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Standardy napięciowe - przykłady

Figurę 46 Terminated SSTL3 Class I

LVTTL

LVTTL requires no termination. DC voltage specifications appears inTable31.

Table 24 SSTL3 I Voltage Specifications

Pararneter	Min	Typ	Max
Vcco	3.0	3.3	3.6
^vREF ^= 0-^45x VCCO	1.3	1.5	i
Vn = VREF	1.3	1.5	1.7
V|H2Vref + 0.2	1.5	1.7	3.9(D
V|L<Vref-0.2	-0.3®	1.3	1.5
VOH^Vref + 0.6	1.9
^VOL^sVREF-°-^6			1.1
l0H atV0H (mA)	-8
Iql at Vql (mA)	8

Notes:

1.    V|_H maximum is V_cco + 0.3.

2.    V|_L minimum does not conform to the formula.

Table 31 LVTTL Voltage Specifications

Pararneter	Min	Typ	Max
^vcco	3.0	3.3	3.6
Vref
Vtt
V|R	2.0		3.6
V|L	-0.5		0.8
V0H	2.4
^VOL			0.4
loH ^a^OH (mA)	-24
l0L at VOL (mA)	24

Notes:

1. V_0L and V_OH for lower drive currents sample tested.