 5.7 LEBA A ns tPHL 1 3 5.1 1.8 3 4.8 tPLH 2 3.8 6.4 2.5 3.8 6.1 CLKBA A ns tPHL 2 3.3 5.6 2.3 3.3 5.2 ten 1 5 7.5 2.3 5 7.4 OEBA A ns tdis 2 4.3 6.9 2.5 4.3 6.4 (1) All typical values are at VCC (3.3 V) = 3.3 V, VCC (5 V) = 5 V, TA = 25°C. 7 |
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