MIL-M-38510-210 Microcircuit, Digital, 16,384 Bit Schottky, Bipolar, Programmable Read-Only Memory Prom Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, programmable read-only memory PROM microcircuits which employ thin film nichrome NiCr resistors, platinum-silicide, tungsten W, titanium-tungsten TiW or zapped vertical emitter as the fusible link or programming element. Two product assurance classes and a choice of case outlines and lead finishes are provided and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.

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MIL-M-38510/210F

TABLE IVC. Programming characteristics for circuit C, device types 02 and 04; circuit K, device type 02.

Parameter	Symbol	Conditions 1/	Limits			Unit
Parameter	Symbol	Conditions 1/	Min	Recommended	Max	Unit
Programming voltage to VCC	VCCP 2/	ICCP = 375 ±75 mA Transient or steady-state	8.5	8.75	9.0	V
Verificaiton upper limit	VCCH		5.3	5.5	5.7	V
Verificaiton lower limit	VCCL		4.3	4.5	4.7	V
Verify threshold	VS 3/		1.4	1.5	1.6	V
Programming supply current	ICCP	VCCP = +8.75 ±0.25 V	300		450	mA
Input voltage, high level "1"	VIH		2.4		5.5	V
Input voltage, low level "O"	VIL		0	0.4	0.8	V
Input current	IIH	VIH = +5.5 V			50	µA
Input current	IIL	VIL = +0.4 V			-500	µA
Output programming voltage	VOUT 4/	IOUT = 200 ±20 mA; Transient or steady-state	16	17	18	V
Output programming current	IOUT	VOUT = 17 V ±1 V	180	200	220	mA
Programming voltage transition time	tTLH		10		50	µs
CE programming pulse width	tP		300	400	500	µs
Pulse sequence delay	tD		10			µs

1/ TC = +25°C.

2/ Bypass VCC to GND with a 0.01 µF capacitor to reduce voltage spikes.

3/ VS is the sensing threshold of the PROM output voltage for a programmed bit. It normally constitutes the reference voltage applied to a comparator circuit to verify a successful fusing attempt.

4/ Care should be taken to insure the 17 V ±1 V output voltage is maintained during the entire fusing cycle. The recommended supply is a constant current source clamped at the specified voltage limit.