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TMS4256-12FMS Datasheet

		TA= -400C			TA= OoC			TA= +250C			TA= +850C
Symbol	Characteristic	Min	Typ	Max	Mn	Typ	Max	Min	Typ	Max	Min	Typ	Max	Unit
fMAX	Max. Toggle Frequency	1000	1400		1100	1400		1100	1400		1100	1400		MHz
tPLH tPHL	Propagation Delay to Output CE cc R S	415 275 445 533		618 725 693 744	425 325 454 543		614 675 684 746	432 325 460 550		604 675 673 636	452 325 477 571		581 675 650 715	ps ps ps ps
ts	Setup¨me D	200	20		150	20		150	20		150	20		ps
tH	Hold¨me D	225	-20		175	-20		175	-20		175	-20		ps
tRR	Reset Recovery Time	450	150		400	150		400	150		400	150		ps
tPW	Minimum Pulse Width CLK R, S	400 400			400 400			400 400			400 400			ps ps
tSKEW	Within Device Skew3		60			60			60			60		ps
trtf	Rise/Fall Times 10E 100E	217 369		325 590	222 345		340 575	225 317		345 525	230 253		365 407	ps ps

TMS4256-12FMS Price

Test conditions assume signal transition time of 5 ns or less timing reference levels of l.5V, input pulse levels of O t0 3.OV, and output loading of the specified IOL/IOH and 100-pF load capacitance. At any given temperature and voltage condition, tHZCE iS less than tLZCE, tHZOE iS less than ti_ZOE, and tHZWE iS less than tl_ZWE for any given device. tHZOE, tHZCE, and tHZWE are specifIed with CL = 5 pF as in part (b) ofAC Test Loads. Transition is measured +200 mV from steady-state voltage. The internal write time of the memory is defined by the overlap of CEi LOW, CE2 HIGH, and WE LOW. CEi and WE signals must be LOW and CE2 HIGH to initiate a write and either signal can terminate a write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge ofthe signalthat terminates the write The minimum write cycle time for write cycle #3 (WE controlled, OE LOW) is the sum oftHZWE and tSD
TMS4256-12FMS on stock

Hitachi Code	T0-92 (1)
lJEDEC	Conforms
lEIAJ	Conforms
Weight (reference value)	0.25 a

COMMAND IN+, COMMAND IN- , COMMAND GROUND, COMMAND OUT These are the connection pins for the command amplifier. The command amplifier has a differential input that operates from a +4Vdc full-scale analog current command. The command ampli- fier output signal is internally limited to approximately +5Vdc to prevent the amplifier from saturating. The input impedance of the command amplifier is 50KQ.

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