MIL-M-38510-328 Microcircuits, Digital, Bipolar, Low-Power Schottky Ttl, Bus Transceivers With Three State Outputs, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, low-power Schottky TTL, bus transceivers with three state outputs. Two product assurance classes and a choice of case outlines and lead finishes are provided for each type 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 For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.3.

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MIL-M-38510/328C

Device type 01 Device type 02

CONTROL INPUTS		DATA PORT STATUS
GAB	GBA	A	B
H	H	O	I
L	H	*	*
H	L	ISOLATED
L	L	I	O

* Possibly destructive oscillation may occur if the * Possibly destructive oscillation may occur if the transceivers are enabled in both directions at once. transceivers are enabled in both directions at once.

I = Input, O = Output, O = Inverting Output I = Input, O = Output, O = Inverting Output

Device type 03

ENABLE G	DIRECTION CONTROL DIR	OPERATION
L	L	B data to A bus
L	H	A data to B bus
H	x	Isolation

H = high level, L = low level, x = irrelevant

FIGURE 2. Truth tables.